WO1993008693A1 - Novel coleopteran-active bacillus thuringiensis isolates and genes encoding coleopteran-active toxins - Google Patents

Novel coleopteran-active bacillus thuringiensis isolates and genes encoding coleopteran-active toxins Download PDF

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Publication number
WO1993008693A1
WO1993008693A1 PCT/US1992/009510 US9209510W WO9308693A1 WO 1993008693 A1 WO1993008693 A1 WO 1993008693A1 US 9209510 W US9209510 W US 9209510W WO 9308693 A1 WO9308693 A1 WO 9308693A1
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Prior art keywords
toxin
leu
amino acid
seq
acid sequence
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PCT/US1992/009510
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French (fr)
Inventor
Jewel M. Payne
Jenny M. Fu
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Mycogen Corporation
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Priority to AT92925087T priority Critical patent/ATE206283T1/en
Priority to EP92925087A priority patent/EP0612218B1/en
Priority to BR9206716A priority patent/BR9206716A/en
Priority to JP5508716A priority patent/JPH07501323A/en
Priority to DK92925087T priority patent/DK0612218T3/en
Priority to AU31278/93A priority patent/AU666692B2/en
Priority to DE69232098T priority patent/DE69232098T2/en
Publication of WO1993008693A1 publication Critical patent/WO1993008693A1/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/195Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
    • C07K14/32Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Bacillus (G)
    • C07K14/325Bacillus thuringiensis crystal protein (delta-endotoxin)
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N63/00Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • A01N63/50Isolated enzymes; Isolated proteins
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor
    • C12N1/205Bacterial isolates
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12RINDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00Microorganisms ; Processes using microorganisms
    • C12R2001/01Bacteria or Actinomycetales ; using bacteria or Actinomycetales
    • C12R2001/07Bacillus
    • C12R2001/075Bacillus thuringiensis
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S435/00Chemistry: molecular biology and microbiology
    • Y10S435/8215Microorganisms
    • Y10S435/822Microorganisms using bacteria or actinomycetales
    • Y10S435/832Bacillus

Definitions

  • the soil microbe Bacillus thuringiensis (B.t.) is a Gram-positive, spore-forming bacterium characterized by parasporal crystalline protein inclusions. These often appear microscopically as distinctively shaped crystals. The proteins are highly toxic to pests and specific in their activity.
  • Certain B.t. toxin genes have been isolated and sequenced, and recombinant DNA-based B.t.. products produced and approved.
  • new approaches for delivering B.t. endotoxins to agricultural environments are under development, including the use of plants genetically engineered with endotoxin genes for insect resistance and the use of stabilized intact microbial cells as B.t.. endotoxin delivery vehicles (Gaertner, F.H., L. Kim [1988] TIBTECH 6:S4-S7).
  • isolated B.t. endotoxin genes are becoming commercially valuable.
  • Bacillus thuringiensis produces a proteinaceous paraspore or crystal which is toxic upon ingestion by a susceptible insect host.
  • B.t. pesticides Over most of the past 30 years, commercial use of B.t. pesticides has been largely restricted to a narrow range of lepidopteran (caterpillar) pests. Preparations of the spores and crystals of B. thuringiensis subsp. kurstaki have been used for many years as commercial insecticides for lepidopteran pests. For example, B. thuringiensis var. kurstaki
  • HD-1 produces a crystal called a delta endotoxin which is toxic to the larvae of a number of lepidopteran insects.
  • B.t. pesticides with specificities for a much broader range of pests.
  • B.t. other species of B.t., namely israelensis and san diego (a.k.a. B.t. tenebrionis), have been used commercially to control insects of the orders Diptera and
  • Bacteria in Agroecosystems Developments in Industrial Microbiology 20:97-104. Krieg, A., AM. Huger, G.A. Langenbruch, W. Schnetter (1983) Z. ang. Ent. 96:500-508, describe a B.t. isolate named Bacillus thuringiensis var. tenebrionis, which is reportedly active against two beetles in the order Coleoptera. These are the Colorado potato beetle, Leptinotarsa decemlineata, and Agelastica alni.
  • Cryl Lepidoptera-specific
  • CryII Lepidoptera- and Diptera-specific
  • CryIII CryIII
  • the subject invention concerns the discovery that certain known and publicly available strains of Bacillus thuringiensis (B.t..) are active against coleopteran pests. This is a surprising discovery since these B.t. microbes were not known to have any insecticidal properties.
  • microbes of the subject invention wereobtained from the Howard Dalmage collection held by the NRRL culture repository in Peoria, Illinois and are designated B.t. HD511, B.t.. HD867, and B.t. HD1011. These microbes, and variants of these microbes, as well as genes and toxins obtainable therefrom, can be used to control coleopteran pests.
  • the procedures for using these microbes are similar to known procedures for using B.t. microbes to control coleopteran pests.
  • the subject invention also includes variants of B.t. microbes which have substantially the same pesticidal properties as the exemplified isolates. These variants would include, for example, mutants. Procedures for making mutants are well known in the microbiological art Ultraviolet light and nitrosoguanidine are used extensively toward this end. Further, the invention also includes the treatment of substantially intact B.t. cells, and recombinant cells containing a gene of the invention, to prolong the pesticidal activity when the substantially intact cells are applied to the environment of a target pest. Such treatment can be by chemical or physical means, or a combination of chemical or physical means, so long as the technique does not deleteriously affect the properties of the pesticide, nor diminish the cellular capability in protecting the pesticide. The treated cell acts as a protective coating for the pesticidal toxin. The toxin becomes available to act as such upon ingestion by a target insect.
  • nucleotide sequences encoding these toxins obtainable from the exemplified isolates.
  • nucleotide sequences can be used to transform other microbes or plants to create insecticidal compositions and plants.
  • SEQ ID NO. 1 is the nucleotide sequence encoding toxin HD511.
  • SEQ ID NO. 2 is the amino acid sequence of toxin HD511.
  • SEQ ID NO. 3 is the nucleotide sequence encoding toxin HD867.
  • SEQ ID NO. 4 is the amino acid sequence of toxin HD867.
  • nucleotide sequence information provided herein can be used to make primers which, when using standard PCR procedures, can be used to obtain the desirable genes from the disclosed isolates. These procedures are well known and commonly used in this art. Alternatively, synthetic genes, or portions thereof, can be made using a "gene machine" and the sequence information provided herein.
  • the subject invention pertains not only to the specific genes and toxins exemplified herein, but also to genes and toxins obtainable from variants of the disclosed isolates. These variants would have essentially the same coleopteran activity as the exemplified isolates.
  • DNA and amino acid sequence provided herein, a person skilled in the art could readily construct fragments or mutations of the genes and toxins disclosed herein. These fragments and mutations, which retain the coleopteran activity of the exemplified toxins, would be within the scope of the subject invention. Also, because of the redundancy of the genetic code, a variety of different DNA sequences can encode the amino acid sequences disclosed herein. It is well within the skill of a person trained in the art to create these alternative DNA sequences encoding the same, or similar, toxins. These DNA sequences are within the scope of the subject invention.
  • reference to "essentially the same" sequence refers to sequences which, have amino acid substitutions, deletions, additions, or insertions which do not materially affect coleopteran activity. Fragments retaining coleopteran activity are also included in this definition.
  • the coleopteran-active toxin genes of the subject invention can be isolated by known procedures and can be introduced into a wide variety of microbial hosts. Expression of the toxin gene results, directly or indirectly, in the intracellular production and maintenance of the pesticide. With suitable hosts, e.g., Pseudomonas, the microbes can be applied to the situs of coleopteran insects where they will proliferate and be ingested by the insects. The result is a control of the unwanted insects.
  • the microbe hosting the toxin gene can be treated under conditions that prolong the activity of the toxin produced in the cell. The treated cell then can be applied to the environment of target pest(s). The resulting product retains the toxicity of the B.t. toxin.
  • B.t. toxin gene is introduced via a suitable vector into a microbial host, and said host is applied to the environment in a living state, it is important that certain host microbes be used.
  • Microorganism hosts are selected which are known, to occupy the "phytosphere"
  • microorganisms are selected so as to be capable of successfully competing in the particular environment (crop and other insect habitats) with the wild-type microorganisms, provide for stable maintenance and expression of the gene expressing the polypeptide pesticide, and, desirably, provide for improved protection of the pesticide from environmental degradation and inactivation.
  • microorganisms are known to inhabit the phylloplane (the surface of the plant leaves) and/or the rhizosphere (the soil surrounding plant roots) of a wide variety of important crops. These microorganisms include bacteria, algae, and fungi.
  • microorgamsms suchi as bacteria, e.g., genera Pseudomonas, Erwinia, Serratia, Klebsiella, Xanthomonas, Streptomyces, Rhizobium, Rhodopseudomonas, Methylophilius, Agrobacterium, Acetobacter, Lactobacillus, Arthrobacter, Azotobacter, Leuconostoc, and Alcaligenes; fungi, particularly yeast, e.g., genera Saccharomyces, Cryptococcus, Kluyveromyces, Sporobolomyces, Rhodotorula, and Aureobasidium.
  • phytosphere bacterial species as Pseudomonas syringae, Pseudomonas fluorescens, Serratia marcescens, Acetobacter xylinum,
  • Agrobacterium tumefaciens Rhodopseudomonas spheroides, Xanthomonas campestris, Rhizobium melioti, Alcaligenes entrophus, and Azotobacter vinlandii; and phytosphere yeast species such as Rhodotorula rubra, R. glutinis, R. marina, R. aurantiaca, Cryptococcus albidus, C. diffluens, C. laurentii, Saccharomyces rosei, S. pretoriensis, S. cerevisiae, Sporobolomyces roseus, S. odorus, Kluyveromyces veronae, and Aureobasidium pollulans.
  • Rhodotorula rubra R. glutinis, R. marina, R. aurantiaca, Cryptococcus albidus, C. diffluens, C. laurentii, Saccharomyces rose
  • a wide variety of ways are available for introducing the B.t. gene expressing the toxin into the microorganism host under conditions which allow for stable maintenance and expression of the gene.
  • the transcriptional initiation signals will include a promoter and a transcriptional initiation start site.
  • it may be desirable to provide for regulative expression of the toxin where expression of the toxin will only occur after release into the environment This can be achieved with operators or a region binding to an activator or enhancers, which are capable of induction upon a change in the physical or chemical environment of the microorganisms.
  • a temperature sensitive regulatory region may be employed, where the organisms may be grown up in the laboratory without expression of a toxin, but upon release into the environment, expression begins.
  • Other techniques may employ a specific nutrient medium in the laboratory, which inhibits the expression of the toxin, where the nutrient medium in the environment allows for expression of the toxin.
  • a ribosomal binding site and an initiation codon will be present.
  • initiation and translational termination region will involve stop codon(s), a terminator region, and optionally, a polyadenylation signal.
  • the construct can involve the transcriptional regulatory region, if any, and the promoter, where the regulatory region may be either 5' or 3' of the promoter, the ribosomal binding site, the initiation codon, the structural gene having an open reading frame in phase with the initiation codon, the stop codon(s), the polyadenylation signal sequence, if any, and the terminator region.
  • This sequence as a double strand may be used by itself for transformation of a microorganism host, but will usually be included with a DNA sequence involving a marker, where the second D ⁇ A sequence may be joined to the toxin expression construct during introduction of the D ⁇ A into the host
  • a marker is intended a structural gene which provides for selection of those hosts which have been modified or transformed.
  • the marker will normally provide for selective advantage, for example, providing for biocide resistance, e.g., resistance to antibiotics or heavy metals; complementation, so as to provide prototropy to an auxotrophic host, or the like.
  • complementation is employed, so that the modified host may not only be selected, but may also be competitive in the field.
  • One or more markers may be employed in the development of the constructs, as well as for modifying the host
  • the organisms may be further modified by providing for a competitive advantage against other wild-type microorganisms in the field.
  • genes expressing metal chelating agents e.g., siderophores
  • genes expressing metal chelating agents may be introduced into the host along with the structural gene expressing the toxin.
  • the enhanced expression of a siderophore may provide for a competitive advantage for the toxin-producing host, so that it may effectively compete with the wild-type microorganisms and stably occupy a niche in the environment
  • a plasmid which has a replication system which is functional in the host
  • the replication system may be derived from the chromosome, an episomal element normally present in the host or a different host, or a replication system from a virus which is stable in the host
  • a large number of plasmids are available, such as pBR322, pACYC184, RSF1010, pR01614, and the like. See for example, Olson et aL (1982) J. Bacterial 150:6069, and Bagdasarian et aL (1981) Gene 16:237, and U.S. Patent ⁇ os.4,356,270, 4362,817, and 4,371,625.
  • the construct will also include a sequence of at least 50 basepairs (bp), preferably at least about 100 bp, and usually not more than about 1000 bp of a sequence homologous with a sequence in the host.
  • bp basepairs
  • the toxin gene will be in close proximity to the gene providing for complementation as well as the gene providing for the competitive advantage. Therefore, in the event that a toxin gene is lost, the resulting organism will be likely to also lose the complementing gene and/or the gene providing for the competitive advantage, so that it will be unable to compete in the environment with the gene retaining the intact construct.
  • transcriptional regulatory regions are available from a wide variety of microorganism hosts, such as bacteria, bacteriophage, cyanobacteria, algae, fungi, and the like.
  • Various transcriptional regulatory regions include the regions associated with the trp gene, lac gene, gal gene, the lambda left and right promoters, the tac promoter, and the naturally-occurring promoters associated with the toxin gene, where functional in the host. See for example, U.S. Patent Nos. 4,332,898, 4,342,832 and 4,356,270.
  • the termination region may be the termination region normally associated with the transcriptional initiation region or a different transcriptional initiation region, so long as the two regions are compatible and functional in the host.
  • the B.t. gene can be introduced between the transcriptional and translational initiation region and the transcriptional and translational termination region, so as to be under the regulatory control of the initiation region.
  • This construct can be included in a plasmid, which could include at least one replication system, but may include more than one, where one replication system is employed for cloning during the development of the plasmid and the second replication system is necessary for functioning in the ultimate host.
  • one or more markers may be present, which have been described previously.
  • the plasmid will desirably include a sequence homologous with the host genome.
  • the transformants can be isolated in accordance with conventional ways, usually employing a selection technique, which allows for selection of the desired organism as against unmodified organisms or transferring organisms, when present. The transformants then can be tested for pesticidal activity.
  • Suitable host cells where the pesticide-containing cells will be treated to prolong the activity of the toxin in the cell when the then treated cell is applied to the environment of target pest(s), may include either prokaryotes or eukaryotes, normally being limited to those cells which do not produce substances toxic to higher organisms, such as mammals. However, organisms which produce substances toxic to higher organisms could be used, where the toxin is unstable or the level of application sufficiently low as to avoid any possibility of toxicity to a mammalian host
  • prokaryotes As hosts, of particular interest will be the prokaryotes and the lower eukaryotes, such as fungi.
  • Illustrative prokaryotes both Gram-negative and -positive, include Enterobacteriaceae, such as
  • Rhizobium such as photobacterium, Zymomonas, Serratia, Aeromonas, Vibrio,
  • Desulfovibrio Spirillum; Lactobacillaceae; Pseudomonadaceae, such as Pseudomonas and
  • Acetobacter; Azotobacteraceae and Nitrobacteraceae are fungi, such as Phycomycetes and Ascomycetes, which includes yeast, such as Saccharomyces and
  • the cell will usually be intact and be substantially in the proliferative form when treated, rather than in a spore form, although in some instances spores may be employed.
  • Treatment of the microbial cell can be by chemical or physical means, or by a combination of chemical and/or physical means, so long as the technique does not deleteriously affect the properties of the toxin, nor diminish the cellular capability in protecting the toxin.
  • chemical reagents are halogenating agents, particularly halogens of atomic no. 17-80. More particularly, iodine can be used under mild conditions and for sufficient time to achieve the desired results.
  • aldehydes such as formaldehyde and glutaraldehyde
  • anti-infectives such as zephiran chloride and cetylpyridinium chloride
  • alcohols such as isopropyl and ethanol
  • histologic fixatives such as Bouin's fixative and Helly's fixative (See: Humason, Gretchen L.
  • Animal Tissue Techniques W.H. Freeman and Company
  • chemical agents that preserve and prolong the activity of the toxin produced in the cell when the cell is administered to the host animal.
  • physical means are short wavelength radiation such as gamma-radiation and X-radiation, freezing, UV irradiation, lyophilization, and the like.
  • the cells generally will have enhanced structural stability which will enhance resistance to environmental conditions.
  • the method of inactivation should be selected so as not to inhibit processing of the proform to the mature form of the pesticide by the target pest pathogen.
  • formaldehyde will crosslink proteins and could inhibit processing of the profo m of a polypeptide pesticide.
  • the method of inactivation or killing retains at least a substantial portion of the bio-availability or bioactivity of the toxin.
  • Characteristics of particular interest in selecting a host cell for purposes of production include ease of introducing the B.t. gene into the host, availability of expression systems, efficiency of expression, stability of the pesticide in the host, and the presence of auxiliary genetic capabilities.
  • Characteristics of interest for use as a pesticide microcapsule include protective qualities for the pesticide, such as thick cell walls, pigmentation, and intracellular packaging or formation of inclusion bodies; leaf affinity; lack of mammalian toxicity, attractiveness to pests for ingestion; ease of killing and fixing without damage to the toxin; and the like. Other considerations include ease of formulation and handling, economics, storage stability, and the like.
  • Host organisms of particular interest include yeast, such as Rhodotorula sp., Aureobasidium sp., Saccharomyces sp., and Sporobolomyces sp.; phylloplane organisms such as Pseudomonas sp., Erwinia sp. and Flavobacterium sp.; or such other organisms as Escherichia, Lactobacillus sp., Bacillus sp., and the like.
  • Specific organisms include Pseudomonas aeruginosa, Pseudomonas fluorescens, Saccharomyces cerevisiae, Bacillus thuringiensis, Escherichia coli, Bacillus subtilis, and the like.
  • the cellular host containing the B.t. gene may be grown in any convenient nutrient medium, where the DNA construct provides a selective advantage, providing for a selective medium so that substantially all or all of the cells retain the B.t. gene. These cells may then be harvested in accordance with conventional ways. Alternatively, the cells can be treated prior to harvesting.
  • the B.t. cells may be formulated in a variety of ways. They may be employed as wettable powders, granules or dusts, by mixing with various inert materials, such as inorganic minerals (phyllosilicates, carbonates, sulfates, phosphates, and the like) or botanical materials (powdered corncobs, rice hulls, walnut shells, and the like).
  • the formulations may include spreader-sticker adjuvants, stabilizing agents, other pesticidal additives, or surfactants.
  • Liquid formulations may be aqueous-based or non-aqueous and employed as foams, gels, suspensions, emulsifiable concentrates, or the like.
  • the ingredients may include rheological agents, surfactants, emulsifiers, dispersants, or polymers.
  • the pesticidal concentration will vary widely depending upon the nature of the particular formulation, particularly whether it is a concentrate or to be used directly.
  • the pesticide will be present in at least about 1% by weight and may be about 100% by weight.
  • the dry formulations will have from about 1-95% by weight of the pesticide while the liquid formulations will generally be from about 1-60% by weight of the solids in the liquid phase.
  • the formulations will generally have from about 10 2 to about 10 4 cells/mg. These formulations will be administered at about 50 mg (liquid or dry) to 1 kg or more per hectare.
  • the formulations can be applied to the environment of the coleopteran pest(s), e.g., plants, soil or water, by spraying, dusting, sprinkling, or the like.
  • a subculture of a B.t.. microbe, as disclosed herein, can be used to inoculate the following medium, a peptone, glucose, salts medium.
  • the salts solution and CaCl 2 solution are filter-sterilized and added to the autoclaved and cooked broth at the time of inoculation. Flasks are incubated at 30°C on a rotary shaker at 200 rpm for 64 hr.
  • the B.t. spores and crystals, obtained in the above fermentation can be isolated by procedures well known in the art
  • a frequently-used procedure is to subject the harvested fermentation broth to separation techniques, e.g., centrifugation.
  • the .5.2. strains were tested against Leptinotarsa rubiginosa, a surrogate for Leptinotarsa decemlineata, the Colorado potato beetle.
  • the bioassay was performed on two different Bacillus thuringiensis preparations, (1) The spore/crystal pellet was resuspended in water. (2) The spore/crystal pellet was treated with 0.1M
  • Prep #1 Na 2 CO 3 , pH 11.5, with 0.5% 2-mercaptoethanoI for two hours at room temperature.
  • Prep #2 was dialyzed against 0.1M Tris, pH 8, for three hours with three changes of 15 times the sample volume.
  • Prep #1 and Prep #2 contained equal amounts of active ingredient.
  • Leaves were dipped in the B.t. preparations, and first instar larvae were placed on the leaves. The larvae were incubated at 25°C for 4 days before mortality was determined.
  • One aspect of the subject invention is the transformation of plants with genes encoding a coleopteran toxin.
  • the transformed plants are resistant to attack by coleopterans.
  • Genes encoding lepidopteran-active toxins can be inserted into plant cells using a variety of techniques which are well known in the art. For example, a large number of cloning vectors comprising a replication system in E. coli and a marker that permits selection of the transformed cells are available for preparation for the insertion of foreign genes into higher plants.
  • the vectors comprise, for example, pBR322, pUC series, M13mp series, pACYC184, etc. Accordingly, the sequence encoding the B.t. toxin can be inserted into the vector at a suitable restriction site. The resulting plasmid is used for transformation into E. coli.
  • coli cells are cultivated in a suitable nutrient medium, then harvested and lysed. The plasmid is recovered. Sequence analysis, restriction analysis, electrophoresis, and other biochemical-molecular biological methods are generally carried out as methods of analysis. After each manipulation, the DNA sequence used can be cleaved and joined to the next DNA sequence. Each plasmid sequence can be cloned in the same or other plasmids. Depending on the method of inserting desired genes into the plant, other DNA sequences may be necessary.
  • the Ti or Ri plasmid is used for the transformation of the plant cell, then at least the right border, but often the right and the left border of the Ti or Ri plasmid T-DNA has to be joined as the flanking region of the genes to be inserted.
  • T-DNA for the transformation of plant cells has been intensively researched and sufficiently described in EP 120 516; Hoekema (1985) In: The Binary Plant Vector System, Offset-durkkerij Kanters B.V., Alblasserdam, Chapter 5; Fraley et al, Crit Rev. Plant Sci. 4:1-46; and An et al. (1985) EMBO J. 4:277-287.
  • the inserted DNA Once the inserted DNA has been integrated in the genome, it is relatively stable there and, as a rule, does not come out again. It normally contains a selection marker that confers on the transformed plant cells resistance to a biocide or an antibiotic, such as kanamycin, G 418, bleomycin, hygromycin, or chloramphenicol, inter alia.
  • the individually employed marker should accordingly permit the selection of transformed cells rather than cells that do not contain the inserted DNA
  • a large number of techniques are available for inserting DNA into a plant host cell. Those techniques include transformation with T-DNA using Agrobacterium tumefaciens or Agrobacterium rhizogenes as transformation agent, fusion, injection, or electroporation as well as other possible methods. If agrobacteria are used for the transformation, the DNA to be inserted has to be cloned into special plasmids, namely either into an intermediate vector or into a binary vector.
  • the intermediate vectors can be integrated into the Ti or Ri plasmid by homologous recombination owing to sequences that are homologous to sequences in the T-DNA
  • the Ti or Ri plasmid also comprises the vir region necessary for the transfer of the T-DNA Intermediate vectors cannot replicate themselves in agrobacteria.
  • the intermediate vector can be transferred into Agrobacterium tumefaciens by means of a helper plasmid (conjugation).
  • Binary vectors can replicate themselves both in E. coli and in agrobacteria. They comprise a selection marker gene and a linker or polylinker which are framed by the right and left T-DNA border regions. They can be transformed directly into agrobacteria (Holsters et al.
  • the agrobacterium used as host cell is to comprise a plasmid carrying a vir region.
  • the vir region is necessary for the transfer of the T-DNA into the plant cell. Additional T-DNA may be contained.
  • the bacterium so transformed is used for the transformation of plant cells.
  • Plant explants can advantageously be cultivated with Agrobacterium tumefaciens or Agrobacterium rhizogenes for the transfer of the DNA into the plant cell.
  • Whole plants can then be regenerated from the infected plant material (for example, pieces of leaf, segments of stalk, roots, but also protoplasts or suspension-cultivated cells) in a suitable medium, which may contain antibiotics or biocides for selection.
  • the plants so obtained can then be tested for the presence of the inserted DNA No special demands are made of the plasmids in the case of injection and electroporation.
  • the transformed cells grow inside the plants in the usual manner. They can form germ cells and transmit the transformed trait(s) to progeny plants. Such plants can be grown in the normal manner and crossed with plants that have the same transformed hereditary factors or other hereditary factors. The resulting hybrid individuals have the corresponding phenotypic properties.
  • viruses are known to infect insects. These viruses include, for example, baculoviruses and entomopoxviruses.
  • lepidopteran-active genes as described herein, can be placed with the genome of the insect virus, thus enhancing the pathogenicity of the virus.
  • Methods for constructing insect viruses which comprise B.t. toxin genes are weE known and readily practiced by those skilled in the art. These procedures are described, for example, in Merryweather et al. (Merryweather, AT., U. Weyer, M.P.G. Harris, M. Hirst, T. Booth, R.D. Possee [1990] J. Gen. Virol.
  • MOLECULE TYPE DNA (genomic)
  • ORGANISM Bacillus thuringiensis
  • ATGAATTTAA ATAATTTAGG TGGATATGAA GATAGTAATA GAACATTAAA TAATTCTCTC 60
  • GCATTTTCAC ATGAGATTCA ACCAGACCTA TTTTATTGGT GTGTACATAA GGTTAGCTTT 1080
  • CAAGACTCTC ACTTAAAAAT AGATGTTACA TTTGCGGAAA TTGCGGCTGC AAGAAAGATT 2880 GTCCAATCAA TACGCGAAGT GTATATGTCA TGGTTATCTG TTGTTCCAGG TGTAAATCAC 2940
  • ORGANISM Bacillus thuringiensis
  • MOLECULE TYPE DNA (genomic)
  • ORGANISM Bacillus thuringiensis
  • ATGAATTTAA ATAATTTAGG TGGATATGAA GATAGTAATA GAACATTAAA TAATTCTCTC 60
  • GCATTTTCAC ATGAGATTCA ACCAGACCTA TTTTATTGGA GTGCACATAA GGTTAGCTTT 1080
  • ORGANISM Bacillus thuringiensis

Abstract

Certain known and available strains of Bacillus thuringiensis (B.t.) have been found to have activity against coleopteran pests. Previously, these strains were not known to have any insecticidal properties. The B.t. strains can be used in various environments to control coleopteran pests, e.g., the Colorado Potato Beetle. Also described are novel toxins, and genes coding for these toxins, which have coleopteran activity.

Description

DESCRIPTION
NOVEL COLEOPTERAN-ACITVE BACILLU S THURINGIENSIS ISOLATES
AND GENES ENCODING COLEOPTERAN-ACTIVE TOXINS
Cross-Reference to a Related Application
This is a continuation-in-part of copending application Serial No. 07/788,638, filed November 6, 1991. Background of the Invention
The soil microbe Bacillus thuringiensis (B.t.) is a Gram-positive, spore-forming bacterium characterized by parasporal crystalline protein inclusions. These often appear microscopically as distinctively shaped crystals. The proteins are highly toxic to pests and specific in their activity. Certain B.t. toxin genes have been isolated and sequenced, and recombinant DNA-based B.t.. products produced and approved. In addition, with the use of genetic engineering techniques, new approaches for delivering B.t. endotoxins to agricultural environments are under development, including the use of plants genetically engineered with endotoxin genes for insect resistance and the use of stabilized intact microbial cells as B.t.. endotoxin delivery vehicles (Gaertner, F.H., L. Kim [1988] TIBTECH 6:S4-S7). Thus, isolated B.t. endotoxin genes are becoming commercially valuable.
Bacillus thuringiensis produces a proteinaceous paraspore or crystal which is toxic upon ingestion by a susceptible insect host. Over most of the past 30 years, commercial use of B.t. pesticides has been largely restricted to a narrow range of lepidopteran (caterpillar) pests. Preparations of the spores and crystals of B. thuringiensis subsp. kurstaki have been used for many years as commercial insecticides for lepidopteran pests. For example, B. thuringiensis var. kurstaki
HD-1 produces a crystal called a delta endotoxin which is toxic to the larvae of a number of lepidopteran insects.
In recent years, however, investigators have discovered B.t. pesticides with specificities for a much broader range of pests. For example, other species of B.t., namely israelensis and san diego (a.k.a. B.t. tenebrionis), have been used commercially to control insects of the orders Diptera and
Coleoptera, respectively (Gaertner, F.H. [1989] "Cellular Delivery Systems for Insecticidal Proteins: Living and Non-Living Microorganisms," in Controlled Delivery of Crop .Protection Agents, R.M. Wilkins, ed., Taylor and Francis, New York and London, 1990, pp. 245-255). See also Couch, T.L. (1980) "Mosquito Pathogenicity of Bacillus thuringiensis var. israelensis," Developments in Industrial Microbiology 22:61-76; Beegle, C.C., (1978) "Use of Entomogenous
Bacteria in Agroecosystems," Developments in Industrial Microbiology 20:97-104. Krieg, A., AM. Huger, G.A. Langenbruch, W. Schnetter (1983) Z. ang. Ent. 96:500-508, describe a B.t. isolate named Bacillus thuringiensis var. tenebrionis, which is reportedly active against two beetles in the order Coleoptera. These are the Colorado potato beetle, Leptinotarsa decemlineata, and Agelastica alni.
Recently, many new subspecies of B.t, have been identified, and many genes responsible for active d-endotoxin proteins have been isolated (HOfte, H., H.R. Whiteley [1989]
Microbiological Reviews 52(2):242-255). HOfte and Whiteley classified 42B.Z crystal protein genes into 14 distinct genes, grouped into 4 major classes based on amino-acid sequence and host range.
The classes were Cryl (Lepidoptera-specific), CryII (Lepidoptera- and Diptera-specific), CryIII
(Coleoptera-specific), and CrylV (Diptera-specific). The discovery of strains specifically toxic to protozoan pathogens, ani mal-parasitic liver flukes (Trematoda), or mites (Acari) has broadened the potential B.t. product spectrum even further (see Feitelson, J.S., J. Payne, L. Kim [1992]
Bio/Technology 10:271-275). With activities against unique targets, these novel strains retain their very high biological specificity; nontarget organisms remain unaffected. The availability of a large number of diverse B.t. toxins may also enable farmers to adopt product-use strategies that mimmize the risk that B.t. -resistant pests will arise.
The cloning and expression of a B.t. crystal protein gene in Escherichia coli has been described in the published literature (see, for example, Schnepf, HE., H.R. Whitely [1981] Proc. NatlAcad. ScL USA 78:2893-2897). U.S. Patent 4,448,885 and U.S. Patent 4,467,036 both disclose the expression of B.t. crystal protein in E. coli. U.S. Patent 4,853,331 discloses B. thuringiensis strain son diego (a.k.a. B.t. tenebrionis) which can be used to control coleopteran pests in various environments.
Brief Summary of the Invention
The subject invention concerns the discovery that certain known and publicly available strains of Bacillus thuringiensis (B.t..) are active against coleopteran pests. This is a surprising discovery since these B.t. microbes were not known to have any insecticidal properties.
The microbes of the subject invention, wereobtained from the Howard Dalmage collection held by the NRRL culture repository in Peoria, Illinois and are designated B.t. HD511, B.t.. HD867, and B.t. HD1011. These microbes, and variants of these microbes, as well as genes and toxins obtainable therefrom, can be used to control coleopteran pests. The procedures for using these microbes are similar to known procedures for using B.t. microbes to control coleopteran pests.
The subject invention also includes variants of B.t. microbes which have substantially the same pesticidal properties as the exemplified isolates. These variants would include, for example, mutants. Procedures for making mutants are well known in the microbiological art Ultraviolet light and nitrosoguanidine are used extensively toward this end. Further, the invention also includes the treatment of substantially intact B.t. cells, and recombinant cells containing a gene of the invention, to prolong the pesticidal activity when the substantially intact cells are applied to the environment of a target pest. Such treatment can be by chemical or physical means, or a combination of chemical or physical means, so long as the technique does not deleteriously affect the properties of the pesticide, nor diminish the cellular capability in protecting the pesticide. The treated cell acts as a protective coating for the pesticidal toxin. The toxin becomes available to act as such upon ingestion by a target insect.
Disclosed herein are specific toxins, and nucleotide sequences encoding these toxins, obtainable from the exemplified isolates. Advantageously, these nucleotide sequences can be used to transform other microbes or plants to create insecticidal compositions and plants.
Brief Description of the Sequences
SEQ ID NO. 1 is the nucleotide sequence encoding toxin HD511.
SEQ ID NO. 2 is the amino acid sequence of toxin HD511.
SEQ ID NO. 3 is the nucleotide sequence encoding toxin HD867.
SEQ ID NO. 4 is the amino acid sequence of toxin HD867.
Detailed Disclosure of the Invention
A summary of the characteristics of the B. thuringiensis microbes of the subject invention is shown in Table 1.
Table 1. A comparison of the novel coleopteran-active strains with B.ts.d.
Approx. Molecular
Strain Crystal Type Weight of Protein* Serotype
HD511 Bipyramid 130, 143 15, dakota
HD867 Bipyramid 130 18, kumamotoensis
HD1011 Multiple amorphic 130, 140 20a20c, pondicheriensis * as shown on a standard polyacrylamide gel.
The cultures disclosed in this application are on deposit in the Agricultural Research Service Patent Culture Collection (NRRL), Northern Regional Research Center, 1815 North University Street, Peoria, Illinois 61604, USA
In a preferred embodiment, the nucleotide sequence information provided herein can be used to make primers which, when using standard PCR procedures, can be used to obtain the desirable genes from the disclosed isolates. These procedures are well known and commonly used in this art. Alternatively, synthetic genes, or portions thereof, can be made using a "gene machine" and the sequence information provided herein.
The subject invention pertains not only to the specific genes and toxins exemplified herein, but also to genes and toxins obtainable from variants of the disclosed isolates. These variants would have essentially the same coleopteran activity as the exemplified isolates.
Furthermore, using the DNA and amino acid sequence provided herein, a person skilled in the art could readily construct fragments or mutations of the genes and toxins disclosed herein. These fragments and mutations, which retain the coleopteran activity of the exemplified toxins, would be within the scope of the subject invention. Also, because of the redundancy of the genetic code, a variety of different DNA sequences can encode the amino acid sequences disclosed herein. It is well within the skill of a person trained in the art to create these alternative DNA sequences encoding the same, or similar, toxins. These DNA sequences are within the scope of the subject invention. As used herein, reference to "essentially the same" sequence refers to sequences which, have amino acid substitutions, deletions, additions, or insertions which do not materially affect coleopteran activity. Fragments retaining coleopteran activity are also included in this definition.
The coleopteran-active toxin genes of the subject invention can be isolated by known procedures and can be introduced into a wide variety of microbial hosts. Expression of the toxin gene results, directly or indirectly, in the intracellular production and maintenance of the pesticide. With suitable hosts, e.g., Pseudomonas, the microbes can be applied to the situs of coleopteran insects where they will proliferate and be ingested by the insects. The result is a control of the unwanted insects. Alternatively, the microbe hosting the toxin gene can be treated under conditions that prolong the activity of the toxin produced in the cell. The treated cell then can be applied to the environment of target pest(s). The resulting product retains the toxicity of the B.t. toxin.
Where the B.t. toxin gene is introduced via a suitable vector into a microbial host, and said host is applied to the environment in a living state, it is important that certain host microbes be used. Microorganism hosts are selected which are known, to occupy the "phytosphere"
(phylloplane, phyllosphere, rhizosphere, and/or rhizoplane) of one or more crops of interest These microorganisms are selected so as to be capable of successfully competing in the particular environment (crop and other insect habitats) with the wild-type microorganisms, provide for stable maintenance and expression of the gene expressing the polypeptide pesticide, and, desirably, provide for improved protection of the pesticide from environmental degradation and inactivation.
A large number of microorganisms are known to inhabit the phylloplane (the surface of the plant leaves) and/or the rhizosphere (the soil surrounding plant roots) of a wide variety of important crops. These microorganisms include bacteria, algae, and fungi. Of particular interest are microorgamsms, suchi as bacteria, e.g., genera Pseudomonas, Erwinia, Serratia, Klebsiella, Xanthomonas, Streptomyces, Rhizobium, Rhodopseudomonas, Methylophilius, Agrobacterium, Acetobacter, Lactobacillus, Arthrobacter, Azotobacter, Leuconostoc, and Alcaligenes; fungi, particularly yeast, e.g., genera Saccharomyces, Cryptococcus, Kluyveromyces, Sporobolomyces, Rhodotorula, and Aureobasidium. Of particular interest are such phytosphere bacterial species as Pseudomonas syringae, Pseudomonas fluorescens, Serratia marcescens, Acetobacter xylinum,
Agrobacterium tumefaciens, Rhodopseudomonas spheroides, Xanthomonas campestris, Rhizobium melioti, Alcaligenes entrophus, and Azotobacter vinlandii; and phytosphere yeast species such as Rhodotorula rubra, R. glutinis, R. marina, R. aurantiaca, Cryptococcus albidus, C. diffluens, C. laurentii, Saccharomyces rosei, S. pretoriensis, S. cerevisiae, Sporobolomyces roseus, S. odorus, Kluyveromyces veronae, and Aureobasidium pollulans. Of particular interest are the pigmented microorganisms.
A wide variety of ways are available for introducing the B.t. gene expressing the toxin into the microorganism host under conditions which allow for stable maintenance and expression of the gene. One can provide for DNA constructs which include the transcriptional and translational regulatory signals for expression of the toxin gene, the toxin gene under their regulatory control and a DNA sequence homologous with a sequence in the host organism, whereby integration will occur, and/or a replication system which is functional in the host, whereby integration or stable maintenance will occur.
The transcriptional initiation signals will include a promoter and a transcriptional initiation start site. In some instances, it may be desirable to provide for regulative expression of the toxin, where expression of the toxin will only occur after release into the environment This can be achieved with operators or a region binding to an activator or enhancers, which are capable of induction upon a change in the physical or chemical environment of the microorganisms. For example, a temperature sensitive regulatory region may be employed, where the organisms may be grown up in the laboratory without expression of a toxin, but upon release into the environment, expression begins. Other techniques may employ a specific nutrient medium in the laboratory, which inhibits the expression of the toxin, where the nutrient medium in the environment allows for expression of the toxin. For translational initiation, a ribosomal binding site and an initiation codon will be present.
Various manipulations may be employed for enhancing the expression of the messenger, particularly by using an active promoter, as well as by employing sequences, which enhance the stability of the messenger RNA The initiation and translational termination region will involve stop codon(s), a terminator region, and optionally, a polyadenylation signal.
In the direction of transcription, namely in the 5' to 3' direction of the coding or sense sequence, the construct can involve the transcriptional regulatory region, if any, and the promoter, where the regulatory region may be either 5' or 3' of the promoter, the ribosomal binding site, the initiation codon, the structural gene having an open reading frame in phase with the initiation codon, the stop codon(s), the polyadenylation signal sequence, if any, and the terminator region. This sequence as a double strand may be used by itself for transformation of a microorganism host, but will usually be included with a DNA sequence involving a marker, where the second DΝA sequence may be joined to the toxin expression construct during introduction of the DΝA into the host
By a marker is intended a structural gene which provides for selection of those hosts which have been modified or transformed. The marker will normally provide for selective advantage, for example, providing for biocide resistance, e.g., resistance to antibiotics or heavy metals; complementation, so as to provide prototropy to an auxotrophic host, or the like. Preferably, complementation is employed, so that the modified host may not only be selected, but may also be competitive in the field. One or more markers may be employed in the development of the constructs, as well as for modifying the host The organisms may be further modified by providing for a competitive advantage against other wild-type microorganisms in the field. For example, genes expressing metal chelating agents, e.g., siderophores, may be introduced into the host along with the structural gene expressing the toxin. In this manner, the enhanced expression of a siderophore may provide for a competitive advantage for the toxin-producing host, so that it may effectively compete with the wild-type microorganisms and stably occupy a niche in the environment
Where stable episomal maintenance or integration is desired, a plasmid will be employed which has a replication system which is functional in the host The replication system may be derived from the chromosome, an episomal element normally present in the host or a different host, or a replication system from a virus which is stable in the host A large number of plasmids are available, such as pBR322, pACYC184, RSF1010, pR01614, and the like. See for example, Olson et aL (1982) J. Bacterial 150:6069, and Bagdasarian et aL (1981) Gene 16:237, and U.S. Patent Νos.4,356,270, 4362,817, and 4,371,625.
Where no functional replication system is present, the construct will also include a sequence of at least 50 basepairs (bp), preferably at least about 100 bp, and usually not more than about 1000 bp of a sequence homologous with a sequence in the host. In this way, the probability of legitimate recombination is enhanced, so that the gene will be integrated into the host and stably maintained by the host. Desirably, the toxin gene will be in close proximity to the gene providing for complementation as well as the gene providing for the competitive advantage. Therefore, in the event that a toxin gene is lost, the resulting organism will be likely to also lose the complementing gene and/or the gene providing for the competitive advantage, so that it will be unable to compete in the environment with the gene retaining the intact construct.
A large number of transcriptional regulatory regions are available from a wide variety of microorganism hosts, such as bacteria, bacteriophage, cyanobacteria, algae, fungi, and the like. Various transcriptional regulatory regions include the regions associated with the trp gene, lac gene, gal gene, the lambda left and right promoters, the tac promoter, and the naturally-occurring promoters associated with the toxin gene, where functional in the host. See for example, U.S. Patent Nos. 4,332,898, 4,342,832 and 4,356,270. The termination region may be the termination region normally associated with the transcriptional initiation region or a different transcriptional initiation region, so long as the two regions are compatible and functional in the host.
The B.t. gene can be introduced between the transcriptional and translational initiation region and the transcriptional and translational termination region, so as to be under the regulatory control of the initiation region. This construct can be included in a plasmid, which could include at least one replication system, but may include more than one, where one replication system is employed for cloning during the development of the plasmid and the second replication system is necessary for functioning in the ultimate host. In addition, one or more markers may be present, which have been described previously. Where integration is desired, the plasmid will desirably include a sequence homologous with the host genome.
The transformants can be isolated in accordance with conventional ways, usually employing a selection technique, which allows for selection of the desired organism as against unmodified organisms or transferring organisms, when present. The transformants then can be tested for pesticidal activity.
Suitable host cells, where the pesticide-containing cells will be treated to prolong the activity of the toxin in the cell when the then treated cell is applied to the environment of target pest(s), may include either prokaryotes or eukaryotes, normally being limited to those cells which do not produce substances toxic to higher organisms, such as mammals. However, organisms which produce substances toxic to higher organisms could be used, where the toxin is unstable or the level of application sufficiently low as to avoid any possibility of toxicity to a mammalian host
As hosts, of particular interest will be the prokaryotes and the lower eukaryotes, such as fungi. Illustrative prokaryotes, both Gram-negative and -positive, include Enterobacteriaceae, such as
Escherichia, Erwinia, Shigella, Salmonella, and Proteus; Bacillaceae; Rhizobiceae, such as
Rhizobium; Spirillaceae, such as photobacterium, Zymomonas, Serratia, Aeromonas, Vibrio,
Desulfovibrio, Spirillum; Lactobacillaceae; Pseudomonadaceae, such as Pseudomonas and
Acetobacter; Azotobacteraceae and Nitrobacteraceae. Among eukaryotes are fungi, such as Phycomycetes and Ascomycetes, which includes yeast, such as Saccharomyces and
Schizosaccharomyces; and Basidiomycetes yeast, such as Rhodotorula, Aureobasidium,
Sporobolomyces, and the like.
The cell will usually be intact and be substantially in the proliferative form when treated, rather than in a spore form, although in some instances spores may be employed.
Treatment of the microbial cell, e.g., a microbe containing the B.t.. toxin gene, can be by chemical or physical means, or by a combination of chemical and/or physical means, so long as the technique does not deleteriously affect the properties of the toxin, nor diminish the cellular capability in protecting the toxin. Examples of chemical reagents are halogenating agents, particularly halogens of atomic no. 17-80. More particularly, iodine can be used under mild conditions and for sufficient time to achieve the desired results. Other suitable techniques include treatment with aldehydes, such as formaldehyde and glutaraldehyde; anti-infectives, such as zephiran chloride and cetylpyridinium chloride; alcohols, such as isopropyl and ethanol; various histologic fixatives, such as Bouin's fixative and Helly's fixative (See: Humason, Gretchen L.
[1967] Animal Tissue Techniques, W.H. Freeman and Company); or a combination of physical (heat) and chemical agents that preserve and prolong the activity of the toxin produced in the cell when the cell is administered to the host animal. Examples of physical means are short wavelength radiation such as gamma-radiation and X-radiation, freezing, UV irradiation, lyophilization, and the like.
The cells generally will have enhanced structural stability which will enhance resistance to environmental conditions. Where the pesticide is in a proform, the method of inactivation should be selected so as not to inhibit processing of the proform to the mature form of the pesticide by the target pest pathogen. For example, formaldehyde will crosslink proteins and could inhibit processing of the profo m of a polypeptide pesticide. The method of inactivation or killing retains at least a substantial portion of the bio-availability or bioactivity of the toxin.
Characteristics of particular interest in selecting a host cell for purposes of production include ease of introducing the B.t. gene into the host, availability of expression systems, efficiency of expression, stability of the pesticide in the host, and the presence of auxiliary genetic capabilities. Characteristics of interest for use as a pesticide microcapsule include protective qualities for the pesticide, such as thick cell walls, pigmentation, and intracellular packaging or formation of inclusion bodies; leaf affinity; lack of mammalian toxicity, attractiveness to pests for ingestion; ease of killing and fixing without damage to the toxin; and the like. Other considerations include ease of formulation and handling, economics, storage stability, and the like.
Host organisms of particular interest include yeast, such as Rhodotorula sp., Aureobasidium sp., Saccharomyces sp., and Sporobolomyces sp.; phylloplane organisms such as Pseudomonas sp., Erwinia sp. and Flavobacterium sp.; or such other organisms as Escherichia, Lactobacillus sp., Bacillus sp., and the like. Specific organisms include Pseudomonas aeruginosa, Pseudomonas fluorescens, Saccharomyces cerevisiae, Bacillus thuringiensis, Escherichia coli, Bacillus subtilis, and the like.
The cellular host containing the B.t. gene may be grown in any convenient nutrient medium, where the DNA construct provides a selective advantage, providing for a selective medium so that substantially all or all of the cells retain the B.t. gene. These cells may then be harvested in accordance with conventional ways. Alternatively, the cells can be treated prior to harvesting. The B.t. cells may be formulated in a variety of ways. They may be employed as wettable powders, granules or dusts, by mixing with various inert materials, such as inorganic minerals (phyllosilicates, carbonates, sulfates, phosphates, and the like) or botanical materials (powdered corncobs, rice hulls, walnut shells, and the like). The formulations may include spreader-sticker adjuvants, stabilizing agents, other pesticidal additives, or surfactants. Liquid formulations may be aqueous-based or non-aqueous and employed as foams, gels, suspensions, emulsifiable concentrates, or the like. The ingredients may include rheological agents, surfactants, emulsifiers, dispersants, or polymers.
The pesticidal concentration will vary widely depending upon the nature of the particular formulation, particularly whether it is a concentrate or to be used directly. The pesticide will be present in at least about 1% by weight and may be about 100% by weight. The dry formulations will have from about 1-95% by weight of the pesticide while the liquid formulations will generally be from about 1-60% by weight of the solids in the liquid phase. The formulations will generally have from about 102 to about 104 cells/mg. These formulations will be administered at about 50 mg (liquid or dry) to 1 kg or more per hectare.
The formulations can be applied to the environment of the coleopteran pest(s), e.g., plants, soil or water, by spraying, dusting, sprinkling, or the like.
Following are examples which illustrate procedures, including the best mode, for practicing the invention. These examples should not be construed as limiting. All percentages are by weight and all solvent mixture proportions are by volume unless otherwise noted.
Example 1 - Culturing B.t. microbes
A subculture of a B.t.. microbe, as disclosed herein, can be used to inoculate the following medium, a peptone, glucose, salts medium.
Bacto Peptone 7.5 g/l
Glucose 1.0 g/l
KH2PO4 3.4 g/l
K2HPO4 4.35 g/l
Salt Solution 5.0 ml/l
CaCl2 Solution 5.0 ml/l
Salts Solution (100 ml)
MgSO4.7H2O 2.46 g
MnSO4.H2O 0.04 g
ZnSO4.7H2O 0.28 g FeSO4.7H2O 0.40 g
CaCl2 Solution (100 ml)
CaCl2.2H2O 3.66 g
pH 7.2
The salts solution and CaCl2 solution are filter-sterilized and added to the autoclaved and cooked broth at the time of inoculation. Flasks are incubated at 30°C on a rotary shaker at 200 rpm for 64 hr.
The above procedure can be readily scaled up to large fermentors by procedures well known in the art
The B.t. spores and crystals, obtained in the above fermentation, can be isolated by procedures well known in the art A frequently-used procedure is to subject the harvested fermentation broth to separation techniques, e.g., centrifugation.
Example 2 - Testing of B.t Microbes Spores and Crystals
The .5.2. strains were tested against Leptinotarsa rubiginosa, a surrogate for Leptinotarsa decemlineata, the Colorado potato beetle.
The bioassay was performed on two different Bacillus thuringiensis preparations, (1) The spore/crystal pellet was resuspended in water. (2) The spore/crystal pellet was treated with 0.1M
Na2CO3, pH 11.5, with 0.5% 2-mercaptoethanoI for two hours at room temperature. Prep #2 was dialyzed against 0.1M Tris, pH 8, for three hours with three changes of 15 times the sample volume. Prep #1 and Prep #2 contained equal amounts of active ingredient.
Leaves were dipped in the B.t. preparations, and first instar larvae were placed on the leaves. The larvae were incubated at 25°C for 4 days before mortality was determined.
Table 2. Percent Mortality
Strain Prep #1 Prep #2
HD511 52% 92%
HD867 92% 100%
HD1011 36% 92%
Control 0% 0% Example 3 - Insertion of Toxin Gene Into Plants
One aspect of the subject invention is the transformation of plants with genes encoding a coleopteran toxin. The transformed plants are resistant to attack by coleopterans.
Genes encoding lepidopteran-active toxins, as disclosed herein, can be inserted into plant cells using a variety of techniques which are well known in the art. For example, a large number of cloning vectors comprising a replication system in E. coli and a marker that permits selection of the transformed cells are available for preparation for the insertion of foreign genes into higher plants. The vectors comprise, for example, pBR322, pUC series, M13mp series, pACYC184, etc. Accordingly, the sequence encoding the B.t. toxin can be inserted into the vector at a suitable restriction site. The resulting plasmid is used for transformation into E. coli. The E. coli cells are cultivated in a suitable nutrient medium, then harvested and lysed. The plasmid is recovered. Sequence analysis, restriction analysis, electrophoresis, and other biochemical-molecular biological methods are generally carried out as methods of analysis. After each manipulation, the DNA sequence used can be cleaved and joined to the next DNA sequence. Each plasmid sequence can be cloned in the same or other plasmids. Depending on the method of inserting desired genes into the plant, other DNA sequences may be necessary. If, for example, the Ti or Ri plasmid is used for the transformation of the plant cell, then at least the right border, but often the right and the left border of the Ti or Ri plasmid T-DNA has to be joined as the flanking region of the genes to be inserted.
The use of T-DNA for the transformation of plant cells has been intensively researched and sufficiently described in EP 120 516; Hoekema (1985) In: The Binary Plant Vector System, Offset-durkkerij Kanters B.V., Alblasserdam, Chapter 5; Fraley et al, Crit Rev. Plant Sci. 4:1-46; and An et al. (1985) EMBO J. 4:277-287.
Once the inserted DNA has been integrated in the genome, it is relatively stable there and, as a rule, does not come out again. It normally contains a selection marker that confers on the transformed plant cells resistance to a biocide or an antibiotic, such as kanamycin, G 418, bleomycin, hygromycin, or chloramphenicol, inter alia. The individually employed marker should accordingly permit the selection of transformed cells rather than cells that do not contain the inserted DNA
A large number of techniques are available for inserting DNA into a plant host cell. Those techniques include transformation with T-DNA using Agrobacterium tumefaciens or Agrobacterium rhizogenes as transformation agent, fusion, injection, or electroporation as well as other possible methods. If agrobacteria are used for the transformation, the DNA to be inserted has to be cloned into special plasmids, namely either into an intermediate vector or into a binary vector. The intermediate vectors can be integrated into the Ti or Ri plasmid by homologous recombination owing to sequences that are homologous to sequences in the T-DNA The Ti or Ri plasmid also comprises the vir region necessary for the transfer of the T-DNA Intermediate vectors cannot replicate themselves in agrobacteria. The intermediate vector can be transferred into Agrobacterium tumefaciens by means of a helper plasmid (conjugation). Binary vectors can replicate themselves both in E. coli and in agrobacteria. They comprise a selection marker gene and a linker or polylinker which are framed by the right and left T-DNA border regions. They can be transformed directly into agrobacteria (Holsters et al. [1978] Mol Gen. Genet 163:181-187). The agrobacterium used as host cell is to comprise a plasmid carrying a vir region. The vir region is necessary for the transfer of the T-DNA into the plant cell. Additional T-DNA may be contained. The bacterium so transformed is used for the transformation of plant cells. Plant explants can advantageously be cultivated with Agrobacterium tumefaciens or Agrobacterium rhizogenes for the transfer of the DNA into the plant cell. Whole plants can then be regenerated from the infected plant material (for example, pieces of leaf, segments of stalk, roots, but also protoplasts or suspension-cultivated cells) in a suitable medium, which may contain antibiotics or biocides for selection. The plants so obtained can then be tested for the presence of the inserted DNA No special demands are made of the plasmids in the case of injection and electroporation.
It is possible to use ordinary plasmids, such as, for example, pUC derivatives.
The transformed cells grow inside the plants in the usual manner. They can form germ cells and transmit the transformed trait(s) to progeny plants. Such plants can be grown in the normal manner and crossed with plants that have the same transformed hereditary factors or other hereditary factors. The resulting hybrid individuals have the corresponding phenotypic properties.
Example 4 - Cloning of Novel B.t. Genes Into Insect Viruses
A number of viruses are known to infect insects. These viruses include, for example, baculoviruses and entomopoxviruses. In one embodiment of the subject invention, lepidopteran-active genes, as described herein, can be placed with the genome of the insect virus, thus enhancing the pathogenicity of the virus. Methods for constructing insect viruses which comprise B.t. toxin genes are weE known and readily practiced by those skilled in the art. These procedures are described, for example, in Merryweather et al. (Merryweather, AT., U. Weyer, M.P.G. Harris, M. Hirst, T. Booth, R.D. Possee [1990] J. Gen. Virol. 72:1535-1544) and Martens et al. (Martens, J.W.M., G. Honee, D. Zuidema, J.W.M. van Lent, B. Visser, J.M. Vlak [1990] Appl. Environmental
Microbial. 56(9):2764-2770). SEQUENCE LISTING
(1) GENERAL INFORMATION:
(i) APPLICANT: Payne, Jewel M.
Fu, Jenny M.
(ii) TITLE OF INVENTION: Novel Bacillus thuringiensis Gene
Encoding a Coleopteran-Active Toxin
(iii) NUMBER OF SEQUENCES: 4
(iv) CORRESPONDENCE ADDRESS:
(A) ADDRESSEE: David R. Saliwanchik
(B) STREET: 2421 N.W. 41st Street, Suite A-1
(C) CITY: Gainesville
(D) STATE: FL
(E) COUNTRY: USA
(F) ZIP: 32606
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(D) SOFTWARE: Patentln Release #1.0, Version #1.25
(vi) CURRENT APPLICATION DATA:
(A) APPLICATION NUMBER: US
(B) FILING DATE:
(C) CLASSIFICATION:
(vii) PRIOR APPLICATION DATA:
(A) APPLICATION NUMBER: US 07/788,638
(B) FILING DATE: 6-NOV-1991
(C) CLASSIFICATION:
(viii) ATTORNEY/AGENT INFORMATION:
(A) NAME: Saliwanchik, David R.
(B) REGISTRATION NUMBER: 31,794
(C) REFERENCE/DOCKET NUMBER: MA68.C1
(ix) TELECOMMUNICATION INFORMATION:
(A) TELEPHONE: 904-375-8100
(B) TELEFAX: 904-372-5800
(2) INFORMATION FOR SEQ ID NO:1:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 3414 base pairs
(B) TYPE: nucleic acid
(C) STRANDEDNESS : double
(D) TOPOLOGY: linear
(ii) MOLECULE TYPE: DNA (genomic)
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: NO
(vi) ORIGINAL SOURCE:
(A) ORGANISM: Bacillus thuringiensis
(A) STRAIN: dakota
(C) INDIVIDUAL ISOLATE: HD511
(vii) IMMEDIATE SOUREE:
(A) LIBRARY: Lamdagem (TM)-11 library of J.M. Fu
(B) CLONE: 511
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:1:
ATGAATTTAA ATAATTTAGG TGGATATGAA GATAGTAATA GAACATTAAA TAATTCTCTC 60
AATTATCCTA CTCAAAAAGC ATTATCACCA TCATTAAAGA ATATGAACTA CCAGGATTTT 120
TTATCTATAA CTGAGAGGGA ACAACCTGAA GCACTCGCTA GTGGTAATAC AGCTATTAAT 180
ACTGTAGTTA GTGTTACAGG GGCTACACTA AGTGCATTAG GTGTCCCAGG TGCAAGTTTT 240
ATCACTAACT TTTACCTGAA AATTACAGGC CTTTTATGGC CGCACAATAA AAATATTTGG 300
GATGAATTTA TGACAGAAGT AGAAACACTT ATTGAACAAA AAATAGAACA ATATGCAAGG 360 AATAAAGCAC TTGCAGAATT AGAGGGATTA GGAAATAACT TAACAATATA TCAACAGGCA 420
CTTGAAGATT GGCTGAACAA TCCTGATGAT CCAGCAACTA TAACACGAGT GATAGATCGT 480
TTTCGTATAT TAGATGCTTT ATTTGAATCA TATATGCCGT CATTTAGGGT TGCTGGATAT 540
GAAATACCAT TACTAACAGT TTACGCACAA GCGGCAAACC TTCATCTAGC TTTATTAAGA 600
GATTCTACTC TTTATGGAGA TAAATGGGGA TTCACTCAGA ACAACATTGA GGAAAATTAT 660
AATCGTCAAA AGAAACATAT CTCTGAATAT TCTAACCATT GCGTTAAGTG GTATAATAGT 720
GGTCTTAGCA GATTGAACGG TTCCACTTAT GAACAATGGA TAAATTATAA TCGTTTTCGT 780
AGAGAAATGA TATTAATGGT ATTAGATATT GCTGCTGTAT TTCCTATTTA TGACCCTCGA 840
ATGTATTCAA TGGAAACAAG TACGCAGTTA ACGAGAGAAG TGTATACCGA TCCAATTAGC 900
TTGTCAATTA GCAATCCAGA TATAGGTCCA AGTTTTTCTC AGATGGAAAA TACTGCGTTT 960
AGAACACCAC ACCTTGTTGA TTATTTAGAT GAGCTTTATA TATATACATC AAAATATAAA 1020
GCATTTTCAC ATGAGATTCA ACCAGACCTA TTTTATTGGT GTGTACATAA GGTTAGCTTT 1080
AAAAAATCGG AGCAATCCAA TTTATATACA ACAGGCATAT ATGGTAAAAC AAGTGGATAT 1140
ATTTCATCAG GAGCATATTC ATTTAGAGGG AATGATATCT ATAGAACATT AGCAGCTCCA 1200
TCAGTTGTAG TTTATCCGTA TACTCAGAAT TATGGTGTCG AGCAAGTTGA GTTTTACGGT 1260
GTAAAAGGGC ATGTACATTA TAGAGGAGAT AACAAATATG ATCTGACGTA TGATTCTATT 1320
GATCAATTAC CCCCAGACGG AGAACCAATA CACGAAAAAT ACACTCATCG ATTATGTCAT 1380
GCTACAGCTA TATCTAAATC AACTCCGGAT TATGATAATG CTACTATCCC GATCTTTTCT 1440
TGGACGCATA GAAGTGCGGA GTATTACAAT AGAATCTATC CAAACAAAAT CAAAAAAATT 1500
CCAGCTGTAA AAATGTATAA ACTAGATGAT CTATCTACAG TTGTCAAAGG GCCTGGATTT 1560
ACAGGTGGAG ATTTAGTTAA GAGAGGGAGT AATGGTTATA TAGGAGATAT AAAGGCTACC 1620
GTAAACTCAC CACTTTCTCA AAAATATCGT GTTAGAGTTC GATACGCCAC TAGTGTTTCT 1680
GGACTATTCA ACGTGTTTAT TAATGATGAA ATAGCGCTTC AAAAAAATTT TCAAAGTACT 1740
GTAGAAACAA TAGGTGAAGG AAAAGATTTA ACCTATGGTT CATTTGGATA TATAGAATAT 1800
TCTACGACCA TTCAATTTCC GAATGAGCAT CCAAAAATCA CTCTTCATTT AAACCATTTG 1860
AGTAACAATT CACCATTTTA TGTAGATTCA ATCGAATTTA TCCCTGTAGA TGTAAATTAT 1920
GATGAAAAAG AAAAACTAGA AAAAGCACAG AAAGCCGTGA ATACCTTGTT TACAGAGGGA 1980
AGAAATGCAC TCCAAAAATA CGTGACAGAT TATAAAGTGG ACCAGGTTTC AATTTTAGTG 2040
GATTGTATAT CAGGGGATTT ATATCCCAAT GAGAAACGCG AACTACAAAA TCTAGTCAAA 2100
TACGCAAAAC GTTTGAGCTA TTCCCGTAAT TTACTTCTAG ATCCCACATT CGATTCTATT 2160
AATTCATCTG AGGAGAATGG TTGGTATGGA AGTAATGGTA TTGTGATTGG AAATGGGGAT 2220
TTTGTATTCA AAGGTAACTA TTTAATTTTT TCAGGTACCA ATGATACACA ATATCCAACA 2280
TATCTCTACC AAAAAATAGA TGAATCCAAA CTCAAAGAAT ATTCACGCTA TAAACTGAAA 2340
GGTTTTATCG AAAGTAGTCA GGATTTAGAA GCTTATGTGA TTCGCTATGA TGCAAAACAT 2400
AGAACATTGG ATGTTTCTGA TAATCTATTA CCAGATATTC TCCCTGAGAA TACATGTGGA 2460
GAACCAAATC GCTGCGCGGC ACAACAATAC CTGGATGAAA ATCCAAGTTC AGAATGTAGT 2520
TCGATGCAAG ATGGAATTTT GTCTGATTCG CATTCATTTT CTCTTAATAT AGATACAGGT 2580
TCTATCAATC ACAATGAGAA TTTAGGAATT TGGGTGTTGT TTAAAATTTC GACATTAGAA 2640
GGATATGCGA AATTTGGAAA TCTAGAAGTG ATTGAAGATG GCCCAGTTAT TGGAGAAGCA 2700
TTAGCCCGTG TGAAGCGCCA AGAAACGAAG TGGAGAAACA AGTTAGCCCA AATGACAACG 2760
GAAACACAAG CGATTTATAC ACGAGCAAAA CAAGCGCTGG ATAATCTTTT TGCGAATGCA 2820
CAAGACTCTC ACTTAAAAAT AGATGTTACA TTTGCGGAAA TTGCGGCTGC AAGAAAGATT 2880 GTCCAATCAA TACGCGAAGT GTATATGTCA TGGTTATCTG TTGTTCCAGG TGTAAATCAC 2940
CCTATTTTTA CAGAGTTAAG TGGGAGAGTA CAACGAGCAT TTCAATTATA TGATGTACGA 3000
AATGTTGTGC GTAATGGTCG ATTCCTCAAT GGCTTATCCG ATTGGATTGT AACATCTGAC 3060
GTAAACGTAC AAGAAGAAAA TGGGAATAAC GTATTAGTTC TTAACAATTG GGATGCGCAA 3120
GTATTACGAA ACGTAAAACT CTATCAAGAC CGTGGGTATG TCTTACGTGT AACAGCGCGC 3180
AAGATAGGAA TTGGGGAAGG ATATATAACG ATTACTGATG AAGAAGGGCA TACAGATCAA 3240
TTGAGATTTA CTGCATGTGA AGAGATTGAT GCATCTAATG CGTTTATATC CGGTTATATT 3300
ACAAAAGAAC TGGAATTCTT CCCAGATACA GAGAAAGTGC ATATAGAAAT AGGCGAAACA 3360
GAAGGAATAT TCCTGGTAGA AAGTATAGAG TTATTTTTGA TGGAAGAGCT ATGT 3414
(2) INFORMATION FOR SEQ ID NO:2:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 1138 amino acids
(B) TYPE: amino acid
(C) STRANDEDNESS : single
(D) TOPOLOGY: linear
(ii) MOLECULE TYPE: protein
(iii) HYPOTHETICAL: YES
(iv) ANTI-SENSE: NO
(vi) ORIGINAL SOURCE:
(A) ORGANISM: Bacillus thuringiensis
(B) STRAIN: dakota
(C) INDIVIDUAL ISOLATE: HD511
(vii) IMMEDIATE SOURCE:
(A) LIBRARY : Lamdagem (TM)-11 library of J.M. Fu
(B) CLONE: 511
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 2:
Met Asn Leu Asn Asn Leu Gly Gly Tyr Glu Asp Ser Asn Arg Thr Leu 1 5 10 15
Asn Asn ser Leu Asn Tyr Pro Thr Gln Lys Ala Leu Ser Pro Ser Leu
20 25 30
Lys Asn Met Asn Tyr Gln Asp Phe Leu Ser Ile Thr Glu Arg Glu Gln
35 40 45
Pro Glu Ala Leu Ala Ser Gly Asn Thr Ala Ile Asn Thr Val Val Ser
50 55 60
Val Thr Gly Ala Thr Leu Ser Ala Leu Gly Val Pro Gly Ala ser Phe 65 70 75 80 Ile Thr Asn Phe Tyr Leu Lys Ile Thr Gly Leu Leu Trp Pro His Asn
85 90 95
Lys Asn Ile Trp Asp Glu Phe Met Thr Glu Val Glu Thr Leu Ile Glu
100 105 110
Gln Lys Ile Glu Gln Tyr Ala Arg Asn Lys Ala Leu Ala Glu Leu Glu
115 120 125
Gly Leu Gly Asn Asn Leu Thr Ile Tyr Gln Gln Ala Leu Glu Asp Trp
130 135 140
Leu Asn Asn Pro Asp Asp Pro Ala Thr Ile Thr Arg Val Ile Asp Arg
145 150 155 160
Phe Arg Ile Leu Asp Ala Leu Phe Glu Ser Tyr Met Pro Ser Phe Arg
165 170 175
Val Ala Gly Tyr Glu Ile Pro Leu Leu Thr Val Tyr Ala Gln Ala Ala
180 185 190
Asn Leu His Leu Ala Leu Leu Arg Asp Ser Thr Leu Tyr Gly Asp Lys
195 200 205 Trp Gly Phe Thr Gln Asn Asn Ile Glu Glu Asn Tyr Asn Arg Gln Lys 210 215 220
Lys His Ile Ser Glu Tyr Ser Asn His cys Val Lys Trp Tyr Asn Ser 225 230 235 240
Gly Leu Ser Arg Leu Asn Gly ser Thr Tyr Glu Gln Trp Ile Asn Tyr
245 250 255
Asn Arg Phe Arg Arg Glu Met Ile Leu Met Val Leu Asp Ile Ala Ala
260 265 270
Val Phe Pro Ile Tyr Asp Pro Arg Met Tyr Ser Met Glu Thr ser Thr
275 280 285
Gln Leu Thr Arg Glu Val Tyr Thr Asp Pro Ile ser Leu Ser Ile ser 290 295 300
Asn Pro Asp Ile Gly Pro Ser Phe Ser Gln Met Glu Asn Thr Ala Phe 305 310 315 320
Arg Thr Pro His Leu Val Asp Tyr Leu Asp Glu Leu Tyr Ile Tyr Thr
325 330 335
Ser Lys Tyr Lys Ala Phe Ser His Glu Ile Gln Pro Asp Leu Phe Tyr
340 345 350
Trp cys Val His Lys Val Ser Phe Lys Lys Ser Glu Gln ser Asn Leu
355 360 365
Tyr Thr Thr Gly Ile Tyr Gly Lys Thr Ser Gly Tyr Ile ser Ser Gly 370 375 380
Ala Tyr Ser Phe Arg Gly Asn Asp Ile Tyr Arg Thr Leu Ala Ala Pro 385 390 395 400 ser Val Val Val Tyr Pro Tyr Thr Gln Asn Tyr Gly Val Glu Gln Val
405 410 415
Glu Phe Tyr Gly Val Lys Gly His Val His Tyr Arg Gly Asp Asn Lys
420 425 430
Tyr Asp Leu Thr Tyr Asp Ser Ile Asp Gln Leu Pro pro Asp Gly Glu
435 440 445
pro Ile His Glu Lys Tyr Thr His Arg Leu cys His Ala Thr Ala Ile 450 455 460
Ser Lys Ser Thr Pro Asp Tyr Asp Asn Ala Thr Ile Pro Ile Phe Ser 465 470 475 480
Trp Thr His Arg ser Ala Glu Tyr Tyr Asn Arg Ile Tyr Pro Asn Lys
485 490 495 Ile Lys Lys Ile Pro Ala Val Lys Met Tyr Lys Leu Asp Asp Leu Ser
500 505 510
Thr Val Val Lys Gly Pro Gly Phe Thr Gly Gly Asp Leu Val Lys Arg
515 520 525
Gly Ser Asn Gly Tyr Ile Gly Asp Ile Lys Ala Thr Val Asn Ser Pro 530 535 540
Leu Ser Gln Lys Tyr Arg Val Arg Val Arg Tyr Ala Thr Ser Val Ser 545 550 555 560
Gly Leu Phe Asn Val Phe Ile Asn Asp Glu Ile Ala Leu Gln Lys Asn
565 570 575
Phe Gln Ser Thr val Glu Thr Ile Gly Glu Gly Lys Asp Leu Thr Tyr
580 585 590
Gly ser Phe Gly Tyr Ile Glu Tyr Ser Thr Thr Ile Gln Phe Pro Asn
595 600 605
Glu His Pro Lys Ile Thr Leu His Leu Asn His Leu ser Asn Asn Ser 610 615 620
Pro Phe Tyr Val Asp Ser Ile Glu Phe Ile Pro Val Asp Val Asn Tyr 625 630 635 640
Asp Glu Lys Glu Lys Leu Glu Lys Ala Gln Lys Ala Val Asn Thr Leu
6t5 650 655 Phe Thr Glu Gly Arg Asn Ala Leu Gln Lys Tyr Val Thr Asp Tyr Lys 660 665 670
Val Asp Gln Val Ser Ile Leu Val Asp Cys Ile Ser Gly Asp Leu Tyr
675 680 685
Pro Asn Glu Lys Arg Glu Leu Gln Asn Leu Val Lys Tyr Ala Lys Arg 690 695 700
Leu Ser Tyr Ser Arg Asn Leu Leu Leu Asp Pro Thr Phe Asp Ser Ile 705 710 715 720
Asn Ser Ser Glu Glu Asn Gly Trp Tyr Gly ser Asn Gly Ile Val Ile
725 730 735
Gly Asn Gly Asp Phe Val Phe Lys Gly Asn Tyr Leu Ile Phe Ser Gly
740 745 750
Thr Asn Asp Thr Gln Tyr Pro Thr Tyr Leu Tyr Gln Lys Ile Asp Glu
755 760 765
Ser Lys Leu Lys Glu Tyr Ser Arg Tyr Lys Leu Lys Gly Phe Ile Glu 770 775 780
Ser Ser Gln Asp Leu Glu Ala Tyr Val Ile Arg Tyr Asp Ala Lys His 785 790 795 800
Arg Thr Leu Asp Val Ser Asp Asn Leu Leu Pro Asp Ile Leu Pro Glu
805 810 815
Asn Thr Cys Gly Glu Pro Asn Arg cys Ala Ala Gln Gln Tyr Leu Asp
820 825 830
Glu Asn Pro Ser ser Glu Cys Ser ser Met Gln Asp Gly Ile Leu Ser
835 840 845
Asp Ser His Ser Phe Ser Leu Asn Ile Asp Thr Gly Ser Ile Asn His 850 855 860
Asn Glu Asn Leu Gly Ile Trp Val Leu Phe Lys Ile Ser Thr Leu Glu 865 870 875 880
Gly Tyr Ala Lys Phe Gly Asn Leu Glu Val Ile Glu Asp Gly Pro Val
885 890 895 Ile Gly Glu Ala Leu Ala Arg Val Lys Arg Gln Glu Thr Lys Trp Arg
900 905 910
Asn Lys Leu Ala Gln Met Thr Thr Glu Thr Gln Ala Ile Tyr Thr Arg
915 920 925
Ala Lys Gln Ala Leu Asp Asn Leu Phe Ala Asn Ala Gln Asp Ser His 930 935 940
Leu Lys Ile Asp Val Thr Phe Ala Glu Ile Ala Ala Ala Arg Lys Ile 945 950 955 960
Val Gln Ser Ile Arg Glu Val Tyr Met Ser Trp Leu Ser Val Val Pro
965 970 975
Gly Val Asn His Pro Ile Phe Thr Glu Leu Ser Gly Arg Val Gln Arg
980 985 990
Ala Phe Gln Leu Tyr Asp Val Arg Asn Val Val Arg Asn Gly Arg Phe
995 1000 1005
Leu Asn Gly Leu Ser Asp Trp Ile Val Thr Ser Asp Val Asn Val Gln 1010 1015 1020
Glu Glu Asn Gly Asn Asn Val Leu Val Leu Asn Asn Trp Asp Ala Gln 1025 1030 1035 1040
Val Leu Arg Asn Val Lys Leu Tyr Gln Asp Arg Gly Tyr Val Leu Arg
1045 1050 1055
Val Thr Ala Arg Lys Ile Gly Ile Gly Glu Gly Tyr Ile Thr Ile Thr
1060 1065 1070
Asp Glu Glu Gly His Thr Asp Gln Leu Arg Phe Thr Ala Cys Glu Glu
1075 1080 1085
Ile Asp Ala Ser Asn Ala Phe Ile ser Gly Tyr Ile Thr Lys Glu Leu 1090 1095 1100 Glu Phe Phe Pro Asp Thr Glu Lys Val His Ile Glu Ile Gly Glu Thr 1105 1110 1115 1120
Glu Gly Ile Phe Leu Val Glu ser Ile Glu Leu Phe Leu Met Glu Glu
1125 1130 1135
Leu Cys
(2) INFORMATION FOR SEQ ID NO:3:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 3414 base pairs
(B) TYPE: nucleic acid
(C) STRANDEDNESS: double
(D) TOPOLOGY: linear
(ii) MOLECULE TYPE: DNA (genomic)
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: NO
(vi) ORIGINAL SOURCE:
(A) ORGANISM: Bacillus thuringiensis
(B) STRAIN: kumamotoensis
(C) INDIVIDUAL ISOLATE: HD867
(vii) IMMEDIATE SOURCE:
(A) LIBRARY: Lamdagem (TM)-11 library of J.M. Fu
(B) CLONE: 867
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:3:
ATGAATTTAA ATAATTTAGG TGGATATGAA GATAGTAATA GAACATTAAA TAATTCTCTC 60
AATTATCCTA CTCAAAAAGC ATTATCACCA TCATTAAAGA ATATGAACTA CCAGGATTTT 120
TTATCTATAA CTGAGAGGGA ACAGCCTGAA GCACTCGCTA GTGGTAATAC AGCTATTAAT 180
ACTGTAGTTA GTGTTACAGG GGCTACACTA AGTGCGTTAG GTGTCCCAGG TGCAAGTTTT 240
ATCACTAACT TTTACCTGAA AATTACAGGC CTTTTATGGC CACACGATAA AAATATTTGG 300
GATGAATTTA TGACAGAAGT AGAAACACTT ATTGAACAAA AAATAGAACA ATATGCAAGG 360
AATAAAGCAC TTGCAGAATT AGAGGGATTA GGAAATAACT TAACGATATA TCAACAGGCA 420
CTTGAAGATT GGCTGAACAA TCCTGATGAT CCAGCAACTA TAACACGAGT GATAGATCGT 480
TTTCGTATAT TAGATGCTTT ATTTGAATCA TATATGCCGT CATTTAGGGT TGCTGGATAT 540
GAAATACCAT TACTAACAGT TTACGCACAA GCGGCAAACC TTCATCTAGC TTTATTAAGA 600
GATTCTACTC TTTATGGAGA TAAATGGGAA TTCACTCAGA ACAACATTGA GGAAAATTAT 660
AATCGTCAAA AGAAACATAT TTCTGAATAT TCTAACCATT GCGTTAAGTG GTATAATAGT 720
GGTCTTAGCA GATTGAACGG TTCCACTTAT GAACAATGGA TAAATTATAA TCGTTTTCGT 780
AGAGAAATGA TATTAATGGT ATTAGATATT GCTGCTGTAT TTCCTATTTA TGACCCTCGA 840
ATGTATTCAA TGGAAACAAG TACGCAGTTA ACGAGAGAAG TGTATACCGA TCCAATTAGC 900
TTGTCAATTA GCAATCCAGG TATAGGTCCA AGTTTTTCTC AGATGGAAAA TACTGCGATT 960
AGAACACCAC ACCTTGTTGA TTATTTAGAT GAGCTTTATA TATATACATC AAAATATAAA 1020
GCATTTTCAC ATGAGATTCA ACCAGACCTA TTTTATTGGA GTGCACATAA GGTTAGCTTT 1080
AAACAATCGG AGCAATCCAA TTTATATACA ACAGGCATAT ATGGTAAAAC AAGTGGATAT 1140
ATTTCATCAG GGGCATATTC ATTTAGAGGT AATGATATCT ATAGAACATT AGCAGCTCCA 1200
TCAGTTGTAG TTTATCCGTA TACTCAGAAT TATGGTGTCG AGCAAGTTGA GTTTTACGGT 1260
GTAAAAGGGC ACGTACATTA TAGAGGAGAT AACAAATATG ATCTGACGTA TGATTCTATT 1320
GATCAATTAC CCCCAGACGG AGAACCAATA CACGAAAAAT ACACTCATCG ATTATGTCAT 1380
GCTACAGCTA TATCTAAATC AACTCCGGAT TATGATAATG CTACTATCCC GATCTTTTCT 1440
TGGACGCATA GAAGTGCGGA GTATTACAAT AGAATCTATC CAAACAAAAT CACAAAAATT 1500 CCAGCTGTAA AAATGTATAA ACTAGGTGAT ACATCTACAG TTGTCAAAGG GCCTGGATTT 1560
ACAGGTGGAG ATTTAGTTAA GAGAGGGAGT AATGGTTATA TAGGAGATAT AAAGGCTACC 1620
GTAAACTCAC CACTTTCTCA AAATTATCGT GTTAGAGTTC GATACGCCAC TAATGTTTCT 1680
GGACAATTCA ACGTGTATAT TAATGATAAA ATAACGCTTC AAAGAAAGTT TCAAAATACT 1740
GTAGAAACAA TAGGTGAAGG AAAAGATTTA ACCTATGGTT CATTTGGATA TATAGAATAT 1800
TCTACGACCA TTCAATTTCC GGATAAGCAT CCAAAAATCA CTCTTCATTT AAGTGATTTG 1860
AGTAACAATT CATCATTTTA TGTAGATTCA ATCGAATTTA TCCCTGTAGA TGTAAATTAT 1920
GATGAAAAAG AAAAACTAGA AAAAGCACAG AAAGCCGTGA ATACCTTGTT TACAGAGGGA 1980
AGAAATGCAC TCCAAAAAGA CGTGACAGAT TATAAAGTGG ACCAGGTTTC AATTTTAGTG 2040
GATTGTATAT CAGGGGATTT ATATCCCAAT GAGAAACGCG AACTACAAAA TCTAGTCAAA 2100
TACGCAAAAC GTTTGAGCTA TTCCCGTAAT TTACTTCTAG ATCCAACATT CGATTCTATT 2160
AATTCATCTG AGGAGAATGG TTGGTATGGA AGTAATGGTA TTGTGATTGG AAATGGGGAT 2220
TTTGTATTCA AAGGTAACTA TTTAATTTTT TCAGGTACCA ATGATACACA ATATCCAACA 2280
TATCTCTACC AAAAAATAGA TGAATCCAAA CTCAAAGAAT ATACACGCTA TAAACTGAAA 2340
GGTTTTATCG AAAGTAGTCA GGATTTAGAA GCTTATGTGA TTCGCTATGA TGCAAAACAT 2400
AGAACATTGG ATGTTTCTGA TAATCTATTA CCAGATATTC TCCCTGAGAA TACATGTGGA 2460
GAACCAAATC GCTGCGCGGC ACAACAATAC CTGGATGAAA ATCCAAGTTC AGAATGTAGT 2520
TCGATGCAAG ATGGAATTTT GTCTGATTCG CATTCATTTT CTCTTAATAT AGATATAGGT 2580
TCTATTAATC ACAATGAGAA TTTAGGAATT TGGGTGTTGT TTAAAATTTC GACACTAGAA 2640
GGATATGCGA AATTTGGAAA TCTAGAAGTG ATTGAAGATG GCCCAGTTAT TGGAGAAGCA 2700
TTAGCCCGTG TGAAACGCCA AGAAACGAAG TGGAGAAACA AGTTAGCCCA ACTGACAACG 2760
GAAACACAAG CGATTTATAC ACGAGCAAAA CAAGCGCTGG ATAATCTTTT TGCGAATGCA 2820
CAAGACTCTC ACTTAAAAAT AGATGTTACA TTTGCGGAAA TTGCGGCTGC AAGAAAGATT 2880
GTCCAATCAA TACGCGAAGC GTATATGTCA TGGTTATCTG TTGTTCCAGG TGTAAATCAC 2940
CCTATTTTTA CAGAGTTAAG TGAGCGAGTA CAACGAGCAT TTCAATTATA TGATGTACGA 3000
AATGTTGTGC GTAATGGTCG ATTCCTCAAT GGCTTATCCG ATTGGATTGT AACATCTGAC 3060
GTAAAGGTAC AAGAAGAAAA TGGGAATAAC GTATTAGTTC TTAACAATTG GGATGCACAA 3120
GTATTACAAA ACGTAAAACT CTATCAAGAC CGTGGGTATA TCTTACGTGT AACAGCGCGC 3180
AAGATAGGAA TTGGGGAAGG ATATATAACG ATTACGGATG AAGAAGGGCA TACAGTTCAA 3240
TTGAGATTTA CTGCATGTGA AGTGATTGAT GCATCTAATG CGTTTATATC CGGTTATATT 3300
ACAAAAGAAC TGGAATTCTT CCCAGATACA GAGAAAGTGC ATATAGAAAT AGGCGAAACA 3360
GAAGGAATAT TCCTGGTAGA AAGTATAGAG TTATTTTTGA TGGAAGAGCT ATGT 3414
(2) INFORMATION FOR SEQ ID NO: 4:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 1138 amino acids
(B) TYPE: amino acid
(C) STRANDEDNESS : single
(D) TOPOLOGY: linear
(ii) MOLECULE TYPE: protein
(iii) HYPOTHETICAL: YES
(iv) ANTI-SENSE: NO
(vi) ORIGINAL SOURCE:
(A) ORGANISM: Bacillus thuringiensis
(B) STRAIN: kumamotoensis
(C) INDIVIDUAL ISOLATE: HD867 (vii) IMMEDIATE SOURCE:
(A) LIBRARY: Lamdagem (TM)-11 library of J.M. Fu
(B) CLONE: 867
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:4:
Met Asn Leu Asn Asn Leu Gly Gly Tyr Glu Asp Ser Asn Arg Thr Leu 1 5 10 15
Asn Asn ser Leu Asn Tyr Pro Thr Gln Lys Ala Leu ser Pro Ser Leu
20 25 30
Lys Asn Met Asn Tyr Gln Asp Phe Leu ser Ile Thr Glu Arg Glu Gln
35 40 45
Pro Glu Ala Leu Ala Ser Gly Asn Thr Ala Ile Asn Thr Val Val Ser 50 55 60
Val Thr Gly Ala Thr Leu Ser Ala Leu Gly Val Pro Gly Ala ser Phe 65 70 75 80 Ile Thr Asn Phe Tyr Leu Lys Ile Thr Gly Leu Leu Trp Pro His Asn
85 90 95
Lys Asn Ile Trp Asp Glu Phe Met Thr Glu val Glu Thr Leu Ile Glu
100 105 110
Gln Lys Ile Glu Gln Tyr Ala Arg Asn Lys Ala Leu Ala Glu Leu Glu
115 120 125
Gly Leu Gly Asn Asn Leu Thr Ile Tyr Gln Gln Ala Leu Glu Asp Trp 130 135 140
Leu Asn Asn Pro Asp Asp Pro Ala Thr Ile Thr Arg Val Ile Asp Arg 145 151) 155 160
Phe Arg Ile Leu Asp Ala Leu Phe Glu Ser Tyr Met Pro Ser Phe Arg
165 170 175
Val Ala Gly Tyr Glu Ile Pro Leu Leu Thr Val Tyr Ala Gln Ala Ala
180 185 190
Asn Leu His Leu Ala Leu Leu Arg Asp Ser Thr Leu Tyr Gly Asp Lys
195 200 205
Trp Gly Phe Thr Gln Asn Asn Ile Glu Glu Asn Tyr Asn Arg Gln Lys 210 215 220
Lys His Ile Ser Glu Tyr Ser Asn His Cys Val Lys Trp Tyr Asn Ser 225 230 235 240
Gly Leu ser Arg Leu Asn Gly Ser Thr Tyr Glu Gln Trp Ile Asn Tyr
245 250 255
Asn Arg Phe Arg Arg Glu Met Ile Leu Met Val Leu Asp Ile Ala Ala
260 265 270
Val Phe Pro Ile Tyr Asp Pro Arg Met Tyr Ser Met Glu Thr Ser Thr
275 280 285
Gln Leu Thr Arg Glu Val Tyr Thr Asp Pro Ile Ser Leu Ser Ile Ser 290 295 300
Asn Pro Asp Ile Gly Pro ser Phe Ser Gln Met Glu Asn Thr Ala Phe 305 310 315 320
Arg Thr Pro His Leu Val Asp Tyr Leu Asp Glu Leu Tyr Ile Tyr Thr
325 330 335
Ser Lys Tyr Lys Ala Phe ser His Glu Ile Gln Pro Asp Leu Phe Tyr
340 345 350
Trp Cys Val His Lys Val ser Phe Lys Lys Ser Glu Gln Ser Asn Leu
355 360 365
Tyr Thr Thr Gly Ile Tyr Gly Lys Thr ser Gly Tyr Ile ser Ser Gly 370 375 380
Ala Tyr ser Phe Arg Gly Asn Asp Ile Tyr Arg Thr Leu Ala Ala Pro 385 390 395 400
Ser Val Val Val Tyr Pro Tyr Thr Gln Asn Tyr Gly Val Glu Gln Val
405 410 415 Glu Phe Tyr Gly Val Lys Gly His Val His Tyr Arg Gly Asp Asn Lys 420 425 430
Tyr Asp Leu Thr Tyr Asp Ser Ile Asp Gln Leu Pro Pro Asp Gly Glu
435 440 445
Pro Ile His Glu Lys Tyr Thr His Arg Leu Cys His Ala Thr Ala Ile 450 455 460
ser Lys Ser Thr Pro Asp Tyr Asp Asn Ala Thr Ile Pro Ile Phe Ser 465 470 475 480
Trp Thr His Arg Ser Ala Glu Tyr Tyr Asn Arg Ile Tyr Pro Asn Lys
485 490 495 Ile Lys Lys Ile Pro Ala Val Lys Met Tyr Lys Leu Asp Asp Leu Ser
500 505 510
Thr Val Val Lys Gly Pro Gly Phe Thr Gly Gly Asp Leu Val Lys Arg
515 520 525
Gly Ser Asn Gly Tyr Ile Gly Asp Ile Lys Ala Thr Val Asn Ser Pro 530 535 540
Leu Ser Gln Lys Tyr Arg Val Arg Val Arg Tyr Ala Thr Ser Val ser 545 550 555 560
Gly Leu Phe Asn Val Phe Ile Asn Asp Glu Ile Ala Leu Gln Lys Asn
565 570 575
Phe Gln Ser Thr Val Glu Thr Ile Gly Glu Gly Lys Asp Leu Thr Tyr
580 585 590
Gly Ser Phe Gly Tyr Ile Glu Tyr Ser Thr Thr Ile Gln Phe Pro Asn
595 600 605
Glu His Pro Lys Ile Thr Leu His Leu Asn His Leu Ser Asn Asn Ser 610 615 620
Pro Phe Tyr Val Asp Ser Ile Glu Phe Ile Pro Val Asp Val Asn Tyr 625 630 635 640
Asp Glu Lys Glu Lys Leu Glu Lys Ala Gln Lys Ala Val Asn Thr Leu
645 650 655
Phe Thr Glu Gly Arg Asn Ala Leu Gln Lys Tyr Val Thr Asp Tyr Lys
660 665 670
Val Asp Gln Val Ser Ile Leu Val Asp Cys Ile Ser Gly Asp Leu Tyr
675 680 685
Pro Asn Glu Lys Arg Glu Leu Gln Asn Leu Val Lys Tyr Ala Lys Arg 690 695 700
Leu Ser Tyr Ser Arg Asn Leu Leu Leu Asp Pro Thr Phe Asp Ser Ile 705 710 715 720
Asn Ser Ser Glu Glu Asn Gly Trp Tyr Gly Ser Asn Gly Ile Val Ile
725 730 735
Gly Asn Gly Asp Phe Val Phe Lys Gly Asn Tyr Leu Ile Phe Ser Gly
746 745 750
Thr Asn Asp Thr Gln Tyr Pro Thr Tyr Leu Tyr Gln Lys Ile Asp Glu
755 760 765
Ser Lys Leu Lys Glu Tyr Ser Arg Tyr Lys Leu Lys Gly Phe Ile Glu 770 775 780
Ser Ser Gln Asp Leu Glu Ala Tyr Val Ile Arg Tyr Asp Ala Lys His 785 790 795 800
Arg Thr Leu Asp Val Ser Asp Asn Leu Leu Pro Asp Xaa Leu Pro Glu
805 810 815
Asn Thr Cys Gly Glu Pro Asn Arg Cys Ala Ala Gln Gln Tyr Leu Asp
820 825 830
Glu Asn Pro Ser Ser Glu Cys Ser Ser Met Gln Asp Gly Ile Leu Ser
835 840 845
Asp Ser His ser Phe Ser Leu Asn Ile Asp Thr Gly Ser Ile Asn His 850 855 861 Asn Glu Asn Leu Gly Ile Trp Val Leu Phe Lys Ile Ser Thr Leu Glu 865 870 875 880
Gly Tyr Ala Lys Phe Gly Asn Leu Glu Val Ile Glu Asp Gly Pro Val
885 890 895 Ile Gly Glu Ala Leu Ala Arg Val Lys Arg Gln Glu Thr Lys Trp Arg
900 905 910
Asn Lys Leu Ala Gln Met Thr Thr Glu Thr Gln Ala Ile Tyr Thr Arg
915 920 925
Ala Lys Gln Ala Leu Asp Asn Leu Phe Ala Asn Ala Gln Asp Ser His 930 935 940
Leu Lys Ile Asp Val Thr Phe Ala Glu Ile Ala Ala Ala Arg Lys Ile 945 950 955 960 val Gln Ser Ile Arg Glu Xaa Xaa Met ser Trp Leu Ser Val Val Pro
965 970 975
Gly Val Asn His Pro Ile Phe Thr Glu Leu Ser Gly Arg Val Gln Arg
980 985 990
Ala Phe Gln Leu Tyr Asp Val Arg Asn Val Val Arg Asn Gly Arg Phe
995 1000 1005
Leu Asn Gly Leu Ser Asp Trp Ile Val Thr Ser Asp Val Asn Val Gln 1010 1015 1020
Glu Glu Asn Gly Asn Asn Val Leu Val Leu Asn Asn Trp Asp Ala Gln 1025 1030 1035 1040 val Leu Arg Asn Val Lys Leu Tyr Gln Asp Arg Gly Tyr Val Leu Arg
1045 1050 1055
Val Thr Ala Arg Lys Ile Gly Ile Gly Glu Gly Tyr Ile Thr Ile Thr
1060 1055 1070
Asp Glu Glu Gly His Thr Asp Gln Leu Arg Phe Thr Ala cys Glu Glu
1075 1080 1085
Ile Asp Ala Ser Asn Ala Phe Ile Ser Gly Tyr Ile Thr Lys Glu Leu 1050 1095 1100
Glu Phe Phe Pro Asp Thr Glu Lys Val His Ile Glu Ile Gly Glu Thr 1105 1110 1115 1120
Glu Gly Ile Phe Leu Val Glu Ser Ile Glu Leu Phe Leu Met Glu Glu
1125 1130 1135
Leu Cys

Claims

Claims 1. A method for controlling a coleopteran insect pest which comprises contacting said insect pest with an insect-controlling effective amount of a Bacillus thuringiensis microbe or toxin selected from the group consisting of B.t. HD511, B.t. HD867 and B.t. HD1011, or variants thereof, and toxins obtainable from said microbes.
2. The method, according to claim 1, wherein said microbe is B.t. HD511.
3. The method, according to claim 1, wherein said microbe is B.t. HD867.
4. The method, according to claim 1, wherein said microbe is B.t. HD1011.
5. The method, according to claim 1, wherein the coleopteran pest is the Colorado potato beetle.
6. A composition of matter comprising a Bacillus thuringiensis microbe, or toxin, selected from the group consisting of B.t.. HD511, B.t.. HD867, B.t.. HD1011, variants of these isolates, toxins obtainable from these isolates, and microbes transformed with genes obtainable from these isolates; in association with an insecticide carrier.
7. The composition of matter, according to claim 6, wherein said carrier comprises beetle phagostimulants or attractants.
8. A toxin active against a coleopteran pest, wherein said toxin is either obtainable from a Bacillus thuringiensis microbe selected from the group consisting of B.t. HD511, B.t. HD867 and B.t. HD1011, and variants thereof, or comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO. 2 or SEQ ID NO. 4.
9. The toxin, according to claim 8, wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence shown in SEQ ID NO. 2.
10. The toxin, according to claim 8, wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence shown in SEQ ID NO. 4.
11. A nucleotide sequence comprising DNA encoding a Bacillus thuringiensis toxin active against coleopteran pests, wherein said DNA is either obtainable from a Bacillus thuringiensis microbe selected from the group consisting of B.t. HD511, B.t. HD867, and B.t. HD1011, and variants thereof, or encodes a toxin wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO. 2 or SEQ ID NO. 4.
12. The nucleotide sequence, according to claim 11, wherein said DNA encodes a Bacillus thuringiensis toxin having essentially the amino acid sequence shown in SEQ ID NO. 2.
13. The nucleotide sequence, according to claim 12, wherein said DNA has essentially the sequence shown in SEQ ID NO. 1.
14. The nucleotide sequence, according to claim 11, wherein said DNA encodes a Bacillus thuringiensis toxin having essentially the amino acid sequence shown in SEQ ID NO. 4.
15. The nucleotide sequence, according to claim 12, wherein said DNA has essentially the sequence shown in SEQ ID NO. 3.
16. A bacterial or plant host transformed to express a Bacillus thuringiensis toxin active against coleopteran pests wherein, said toxin is encoded by DNA which is either obtainable from a Bacillus thuringiensis microbe selected from the group consisting of B.t. HD511, B.t. HD867, and B.t. HD1011, and variants thereof, or encodes a toxin wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO.2 or SEQ ID NO.4.
17. The bacterial host, according to claim 16, which is a species of Pseudomonas, Azotobacter, Erwinia, Serratia, Klebsiella, Rhizobium, Bacillus, Streptomyces, Rhodopseudomonas, Methylophilius, Agrobacterium, Acetobacter, or Alcaligenes.
18. The bacterial host, according to claim 17, wherein said bacterium is pigmented and phylloplane adherent
19. The bacterial or plant host, according to claim 16, wherein said host is transformed with a nucleotide sequence comprising DNA encoding a toxin having an amino acid sequence which essentially the amino acid sequence shown in SEQ ID NO. 2.
20. The bacterial or plant host, according to claim 16, wherein said host is transformed with a nucleotide sequence comprising DNA encoding a toxin having an amino acid sequence which is essentially the amino acid sequence shown in SEQ ID NO. 4.
21. An insecticidal composition comprising insecticide containing substantially intact, treated cells having prolonged pesticidal activity when applied to the environment of a target pest, wherein said insecticide is a polypeptide toxic to coleopteran insects and is produced as a result of expression of a transformed microbe capable of expressing a Bacillus thuringiensis toxin active against coleopteran pests wherein said toxin is encoded by a nucleotide sequence which is either obtainable from a Bacillus thuringiensis microbe selected from the group consisting of B.t. HD511, B.t. HD867, and B.t.. HD1011, and variants thereof, or encodes a toxin wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO. 2 or SEQ ID NO. 4.
22. The insecticidal composition, according to claim 21, wherein said treated cells are treated by chemical or physical means to prolong the insecticidal activity in the environment.
23. Treated, substantially intact unicellular microorganism cells containing an intracellular toxin, which toxin is a result of expression of nucleotide sequence which encodes a polypeptide toxin active against coleopteran pests wherein said nucleotide sequence is either obtainable from a Bacillus thuringiensis microbe selected from the group consisting of B.t. HD511, B.t. HD867 and B.t. HD1011, and variants thereof, or encodes a toxin wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO. 2 or SEQ ID NO.4; wherein said cells are treated under conditions which prolong the insecticidal activity when said cells are applied to the environment of a target insect.
24. A method for controlling a coleopteran insect pest, said method comprising exposing said pest to a plant transformed by a nucleotide sequence comprising DNA encoding a coleopteran-active Bacillus thuringiensis toxin, wherein said nucleotide sequence is either obtainable from a Bacillus thuringiensis isolate selected from the group consisting of B.t. HD511, B.t. HD867 and B.t.. HD1011, and variants thereof, or encodes a toxin wherein said toxin comprises an amino acid sequence which is essentially the amino acid sequence of SEQ ID NO. 2 or SEQ ID NO. 4.
PCT/US1992/009510 1991-11-06 1992-11-06 Novel coleopteran-active bacillus thuringiensis isolates and genes encoding coleopteran-active toxins WO1993008693A1 (en)

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AT92925087T ATE206283T1 (en) 1991-11-06 1992-11-06 NEW COLEOPTERENACTIVE ISOLATE OF BACILLUS THURINGIENSIS AND GENES CODING FOR COLEOPTERENACTIVE TOXINS
EP92925087A EP0612218B1 (en) 1991-11-06 1992-11-06 NOVEL COLEOPTERAN-ACTIVE $i(BACILLUS THURINGIENSIS) ISOLATES AND GENES ENCODING COLEOPTERAN-ACTIVE TOXINS
BR9206716A BR9206716A (en) 1991-11-06 1992-11-06 New isolates of active bacillus thuringiensis for beetles and genes encoding active toxins for beetles
JP5508716A JPH07501323A (en) 1991-11-06 1992-11-06 Novel coleopteran-active Bacillus thuringiensis isolates and genes encoding coleopteran-active toxins
DK92925087T DK0612218T3 (en) 1991-11-06 1992-11-06 Newly known coleoptera-active isolates from Bacillus thuringiensis as well as genes encoding coleoptera-active toxins
AU31278/93A AU666692B2 (en) 1991-11-06 1992-11-06 Novel coleopteran-active (bacillus thuringiensis) isolates and genes encoding coleopteran-active toxins
DE69232098T DE69232098T2 (en) 1991-11-06 1992-11-06 NEW KOLEOPTERENACTIVE ISOLAT FROM BACILLUS THURINGIENSIS AND GENES THAT ENCODE KOLEOPTERENACTIVE TOXINE

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US07/788,638 1991-11-06
US07/788,638 US5262324A (en) 1991-11-06 1991-11-06 Coleopteran-active Bacillus thuringiensis isolates and genes encoding coleopteran-active toxins

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CA (1) CA2117268A1 (en)
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CA2117268A1 (en) 1993-05-13
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US5286486A (en) 1994-02-15
US5262324A (en) 1993-11-16
DK0612218T3 (en) 2002-01-21
ATE206283T1 (en) 2001-10-15
AU666692B2 (en) 1996-02-22
EP0612218B1 (en) 2001-10-04
US5306494A (en) 1994-04-26
DE69232098T2 (en) 2002-05-16
ES2162799T3 (en) 2002-01-16
JPH07501323A (en) 1995-02-09
DE69232098D1 (en) 2001-11-08
EP0612218A1 (en) 1994-08-31

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