WO2019241370A1 - Compositions et procédés d'amélioration de la santé des plantes et de lutte contre les maladies des plantes - Google Patents

Compositions et procédés d'amélioration de la santé des plantes et de lutte contre les maladies des plantes Download PDF

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Publication number
WO2019241370A1
WO2019241370A1 PCT/US2019/036744 US2019036744W WO2019241370A1 WO 2019241370 A1 WO2019241370 A1 WO 2019241370A1 US 2019036744 W US2019036744 W US 2019036744W WO 2019241370 A1 WO2019241370 A1 WO 2019241370A1
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WO
WIPO (PCT)
Prior art keywords
acre
bacterial strain
active variant
fenhexamid
plant
Prior art date
Application number
PCT/US2019/036744
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English (en)
Inventor
Lee J. Simmons
Original Assignee
AgBiome, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AgBiome, Inc. filed Critical AgBiome, Inc.
Publication of WO2019241370A1 publication Critical patent/WO2019241370A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION 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
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
    • A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
    • A01N37/24—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides containing at least one oxygen or sulfur atom being directly attached to the same aromatic ring system
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION 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
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION 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
    • A01N63/00—Biocides, 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
    • A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
    • A01N63/27—Pseudomonas

Definitions

  • the invention relates to bacterial strains and populations for controlling plant disease and/or improving an agronomic trait of interest in a plant.
  • the combination of the ketoreductase inhibitor fungicide (e.g., fenhexamid) with the biocontrol agents listed herein produce at least an additive effect, and in particular embodiments a synergistic effect, that allows for use of a lower amount of the biocontrol agent and/or ketoreductase inhibitor (e.g., fenhexamid) than the suggested or commonly used amount for application.
  • a synergistic effect that allows for use of a lower amount of the biocontrol agent and/or ketoreductase inhibitor (e.g., fenhexamid) than the suggested or commonly used amount for application.
  • lower amounts of biocides can be added to crops in order to increase disease control, reduce chemical residues, reduce pathogen resistance, and increase product usage base acres in multiple crops for the bacterial strain and ketoreductase inhibitor fungicide.
  • compositions comprising a bacterial strain i.e., at least one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof, or a spore or a forespore or a combination of cells, forespores and/or spores, from any one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof
  • a ketoreductase inhibitor fungicide e.g., fenhexamid
  • an agriculturally acceptable carrier i.e., at least one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof.
  • a ketoreductase inhibitor fungicide e.g., fenhexamid
  • active variants of the bacteria identified by such methods will retain the ability to improve at least one agronomic trait when applied with a ketoreductase inhibitor fungicide (e.g.,fenhexamid) to a plant, plant part, or an area of cultivation, including for example, reducing plant disease severity and/or reducing plant disease development.
  • a ketoreductase inhibitor fungicide e.g.,fenhexamid
  • the active variants of the isolated bacterial strain(s) disclosed herein include strain(s) that are closely related to any of the above strains (for example, closely related to AIP1620, AIP050999, and CGA267356) on the basis of 16S rDNA sequence identity. See
  • the bacterial strains provided herein i.e., AIP1620, AIP050999, and CGA267356, or active variant of any thereof, or a spore or a forespore or a combination of cells, forespores and/or spores, from any one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof
  • AIP1620, AIP050999, and CGA267356 can be formulated as a cell paste, wettable powders, a cell pellet, dusts, granules, a slurry, a dry powder, aqueous or oil based liquid products, and the like.
  • Such formulations will comprise the bacteria provided herein or an active variant thereof in addition to carriers and other agents.
  • the formulation will further comprise a ketoreductase inhibitor fungicide
  • the bacterial strain provided herein or an active variant thereof can be mixed with a biocide in addition to fenhexamid, such as a fungicide, insecticide, or herbicide to enhance its activity or the activity of the chemical to which it has been added.
  • a biocide such as a fungicide, insecticide, or herbicide to enhance its activity or the activity of the chemical to which it has been added.
  • the combination of the bacterial strain and chemical may exhibit an additive effect.
  • the combination of the bacterial strain and chemical may show synergistic activity where the mixture of the two exceeds that expected from their simple additive effect.
  • the bacterial strain or active variant thereof is compatible with agricultural chemicals used to improve performance of biocides.
  • agricultural chemicals include safeners, surfactants, stickers, spreaders, UV protectants, and suspension and dispersal aids.
  • Safeners are chemicals that improve or modify the performance of herbicides.
  • Surfactants, spreaders, and stickers are chemicals included in agricultural spray preparations that change the mechanical properties of the spray (for example, by altering surface tension or improving leaf cuticle penetration).
  • UV protectants improve the performance of agricultural biocides by reducing degradation by ultraviolet light.
  • Suspension and dispersal aids improve the performance of biocides by altering their behavior in a spray tank.
  • methods can be undertaken to modify the bacterial strain to impart the compatibility of interest. Such methods to produce modified bacterial strains include both selection techniques and/or transformation techniques.
  • the formulated product that is applied that comprises AIP1620 may have 50% AIP1620 by weight, where AIP1620 is at least 1 x 10 6 CFU/g. Application of 5 lbs/acre of the 50% formulated product comprises 2.5 lbs/acre of the bacterial strain AIP1620.
  • the amount of KIF (e.g., fenhexamid) with AIP1620, or an active variant thereof
  • the amount of KIF can be less than 0.75 lb/acre, such as between about 0.25 lb/acre and 0.74 lb/acre, including but not limited to about 0.25 lb/acre, about 0.3 lb/acre, 0.35 lb/acre, about 0.4 lb/acre, about 0.45 lb/acre, about 0.5 lb/acre, about 0.55 lb/acre, about 0.6 lb/acre, about 0.65 lb/acre, about 0.70 lb/acre, about 0.71 lb/acre, about 0.72 lb/acre, about 0.73 lb/acre, and about 0.74 lb/acre
  • the amount of KIF (e.g., fenhexamid) when applying without AIP1620, or an active variant thereof, can be about 0.75 lb/acre.
  • the effective amount of the presently disclosed combination that is applied comprises about 2.5 lb/acre of the bacterial strain AIP1620, or active variants thereof, and less than 0.75 lb/acre of fenhexamid, such as between about 0.25 lb/acre and 0.74 lb/acre, including but not limited to about 0.25 lb/acre, about 0.3 lb/acre, 0.35 lb/acre, about 0.4 lb/acre, about 0.45 lb/acre, about 0.5 lb/acre, about 0.55 lb/acre, about 0.6 lb/acre, about 0.65 lb/acre, about 0.70 lb/acre, about 0.71 lb/acre, about 0.72 lb/acre, about 0.73 lb/acre, and about 0.74 lb/acre.
  • the effective amount of the presently disclosed combination that is applied comprises about 0.75 lb/acre of fenhexamid, and less than 2.5 lb/acre of the bacterial strain AIP1620, or active variants thereof, such as between about 0.1 lb/acre and 2.49 lb/acre, including but not limited to about 2.49 lb/acre, about 2.45 lb/acre, about 2.4 lb/acre, about 2.3 lb/acre, about 2.2 lb/acre, about 2.1 lb/acre, about 2.0 lb/acre, about 1.9 lb/acre, about 1.8 lb/acre, about 1.7 lb/acre, about 1.6 lb/acre, about 1.5 lb/acre, about 1.4 lb/acre, about 1.3 lb/acre, about 1.2 lb/acre, about 1.1 lb/acre, about 1.0 lb/acre, about 0.9 lb/acre, about 0.8 lb/acre,
  • Phakopsora meibomiae The ASR pathogen is well adapted for long-distance dispersal, because the spores can be readily carried by the wind, making it an ideal means for introduction to new, rust-free regions.
  • the primary means of dissemination are spores, which can be carried by wind or splashed rain. These pathogens are obligate pathogens surviving and reproducing only on live hosts.
  • the first symptoms are light-brown polygonal lesions of 2 to 5 mm on the adaxial leaf surface. These lesions develop into volcano-shaped lesions known as pustules that appear on the abaxial surface of the leaf, where uredospores are produced.
  • in vitro antipathogenic assays include, for example, the addition of varying concentrations of the antipathogenic composition to paper disks and placing the disks on agar containing a suspension of the pathogen of interest. Following incubation, clear inhibition zones develop around the discs that contain an effective concentration of the antipathogenic polypeptide (Liu et al. (1994) Plant Biology 91:1888-1892, herein incorporated by reference). Additionally, microspectrophotometrical analysis can be used to measure the in vitro antipathogenic properties of a composition (Hu et al. (1997) Plant Mol. Biol.34:949-959 and Cammue et al. (1992) J. Biol. Chem.267: 2228-2233, both of which are herein incorporated by reference).
  • the active variant comprises a bacterial strain provided herein that is resistant to glufosinate.
  • a plant, crop, or area of cultivation is treated with an effective amount of a combination of a ketoreductase inhibitor fungicide (e.g., fenhexamid) and a bacterial strain provided herein or active variant thereof that is resistant to glufosinate, and an effective amount of glufosinate, wherein the effective amount of glufosinate is such as to selectively control weeds while the crop is not significantly damaged.
  • a ketoreductase inhibitor fungicide e.g., fenhexamid
  • Fungicides that can be used in the various methods and compositions disclosed herein include aliphatic nitrogen fungicides (butylamine, cymoxanil, dodicin, dodine, guazatine, iminoctadine); amide fungicides (benzovindiflupyr, carpropamid, chloraniformethan, cyflufenamid, diclocymet, diclocymet, dimoxystrobin, fenaminstrobin, fenoxanil, flumetover, furametpyr, isofetamid, isopyrazam, mandestrobin, mandipropamid, metominostrobin, orysastrobin, penthiopyrad, prochloraz, quinazamid, silthiofam, triforine); acylamino acid fungicides (benalaxyl, benalaxyl-M, furalaxyl, metalaxyl, metalaxyl-M, pe
  • composition of embodiment 12, wherein said composition comprises fenhexamid for application at about 0.25 lb/acre to about 0.74 lb/acre.
  • composition comprises fenhexamid for application at about 0.25 lb/acre or about 0.375 lb/acre.
  • a spore at least one of a spore, or a forespore, or a combination of cells, forespores and/or spores from any one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof, wherein the active variant comprises a bacterial strain having a genome within a Mash distance of about 0.015; and
  • said effective amount comprises an amount of at least one of AIP1620, AIP050999, and CGA267356, or an active variant of any thereof, wherein the active variant comprises a bacterial strain having a genome within a Mash distance of about 0.015 that is lower than the suggested application amount.
  • Treatments were established using a modified randomized complete block design, with six replicate plots per treatment. Each replicate plot comprised a single bed measuring 48 in containing two plant rows. Each replicate plot was 20 ft long. A total of eight treatments with six replicates per treatment used 20 ft beds in the trial. The treatments were made by foliar application using a motorized backpack sprayer with a wrap-around full coverage boom which simulates a commercial tractor-mounted boom sprayer for optimal coverage. After the first application, subsequent sprays were made approximately every 14 days throughout the season for a total of 7 applications.

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  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental Sciences (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Virology (AREA)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

L'invention concerne des compositions et des procédés pour le traitement ou la prévention de maladies des plantes. Ces compositions et procédés comprennent une combinaison d'un fongicide inhibiteur de cétoréductase et une souche bactérienne qui lutte contre au moins un pathogène qui provoque une maladie des plantes ou améliore au moins un caractère agronomique d'intérêt dans une plante. La combinaison du fongicide inhibiteur de cétoréductase et de la souche bactérienne peut être utilisée comme inoculant pour des plantes. Par conséquent, l'invention concerne également des procédés de culture d'une plante sensible à une maladie des plantes et des procédés pour lutter contre une maladie des plantes sur une plante sensible à la maladie des plantes.
PCT/US2019/036744 2018-06-12 2019-06-12 Compositions et procédés d'amélioration de la santé des plantes et de lutte contre les maladies des plantes WO2019241370A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862684016P 2018-06-12 2018-06-12
US62/684,016 2018-06-12
US201962848236P 2019-05-15 2019-05-15
US62/848,236 2019-05-15

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WO2019241370A1 true WO2019241370A1 (fr) 2019-12-19

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US5614395A (en) 1988-03-08 1997-03-25 Ciba-Geigy Corporation Chemically regulatable and anti-pathogenic DNA sequences and uses thereof
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US5792931A (en) 1994-08-12 1998-08-11 Pioneer Hi-Bred International, Inc. Fumonisin detoxification compositions and methods
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