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Synergy-Based Biocontrol of Plant Pathogens

a biocontrol and plant technology, applied in the field of synergy-based biocontrol of plant pathogens, can solve the problems of biocontrol failure, economically important crop disease, etc., and achieve the effects of facilitating plant absorption, strengthening defense, and enhancing plant vigor or growth

Inactive Publication Date: 2017-01-26
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent text is referring to the products made by bacteria of the genus Collimonas or Bacillus. These products can include various substances produced by the bacteria such as anti-fungal agents, anti-oomycetous agents, hydrolases, phytic acid, and other substances that enhance plant growth and defense against pathogens. The technical effect of this patent is providing new methods for developing products that can protect plants from disease and promote plant health.

Problems solved by technology

Many of them cause disease on economically important crops and trees.
During the latter experiment, greenhouse temperatures were higher than in any of the other greenhouse trials; possibly, this was the reason for biocontrol failure in this case.

Method used

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Examples

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example 1

Antifungal and Antioomycete Properties of Collimonas Isoaltes and their Use in Synergy-Based Biocontrol of Fusarium Wilt

I. INTRODUCTION

[0112]The bacterial genus Collimonas (Leveau, J. H., S. Uroz, et al. (2010) Environmental Microbiology 12(2): 281-292) comprises three described species: C. fungivorans, C. pratensis, and C. arenae (de Boer, W., J. H. J. Leveau, et al. (2004) International Journal of Systematic and Evolutionary Microbiology 54: 857-864; Höppener-Ogawa, S., W. de Boer, et al. (2008) International Journal of Systematic and Evolutionary Microbiology 58: 414-419). Collimonads have antifungal (de Boer, W., P. J. A. Klein Gunnewiek, et al. (1998) Soil Biology &Biochemistry 30(2): 193-203; Mela, F., K. Fritsche, et al. (2011) ISME J 5(9): 1494-1504), mycophagous (de Boer, W., P. J. A. Klein Gunnewiek, et al. (2001) Applied and Environmental Microbiology 67(8): 3358-3362), chitinolytic (Leveau, J. H. J., S. Gerards, et al. (2006) Journal of Microbiological Methods 66(2): 276...

example 2

Soil Sample Analysis of Collimonads

[0127]A total of 24 soil samples were analyzed for the presence of collimonads. These samples were taken as triplicates from 8 agricultural fields in California that were planted with tomatoes, almonds, alfalfa, strawberry, wheat, lettuce, onion or carrot. Analysis was performed using an enrichment protocol as described before. In short, one gram from each soil sample was resuspended in 10 mL of 1× Basic Salt Solution (de Boer, W., Klein Gunnewiek, P. J. A., Lafeber, P., Janse, J. D., Spit, B. E., Woldendorp, J. W., 1998, Anti-fungal properties of chitinolytic dune soil bacteria. Soil Biology and Biochemistry. 30,193-203) by vortexing at maximum speed for 45 seconds. One milliliter of each suspension was inoculated into 50 ml of tryptic soy broth (Oxoid) with 50 mg natacid and 30 mg nalidixic acid per liter and incubated at 20° C. for 3 days at 200 rpm, after which a 100-μl aliquot was transferred to 50 mL of chitin broth (modified from de Boer, W....

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Abstract

Methods and compositions are provided for control of pathogenic fungal or oomycetous infection.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This application is a Continuation of U.S. application Ser. No. 14 / 537,620, filed Nov. 10, 2014 which claims priority to U.S. Provisional Application 61 / 902,046, filed Nov. 8, 2013, the contents of which are hereby incorporated in their entirety for all purposes.BACKGROUND OF THE INVENTION[0002]Fungal and oomycetous pathogens can cause significant damage to a wide variety of commercially important plant varieties including crops and ornamental plants. Such pathogens can kill plants, reduce yield, reduce plant strength (e.g., decrease resistance to lodging), cause symptoms of mineral deficiency, and predispose plants to infection by other pathogens. As such, there is great interest in developing compositions and methods for control of fungal and oomycetous pathogens.[0003]Fungal and oomycetous pathogens are typically controlled by use of synthetic chemicals (e.g., fungicides). However, effective synthetic chemicals can be dangerous, toxic...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N63/00A01N63/20
CPCA01N63/00A01N63/20A01N63/22
Inventor LEVEAU, JOHANNES HENRICUS JOSEPHUSDOAN, HUNG KIM
Owner RGT UNIV OF CALIFORNIA
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