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US 6,673,746 B1Granted
Virulence enhancement of bioherbicides
AssigneeAg/Bio Con, Inc.
InventorsDavid C. Sands, Alice L. Pilgeram, Timothy W. Anderson, Kanat S. Tiourebaev
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AssigneeAg/Bio Con, Inc.
InventorsDavid C. Sands, Alice L. Pilgeram, Timothy W. Anderson, Kanat S. Tiourebaev
Estimating the term…
Disclosed are novel methodologies for virulence enhancement of fungal and bacterial pathogens for biological control of target plants. Described is a selection process for phytopathogenic microorganisms that excrete selected amino acids. Pathogenicity studies demonstrate that these amino acid-excreting plant pathogens show greater virulence against target plants than do corresponding wild type strains. Host range evaluations of these mutants did not reveal any increase of virulence towards non-target plants. This novel approach to enhancement of microbial herbicides can be used across a broad spectrum of microbial groups to improve the efficacy of bio-control. Also disclosed is the use of selected mutants of plant pathogenic microorganisms that overproduce one or more inhibitory amino acids to enhance control of target plants.
An enhanced method of controlling plant growth or propagation, comprising exposing the plant to an amino acid capable of enhancing virulence of a plant pathogen in the presence of the plant pathogen.
A method of controlling plant growth or propagation, comprising exposing the plant to an amino acid capable of enhancing virulence of a plant pathogen in the presence of the plant pathogen, wherein the plant pathogen is not auxotrophic for the amino acid.
A method of controlling plant growth or propagation, comprising exposing the plant to an amino acid capable of enhancing virulence of a plant pathogen in the presence of the plant pathogen, wherein the plant pathogen is viable in the absence of the amino acid but is not virulent enough to control growth or propagation of the plant.
Dependencies are inferred from the claim text.