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Biocontrol Agents for Take-All
See also: US Patent Office Full Record

Patent Number: 6447770
Docket Number: 2797
Serial Number: 9395861
Date Patented: 09/10/2002

Biocontrol Agents for Take-All

Technology Description:

The invention involves the biocontrol of diseases caused by the soil-borne fungus, Gaeumannomyces graminis. Strains of fluorescent Pseudomonas species can be used to control the disease known as Take-All, which occurs in small grain crops and turf grass. Take-all is prevalent in all wheat-growing regions of the world, and is the most important root disease of wheat, causing significant economic losses by reducing crop yield. The invention has unique root-colonizing ability, making it more effective that previous biocontrols of G. graminis. The unique biocontrol strains of the invention can be applied as a seed coating or directly to soil as a liquid spray or dry formulation to control plant disease caused by G. graminis. Symptoms of wheat Take-All include dark longitudinal lesions on roots. The entire root may become blackened with disease and the fungus can migrate to the crown of the wheat plant and the stems.

Reference:

Please refer to Patent Number 6,447,770, which issued on September 10, 2002.

Inventors:

David M. Weller
Root Disease and Biological
  Control Research
Pullman, WA  99164-6430
wellerd@mail.wsu.edu
Linda S. Thomashow
(Same as first inventor)
(509) 335-0930 / Fax: (509) 335-7674
thomasho@mail.wsu.edu
R. James Cook
(Formerly with ARS)
(509) 335-3722 / Fax: (509) 335-7674
rjcook@wsu.edu
Jos M. Raaijmakers
Netherlands

 

 

 
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