Biocontrol Agents for Take-all

J.M. Raaijmakers (Inventor), D.M. Weller (Inventor), L.S. Thomashow (Inventor), R.J. Cook (Inventor)

Research output: PatentOther research output

Abstract

Fluorescent Pseudomonas spp. are described which are effective for the control of diseases caused by the soil-borne fungus, Gaeumannomyces graminis (Gg), such as take-all, in small grain crops or turf grass. The subject biocontrol strains have a unique genotype as shown by a characteristic banding pattern, and exhibit root-colonizing ability which is characterized by both higher population density on roots and extended colonizing activity compared to known Gg-suppressive strains. A further property is the ability of a strain to duplicate the level of biocontrol obtained naturally in a take-all decline soil. Methods for isolation and identification of the strains and their use to control diseases caused by Gg are provided. In particular, strains of P. fluorescens NRRL B-21806 and NRRL B-21807.
Original languageEnglish
Patent numberUS6447770
Publication statusPublished - 10 Sep 2002

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