Transgenic strains of Pseudomonas for biocontrol of plant root diseases

US6277625A · kind A · utility

Assignees

• The United States of America, as represented by the Secretary of Agriculture · US
• Washington State University Research Foundation · US

Inventors

• Zhengyu Huang · Buffalo Grove, US
• Linda S. Thomashow · Pullman, US
• Dmitri V. Mavrodi · Hattiesburg, US
• Jos Raaijmakers · Rhenen, NL
• David M. Weller · Pullman, US
• R. James Cook · Pullman, US

Key dates

• Filing date: Dec 18, 1997
• Grant date: Aug 21, 2001
• Expiry date: Dec 18, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S435/876
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

Transgenic fluorescent Pseudomonas spp. are described which have a biosynthetic locus which encodes for the production of the antibiotic phenazine-1-carboxylic acid stably introduced into the genome, have a locus which encodes for the production of the antibiotic 2,4-diacetylphloroglucinol, and are effective for control of diseases caused by the soil-borne fungus, Rhizoctonia. Strains are also described which control diseases caused by Gaeumannomyces graminis or Pythium, in addition to Rhizoctonia, or have the ability to control all three diseases.