Inhibition ofTilletia laevisTeliospore Germination and Suppression of Common Bunt of Wheat byPseudomonas fluorescens2-79

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1993Publisher:Scientific SocietiesJournal:Plant Disease, volume 77, page 1,012 (issn: 0191-2917,

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Authors: P. S. McManus;

doi: 10.1094/pd-77-1012

Inhibition ofTilletia laevisTeliospore Germination and Suppression of Common Bunt of Wheat byPseudomonas fluorescens2-79

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Abstract

A rifampicin-resistant derivative of Pseudomonas fluorescens strain 2-79 (Pf2-79r) inhibited teliospore germination of Tilletia laevis. A rifampicin-resistant derivative of a spontaneous mutant of strain 2-79 deficient in phenazine-1-carboxylic acid production (2-79PCA - r) had no effect on germination of T. laevis. Inhibition of germination by Pf2-79r was not overcome by supplementing culture media with iron. Common bunt incidence was reduced by 65 and 50% during consecutive seasons when wheat seeds and 2-wk-old seedlings, were treated with Pf2-79r. Similar treatment of seeds and seedlings with 2-79PCA - r afforded no protection against common bunt

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Michigan State University
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