Fusaric Acid-Producing Strains of <i>Fusarium oxysporum</i> Alter 2,4-Diacetylphloroglucinol Biosynthetic Gene Expression in <i>Pseudomonas fluorescens</i> CHA0 In Vitro and in the Rhizosphere of Wheat

Abstract excerpt

The phytotoxic pathogenicity factor fusaric acid (FA) represses the production of 2,4-diacetylphloroglucinol (DAPG), a key factor in the antimicrobial activity of the biocontrol strain Pseudomonas fluorescens CHA0. FA production by 12 Fusarium oxysporum strains varied substantially. We measured the effect of FA production on expression of the phlACBDE biosynthetic operon of strain CHA0 in culture media and in the...

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