Chitin synthase-deficient mutant of Fusarium oxysporum elicits tomato plant defence response and protects against wild-type infection.

ABSTRACT: A mutant of the root pathogen Fusarium oxysporum f. sp. lycopersici, deficient in class V chitin synthase, has been shown previously to be nonvirulent. In this study, we tested the hypothesis that the cause of its avirulence could be the elicitation of the induced plant defence response, leading to the restriction of fungal infection. Co-inoculation of tomato plants with the wild-type strain and the DeltachsV mutant resulted in a significant reduction in symptom development, supporting a protective mechanism exerted by the mutant. The ability of the mutant to penetrate and colonize plant tissues was determined by scanning and transmission electron microscopy, as well as fluorescence microscopy using green fluorescent protein- or cherry fluorescent protein-labelled fungal strains. The exten

SUBMITTER: Pareja-Jaime Y 

PROVIDER: S-EPMC6640515 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature