The transcription factor WRKY75 positively regulates jasmonate-mediated plant defense to necrotrophic fungal pathogens.

ABSTRACT: Necrotrophic fungi cause devastating diseases in both horticultural and agronomic crops, but our understanding of plant defense responses against these pathogens is still limited. In this study, we demonstrated that WRKY75 positively regulates jasmonate (JA)-mediated plant defense against necrotrophic fungal pathogens Botrytis cinerea and Alternaria brassicicola, and also affects the sensitivity of plants to JA-inhibited seed germination and root growth. Quantitative analysis indicated that several JA-associated genes, such as OCTADECANOID-RESPONSIVE ARABIDOPSIS (ORA59) and PLANT DEFENSIN 1.2A (PDF1.2), were significantly reduced in expression in wrky75 mutants, and enhanced in WRKY75 overexpressing transgenic plants. Immunoprecipitation assays revealed that WRKY75 directly binds to the pr

SUBMITTER: Chen L 

PROVIDER: S-EPMC7904156 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature