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Degradation of the plant defence hormone salicylic acid by the biotrophic fungus U stilago maydis
Author(s) -
Rabe Franziska,
AjamiRashidi Ziba,
Doehlemann Gunther,
Kahmann Regine,
Djamei Armin
Publication year - 2013
Publication title -
molecular microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.857
H-Index - 247
eISSN - 1365-2958
pISSN - 0950-382X
DOI - 10.1111/mmi.12269
Subject(s) - ustilago , biology , salicylic acid , fungus , microbiology and biotechnology , virulence , hypha , plant hormone , cytoplasm , botany , biochemistry , gene
Summary Salicylic acid ( SA ) is a key plant defence hormone which plays an important role in local and systemic defence responses against biotrophic pathogens like the smut fungus U stilago maydis . Here we identified Shy1, a cytoplasmic U . maydis salicylate hydroxylase which has orthologues in the closely related smuts U stilago hordei and S porisorium reilianum . shy1 is transcriptionally induced during the biotrophic stages of development but not required for virulence during seedling infection. Shy1 activity is needed for growth on plates with SA as a sole carbon source. The trigger for shy1 transcriptional induction is SA , suggesting the possibility of a SA sensing mechanism in this fungus.