Degradation of the plant defence hormone salicylic acid by the biotrophic fungus Ustilago maydis. Issue 1 (11th June 2013)

• Record Type: Journal Article
• Authors: Rabe, Franziska; Ajami‐Rashidi, Ziba; Doehlemann, Gunther; Kahmann, Regine; Djamei, Armin
• Is Part Of: Molecular microbiology. Volume 89:Issue 1(2013)
• Page Start: 179
• Page End: 188
• Publication Date: 2013-06-11
• Subjects: Molecular microbiology -- Periodicals; 572.829
• DOI: 10.1111/mmi.12269
• Languages: English
• ISSNs: 0950-382X

Abstract

<abstract abstract-type="main"> <title>Summary</title> <p>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 <italic>Ustilago maydis</italic>. Here we identified Shy1, a cytoplasmic <italic>U. maydis</italic> salicylate hydroxylase which has orthologues in the closely related smuts <italic>Ustilago hordei</italic> and <italic>Sporisorium reilianum</italic>. <italic>shy1</italic> is transcriptionally induced during the biotrophic stages of development but not required for virulence during seedling infection. <italic>Shy1</italic> activity is needed for growth on plates with SA as a sole carbon source. The trigger for <italic>shy1</italic> transcriptional induction is SA, suggesting the possibility of a SA sensing mechanism in this fungus.</p> </abstract>