Abstract
A recent comparative proteomics study identified the short-chain dehydrogenase (Sch1) as being required for asexual sporulation (Tan et al. Eukaryotic Cell 7:1916–1929, 2008). Metabolite profiling was undertaken on the mutant strains of Stagonospora nodorum lacking the Sch1 gene to help elucidate its role. Gas chromatography-mass spectrometry of the polar metabolites in the Sch1 mutants identified a secondary metabolite at a 200-fold greater concentration than observed in the wild-type strains. Comparative analysis of the secondary metabolite and the mycotoxin alternariol using ESI-MS/MS confirmed the identity of the compound as alternariol. This is the first report to confirm the presence of a mycotoxin in S. nodorum and compelling the field to consider the health implication of this disease.
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This research was supported by the Grains Research and Development Corporation. K.-C.T. was funded by an Australian Postgraduate Award.
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Tan, KC., Trengove, R.D., Maker, G.L. et al. Metabolite profiling identifies the mycotoxin alternariol in the pathogen Stagonospora nodorum . Metabolomics 5, 330–335 (2009). https://doi.org/10.1007/s11306-009-0158-2
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DOI: https://doi.org/10.1007/s11306-009-0158-2