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Title: Characterization of sirodesmins isolated from the phytopathogenic fungus Leptosphaeria maculans
Authors: Mitrović P.
Orčić, Dejan
Sakač, Zvonimir
Marjanović-Jeromela A.
Grahovac N.
Milošević D.
Marisavljević D.
Journal: Journal of the Serbian Chemical Society
Issue Date: 1-Jan-2012
Abstract: The pathogenicity of phytopathogenic fungi is associated with phytotoxins, especially with their chemical nature and quantity. Sirodesmins are phytotoxins from the epipolythiodioxopiperazines group, produced by the fungus Leptosphaeria maculans, which are a cause of blackleg and stem canker in oilseed rape (Brassica napus L.). The aim of this work was to obtain a detailed chemical profile of sirodesmins in five fungal isolates (four from Vojvodina, Serbia, and one from the Centre for Agricultural Research, Rothamsted, UK). Sirodesmins showing different phytotoxicity on treated cotyledons of cv. Quinta were separated and detected by thin layer chromatography in all analysed isolates (L.m, C-3, St-5 and S-11) except K-113, which neither contained sirodesmin congeners nor did it exhibit activity. By use of high performance liquid chromatography coupled with tandem mass spectrometer, it was possible to identify total of 10 sirodesmins, together with their precursor - phomamide. It was found that the dominant epipolythiodioxopiperazines of the investigated L. maculans isolates were sirodesmin PL, sirodesmin C, and their de-acetylated derivatives. © 2012 Copyright (CC) SCS.
Type: Article
DOI: 10.2298/JSC111231048M
ISSN: 03525139
SCOPUS: 84870211878
Appears in Collections:University Library, Kragujevac
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