Discovery of a new species of the Hypoxylon rubiginosum complex from Iran and antagonistic activities of spp. against the Ash Dieback pathogen, Hymenoscyphus fraxineus,, in dual culture.
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Authors
Pourmoghaddam, Mohammad JavadLambert, Christopher
Surup, Frank
Khodaparast, Seyed Akbar
Krisai-Greilhuber, Irmgard
Voglmayr, Hermann
Stadler, Marc
Issue Date
2020-04-24
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During a survey of xylarialean fungi in Northern Iran, several specimens that showed affinities to the Hypoxylon rubiginosum complex were collected and cultured. A comparison of their morphological characters, combined with a chemotaxonomic study based on high performance liquid chromatography, coupled with diode array detection and mass spectrometry (HPLC-DAD/MS) and a multi-locus phylogeny based on ITS, LSU, rbp2 and tub2 DNA sequences, revealed a new species here described as Hypoxylon guilanense. In addition, Hypoxylon rubiginosumsensu stricto was also encountered. Concurrently, an endophytic isolate of the latter species showed strong antagonistic activities against the Ash Dieback pathogen, Hymenoscyphus fraxineus, in a dual culture assay in our laboratory. Therefore, we decided to test the new Iranian fungi for antagonistic activities against the pathogen, along with several cultures of other Hypoxylon species that are related to H. rubiginosum. Our results suggest that the antagonistic effects of Hypoxylon spp. against Hym. fraxineus are widespread and that they are due to the production of antifungal phomopsidin derivatives in the presence of the pathogen.Citation
MycoKeys. 2020;66:105-133. Published 2020 Apr 24. doi:10.3897/mycokeys.66.50946.Affiliation
HZI,Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7,38124 Braunschweig, Germany.Publisher
PenSoft PublishersJournal
MycoKeysPubMed ID
32377154Type
ArticleLanguage
enEISSN
1314-4049ae974a485f413a2113503eed53cd6c53
10.3897/mycokeys.66.50946
Scopus Count
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