Titel
Discovery of a new species of the Hypoxylon rubiginosum complex from Iran and antagonistic activities of Hypoxylon spp. against the Ash Dieback pathogen, Hymenoscyphus fraxineus, in dual culture
Autor*in
Christopher Lambert
Helmholtz-Zentrum für Infektionsforschung GmbH
Frank Surup
Helmholtz-Zentrum für Infektionsforschung GmbH
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Abstract
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 rubiginosum sensu 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.
Stichwort
AscomycotaChemotaxonomyChemical ecologyHypoxylaceaeNatural ProductsTaxonomyone new species
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
MycoKeys
Band
66
ISSN
1314-4049
Erscheinungsdatum
2020
Seitenanfang
105
Seitenende
133
Publication
Pensoft Publishers
Erscheinungsdatum
2020
Zugänglichkeit
Rechte
Rechteangabe
© 2020 Mohammad Javad Pourmoghaddam, Christopher Lambert, Frank Surup, Seyed Akbar Khodaparast, Irmgard Krisai-Greilhuber, Hermann Voglmayr, Marc Stadler
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