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Segregation of the genus Parahypoxylon (Hypoxylaceae, Xylariales) from Hypoxylon by a polyphasic taxonomic approach
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Document Title
Segregation of the genus Parahypoxylon (Hypoxylaceae, Xylariales) from Hypoxylon by a polyphasic taxonomic approach
Author
Cedeño-Sanchez M., Charria-Girón E., Lambert C., Luangsa-Ard J.J., Decock C., Franke R., Brönstrup M., Stadler M.
Affiliations
Dept. Microbial Drugs, Helmholtz Centre for Infectiion Research, Inhoffenstrasse 7, Braunschweig, 38124, Germany; Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, Braunschweig, 38106, Germany; Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, Braunschweig, 38106, Germany; National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand; Mycothéque de l' Universite catholique de Louvain (BCCM/MUCL), Place Croix du Sud 3, Louvain-la-Neuve, B-1348, Belgium; Department of Chemical Biology, Helmholtz Centre for Infection Research, Partner site Hannover/Braunschweig, Inhoffenstrasse 7, Braunschweig, 38124, Germany; German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Braunschweig, 38124, Germany
Type
Article
Source Title
MycoKeys
ISSN
13144057
Year
2023
Volume
95
Page
131-162
Open Access
All Open Access, Gold, Green
Publisher
Pensoft Publishers
DOI
10.3897/MYCOKEYS.95.98125
Format
Abstract
During a mycological survey of the Democratic Republic of the Congo, a fungal specimen that morphologically resembled the American species Hypoxylon papillatum was encountered. A polyphasic approach including morphological and chemotaxonomic together with a multigene phylogenetic study (ITS, LSU, tub2, and rpb2) of Hypoxylon spp. and representatives of related genera revealed that this strain represents a new species of the Hypoxylaceae. However, the multi-locus phylogenetic inference indicated that the new fungus clustered with H. papillatum in a separate clade from the other species of Hypoxylon. Studies by ultrahigh performance liquid chromatography coupled to diode array detection and ion mobility tandem mass spectrometry (UHPLC-DAD-IM-MS/MS) were carried out on the stromatal extracts. In particular, the MS/MS spectra of the major stromatal metabolites of these species indicated the production of hitherto unreported azaphilone pigments with a similar core scaffold to the cohaerin-type metabolites, which are exclusively found in the Hypoxylaceae. Based on these results, the new genus Parahypoxylon is introduced herein. Aside from P. papillatum, the genus also includes P. ruwenzoriense sp. nov., which clustered together with the type species within a basal clade of the Hypoxylaceae together with its sister genus Durotheca. © 2023 Pensoft Publishers. All rights reserved.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 3
Funding Sponsor
Deutsche Forschungsgemeinschaft; Secretaria Nacional de Ciencia y Tecnología; Instituto para la Formación y Aprovechamiento de Recursos Humanos
Publication Source
WOS