In:
MycoKeys, Pensoft Publishers, Vol. 95 ( 2023-02-20), p. 131-162
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 .
Type of Medium:
Online Resource
ISSN:
1314-4049
,
1314-4057
DOI:
10.3897/mycokeys.95.98125
DOI:
10.3897/mycokeys.95.98125.figure1
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10.3897/mycokeys.95.98125.figure2
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10.3897/mycokeys.95.98125.figure3
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10.3897/mycokeys.95.98125.figure7
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10.3897/mycokeys.95.98125.figure8
DOI:
10.3897/mycokeys.95.98125.figure9
DOI:
10.3897/mycokeys.95.98125.suppl1
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2023
detail.hit.zdb_id:
2630648-7
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