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Fungal Taxonomy / Taxonomie Fongique

Diatrype genheensis sp. nov. – a new wood-inhabiting species of Diatrypaceae (Xylariales, Ascomycota) from China

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Pages 148-157 | Accepted 28 Nov 2022, Published online: 03 Jan 2023
 

Abstract

A new species of Diatrype (Diatrypaceae, Xylariales), D. genheensis, is proposed based on a combination of morphological features and molecular evidence. Diatrype genheensis, from a fallen angiosperm branch in Inner Mongolia, is characterized by having 3–14 perithecia embedded within a stroma, polysporous asci and ascospores that are allantoid, slightly curved, aseptate and subhyaline. The phylogeny of Diatrypaceae was inferred from a combined dataset of ITS and β-tubulin sequences. The phylogenetic tree indicated that D. genheensis belongs to a clade with two other polysporous species, D. betulaceicola and D. larissae. In the phylogenetic trees, D. genheensis was clearly separated from other sampled species of Diatrype.

Résumé

Une nouvelle espèce de Diatrype (Diatrypaceae, Xylariales), D. genheensis, est proposée sur la base d’une combinaison de caractéristiques morphologiques et de preuves moléculaires. Diatrype genheensis, provenant d’une branche tombée d’une angiosperme de Mongolie intérieure, est caractérisé par 3 à 14 périthèces incrustés dans un stroma, des asques polysporés et des ascospores allantoïdes, légèrement courbées, non cloisonnées et subhyalines. La phylogénie des Diatrypaceae a été déduite à partir de la combinaison d’un ensemble de données sur les ITS et les séquences de la tubuline β. L’arbre phylogénétique a indiqué que D. genheensis appartient à un clade comportant deux autres espèces polysporées: D. betulaceicola et D. larissae. Dans les arbres phylogénétiques, D. genheensis était nettement séparé des autres espèces échantillonnées de Diatrype.

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary material

Supplemental data for this article can be accessed online here: https://doi.org/10.1080/07060661.2022.2154388

Additional information

Funding

This study was supported by the National Natural Science Foundation of China [no. 31770023, 31972848], Key Research and Development Program of Hainan [ZDYF2020062], and the Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences [No. 1630012022009, 1630052022003].

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