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Our current understanding of the genus Pseudocosmospora (Hypocreales, Nectriaceae) in China

Authors
  • Zeng, Zhao-Qing1
  • Zhuang, Wen-Ying1
  • 1 Chinese Academy of Sciences, Beijing, 100101, China , Beijing (China)
Type
Published Article
Journal
Mycological Progress
Publisher
Springer Berlin Heidelberg
Publication Date
Apr 16, 2021
Volume
20
Issue
4
Pages
419–429
Identifiers
DOI: 10.1007/s11557-021-01672-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

To explore species diversity of the genus Pseudocosmospora, collections from Beijing and Hubei Province of China were examined, and three undescribed species were encountered. Morphological features and DNA sequence analyses of the ITS, nc LSU rDNA, RPB1, and TUB regions support their placement in Pseudocosmospora and recognition of two new species. Pseudocosmospora curvispora sp. nov. encountered on fruiting bodies of a species of the Diatrypaceae has gregarious, subglobose to obpyriform perithecia seated directly on the host fungus clavate asci, with eight ellipsoidal, smooth ascospores, acremonium- to verticillium-like conidiophores, and strongly curved, allantoid, unicellular conidia. Pseudocosmospora shennongjiana sp. nov. is characterized by solitary to gregarious, subglobose to globose perithecia with a minute basal stroma clavate asci, containing eight ellipsoidal, spinulose ascospores, acremonium-like conidiophores, and rod-shaped, unicellular conidia. An unnamed species of the genus is also described. Distinctions between these species and their close relatives are compared in detail. The previously recorded species of the genus in China are briefly reviewed.

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