期刊
JOURNAL OF FUNGI
卷 8, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/jof8070712
关键词
Ascomycota; Dothideomycetes; fungal taxonomy; morphology; multi-locus; phylogeny
资金
- Talent Introduction and Cultivation Project, University of Electronic Science and Technology of China [A1098531023601245]
During a survey of fungal diversity in Sichuan Province, China, two new species and a new genus of Helminthosporium-like fungi were discovered. The new genus, Synhelminthosporium, is distinguished by producing synnematous conidiophores.
Helminthosporium is a polyphyletic genus in Massarinaceae (Pleosporales). Species of Helminthosporium are characterized by having septate and erect conidiophores, acro-pleurogenous and distoseptate conidia with a ring-shaped scar at the base. During a survey of fungal diversity in Sichuan Province, China, six Helminthosporium-like isolates were collected from dead branches of unknown trees. Five barcodes, including ITS (ITS1-5.8S-ITS2), SSU, LSU, TEF1, and RPB2 were amplified and sequenced. Morphological examination and multi-locus phylogenetic analyses revealed two new Helminthosporium species (H. chengduense sp. nov., and H. chinense sp. nov.), a new genus (Synhelminthosporium gen. nov.) with a type species Synhelminthosporium synnematoferum sp. nov., and two known species (Helminthosporium submersum and H. velutinum) within Massarinaceae. The new genus Synhelminthosporium differs from the phylogenetically closest genus Helminthosporium by producing synnematous conidiophores. This work expands our understanding of the diversity of Helminthosporium-like taxa in Sichuan Province, China.
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