Taxonomic revision of Neodidymelliopsis with N. cynanchi sp. nov., associated with Cynanchum sibiricum leaf spot in Xinjiang, China

被引：2

作者：

Qian, Zhixiu ^{[1
]}

Zhang, Shanhe ^{[2
]}

Manawasinghe, Ishara S. ^{[1
]}

Sun, Diangang ^{[1
]}

Song, Jiage ^{[1
]}

Xu, Biao ^{[1
]}

机构：

[1] Zhongkai Univ Agr & Engn, Innovat Inst Plant Hlth, Key Lab Green Prevent & Control Fruits & Vegetable, Minist Agr & Rural Affairs, Guangzhou, Peoples R China

[2] Tarim Univ, Coll Life Sci & Technol, Res Ctr Populus Euphrat, Key Lab Protect & Utilizat Biol Resources Tarim Ba, Aral, Peoples R China

来源：

NEW ZEALAND JOURNAL OF BOTANY | 2024年 / 62卷 / 2-3期

关键词：

1 new species; desert plant; morphology; phylogenetic analyzes; Pleosporales; PHOMA; FUNGI; PHYLOGENY; DIVERSITY; CLIMATE; GENERA; PLANT;

D O I：

10.1080/0028825X.2023.2267807

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

During surveys of plant pathogens in the desert regions of Xinjiang Province, China, a leaf spot was observed on Cynanchum sibiricum. The suspected fungus was isolated and identified using morphology and molecular phylogeny. Morphologically, the fungus was similar to Neodidymelliopsis species. Phylogenetic analyzes of combined internal transcribed spacer (ITS); the large subunit of the ribosomal rDNA (LSU); RNA polymerase II the second largest subunit (rpb2), and beta-tubulin gene (tub2) sequences showed that our isolates formed a distinct monophyletic lineage in Neodidymelliopsis. This new clade is identified as Neodidymelliopsis cynanchi sp. nov. based on the phylogenetic and morphological evidence. In addition, N. urticae is synonymized with N. cannabis based on morphology and phylogeny. Furthermore, we emphasize that in-depth revisions are required to assure the taxonomic status of N. sambuci, N. tinkyukuku and N. salvia. This is the first report of Neodidymelliopsis species associated with C. sibiricum leaf spot. The results expand our knowledge of Didymellaceae taxa and microfungi associated with desert environments in China.

引用

页码：151 / 164

页数：14

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