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Multi-Locus Phylogeny and Morphology Reveal Two New Species of Hypoxylon (Hypoxylaceae, Xylariales) from Motuo, China

文献类型： 外文期刊

作者： Zhu, An-Hong 1 ; Song, Zi-Kun 1 ; Wang, Jun-Fang 1 ; Guan, Hao-Wen 1 ; Ma, Hai-Xia 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Inst Trop Agr Resources, Haikou 571101, Peoples R China

2.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China

3.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Peoples R China

4.Jilin Agr Univ, Coll Plant Protect, Changchun 130118, Peoples R China

5.Liaoning Univ, Sch Life Sci, Shenyang 110036, Peoples R China

6.Haikou Key Lab Protect & Utilizat Edible & Med Fun, Haikou 571101, Peoples R China

7.Hainan Key Lab Trop Microbe Resources, Haikou 571101, Peoples R China

关键词： Ascomycota; multigene phylogeny; new species; taxonomy; Xylariales

期刊名称：MICROORGANISMS （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2024 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Hypoxylaceous fungi are abundant in China, but their discovery and report are uneven in various provinces, with more fungi in Yunnan and Hainan and fewer fungi in Tibet. During the investigation of macro-fungi in Motuo county, Tibet Autonomous Region, we collected a number of xylarialean specimens. Six hypoxylaceous specimens growing on dead angiosperm were collected from the forests of Motuo county, and they were described and illustrated as two new species in Hypoxylon based on a combination of morphological characters and molecular evidence. Hypoxylon diperithecium was characterized by its bistratal perithecia, purple-brown stromatal granules, citrine to rust KOH-extractable pigments, and light brown to brown ascospores ellipsoid-inequilateral with conspicuous coil-like ornamentation. Hypoxylon tibeticum was distinct from other species by having pulvinate and applanate stromata, surface vinaceous, with orange granules, orange KOH-extractable pigments, and brown ascospores with inconspicuous ornamentation. The multi-gene phylogenetic analyses (ITS-LSU-RPB2-TUB) supported the two new taxa as separate lineages in the genus Hypoxylon. A key to all known Hypoxylon taxa from China is provided.

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