Multi-Gene Phylogeny and Taxonomy of Hypoxylon (Hypoxylaceae, Ascomycota) from China

文献类型： 外文期刊

第一作者： Ma, Haixia

作者： Ma, Haixia;Song, Zikun;Pan, Xiaoyan;Yang, Zhanen;Qu, Zhi;Ma, Haixia;Ma, Haixia;Song, Zikun;Li, Yu;Pan, Xiaoyan;Yang, Zhanen

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关键词： Ascomycota; molecular phylogenetics; wood-decomposing fungi; tropical rainforest; taxonomy; Hypoxylon; Hainan Tropical Rainforest National Park

期刊名称：DIVERSITY-BASEL （ 影响因子：3.029； 五年影响因子：2.905 ）

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年卷期： 2022 年 14 卷 1 期

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收录情况： SCI

摘要： The Hypoxylon species play an important ecological role in tropical rainforest as wood-decomposers, and some might have benefical effects on their hosts as endophytes. The present work concerns a survey of the genus Hypoxylon from Hainan Tropical Rainforest National Park of China. Four new species: H. wuzhishanense, H. hainanense, H. chrysalidosporum, and H. cyclobalanopsidis, were discovered based on a combination of morphological characteristics and molecular data. Hypoxylon wuzhishanense is characterized by Rust pulvinate stromata, amyloid apical apparatus and brown ascospores, with most of the perispore being indehiscent in 10% KOH. Hypoxylon hainanense has effused-pulvinate and Violet stromata, amyloid apical apparatus, light-brown to brown ascospores with straight germ slit and dehiscent perispore. Hypoxylon chrysalidosporum is distinguished by glomerate to pulvinate stromata, highly reduced or absent inamyloid apical apparatus, and light-brown to brown ascospores with very conspicuous coil-like ornamentation. Hypoxylon cyclobalanopsidis has Livid Purple pulvinate stromata, highly reduced amyloid apical apparatus, faint bluing, brown ascospores and dehiscent perispore, and it grows on dead branches of Cyclobalanopsis. Detailed descriptions, illustrations, and contrasts with morphologically similar species are provided. Phylogenetic analyses inferred from ITS, RPB2, LSU, and beta-tubulin sequences confirmed that the four new species are distinct within the genus Hypoxylon.

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