Long Sihan, Liu Lili, Pi Yinhui, Wu Youpeng, Lin Yan, Zhang Xu, Long Qingde, Kang Yingqian, Kang Jichuan, Wijayawardene Nalin N, Wang Feng, Shen Xiangchun, Li Qirui
State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550004, China.
The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province (The Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China.
MycoKeys. 2021 Aug 20;83:1-37. doi: 10.3897/mycokeys.83.68926. eCollection 2021.
In this study, fungal specimens of the family Diatrypaceae were collected from karst areas in Guizhou, Hainan and Yunnan Provinces, China. Morpho-molecular analyses confirmed that these new collections comprise a new genus , three new species (, and ), a new combination (), two new records ( and ) from China and two other known species ( and ). The new taxa are introduced, based on multi-gene phylogenetic analyses (ITS, β-tubulin), as well as morphological analyses. The new genus is characterised by its wart-like stromata with 5-20 ascomata immersed in one stroma and the endostroma composed of thin black outer and inner layers of large white cells with thin, powdery, yellowish cells. These characteristics separate this genus from two similar genera and . Based on morphological as well as phylogenetic analyses, is introduced as a new species of . The stromata of are similar to those of and , but the ascospores are larger. Based on phylogenetic analyses, is transferred to the genus as while is introduced as a new species of with 8 spores in an ascus. In addition, multi-gene phylogenetic analyses show that is closely related to , but the ascomata and asci of are smaller. The polyphyletic nature of some genera of Diatrypaceae has led to confusion in the classification of the family, thus we discuss whether the number of ascospores per asci can still be used as a basis for classification.
在本研究中，炭角菌科真菌标本采自中国贵州、海南和云南的喀斯特地区。形态分子分析证实，这些新采集的标本包含一个新属、三个新物种（、和）、一个新组合（）、两个中国新记录种（和）以及另外两个已知物种（和）。基于多基因系统发育分析（ITS、β-微管蛋白）以及形态分析，引入了这些新分类群。新属的特征在于其疣状子座，一个子座中有5 - 20个埋生的子囊壳，子座内皮层由外层薄黑色和内层大的白色细胞组成，中间夹有薄的、粉状的淡黄色细胞。这些特征将该属与两个相似属和区分开来。基于形态学和系统发育分析，引入作为的一个新物种。的子座与和的相似，但子囊孢子更大。基于系统发育分析，被转移到属作为，而被引入作为一个每个子囊中有8个孢子的新物种。此外，多基因系统发育分析表明与密切相关，但的子囊壳和子囊较小。炭角菌科一些属的多系性质导致了该科分类的混乱，因此我们讨论每个子囊中的子囊孢子数量是否仍可作为分类依据。
