中国云南及西藏水生环境中的新种——棕孢香港霉(英文)  

Hongkongmyces brunneisporus sp. nov.(Lindgomycetaceae) from freshwater habitats in Yunnan Province and Tibet, Southwest China

作　　者：保旦凤 罗宗龙 苏锡钧 苏鸿雁 BAO Dan-Feng;LUO Zong-Long;SU Xi-Jun;SU Hong-Yan(College of Agriculture and Biological Sciences,Dali University,Dali,Yunnan 671003,China;Center of Excellence in Fungal Research,Mae Fah Luang University,Chiang Rai 57100,Thailand;Department of Entomology and Plant Pathology,Faculty of Agriculture,Chiang Mai University,Chiang Mai 50200,Thailand)

机构地区：[1]大理大学农学与生物科学学院,云南大理671003 [2]泰国皇太后大学真菌研究卓越中心,泰国清莱57100 [3]泰国清迈大学农学院昆虫与植物病理系,泰国清迈50200

出　　处：《菌物学报》2021年第6期1274-1285,共12页Mycosystema

基　　金：Supported by the National Natural Science Foundation of China (31860006, 31970021);Fungal Diversity Conservation and Utilization Innovation Team of Dali University (ZKLX2019213)。

摘　　要：在大湄公河次区域的水生真菌调查中,从中国云南和西藏的沉水腐木中分离得到4个菌株。基于LSU、SSU、ITS、TEF1-α和RPB2序列进行多基因系统发育分析,表明4个菌株属于菩提科香港霉属真菌。系统发育分析结果显示4个菌株聚集在一起,并与泰国香港霉形成姐妹支。基于形态学及分子系统学研究,将这4个菌株鉴定为新种棕孢香港霉。棕孢香港霉是香港霉属的第二个有性型物种,它因子囊果的孔口处有棕色至黑色的刚毛,且子囊孢子呈梭形,孢子两端逐渐变窄且钝圆,红棕色至暗棕色,具有多个隔膜而区别于另一个有性型物种泰国香港霉。本研究提供了该真菌新种的描述及图版并比较了该种与其他物种的形态差异。During the survey of freshwater fungi from Greater Mekong subregion, four fresh collections were collected from Yunnan and Tibet of China. Phylogenetic analyses of combined LSU, SSU, ITS, TEF1-α and RPB2 sequence data placed them in Lindgomycetaceae, the analyses showed that four strains clustered together and were sister to Hongkongmyces thailandica. A new species, Hongkongmyces brunneisporus, is introduced for the four fresh collections based on multi-locus phylogenetic analyses. H. brunneisporus is the second sexual species of Hongkongmyces, which can be easily distinguished from another sexual species, H. thailandica by the ascomata with dark brown to black setae near the ostiole region and the fusiform, reddish-brown to dark brown, multi-septate ascospores with obtuse and narrow ends. Description and illustration of the new species are provided. Comparison between the new species and its affined species is given.

关 键 词：新种 形态学 系统发育 有性型 分类 

分 类 号：Q949.32[生物学—植物学]