文献类型：期刊文献

中文题名：Two novel Neohelicascus species from freshwater habitats in southern China

英文题名：中国南方水生环境中的螺壳菌属Neohelicascus两个新种

作者：TIAN Xingguo BAO Danfeng HAN Jiajun MA Peng WANG Xiangfei LU Yongzhong

第一作者：TIAN Xingguo;田兴国

机构：[1]School of Food and Pharmaceutical Engineering,Guizhou Institute of Technology,Guiyang 550025,Guizhou,China;[2]Guizhou Key Laboratory of Agricultural Microbiology,Guizhou Academy of Agricultural Sciences,Guiyang 550009,Guizhou,China;[3]Engineering Research Center of the Utilization for Characteristic Bio-Pharmaceutical Resources in Southwest of Ministry of Education,Guizhou University,Guiyang 550025,Guizhou,China;[4]Department of Entomology and Plant Pathology,Faculty of Agriculture,Chiang Mai University,Chiang Mai 50200,Thailand

第一机构：贵州理工学院

年份：2026

卷号：45

期号：5

起止页码：23-34

中文期刊名：菌物学报

外文期刊名：Mycosystema

收录：;北大核心:【北大核心2023】；

基金：supported by the National Natural Science Foundation of China(32360011);the Science and Technology Foundation of Guizhou Province(QianKeHe Pingtai ZSYS[2025]029);the Science and Technology Program of Guizhou Province(QianKeHe Jichu QN[2025]215);the Postdoctoral Fellowship Program of CPSF(GZC20240346);the Guizhou Provincial Basic Research Program(Natural Science)(QianKeHe Basic-MS[2025]general program 666)。

语种：英文

中文关键词：new species;freshwater fungi;morphology;phylogeny;taxonomy

外文关键词：新种;淡水真菌;形态学;系统发育学;分类学

摘要：Freshwater fungi play a crucial role in aquatic ecosystems as key decomposers of submerged woody debris,facilitating nutrient cycling and maintaining ecological balance.Southern China has emerged as a global hotspot for freshwater fungal diversity,with numerous novel species being discovered in recent years.In this study,three fresh collections were collected from Guangxi Zhuang Autonomous Region and Guizhou Province.Based on comprehensive morphological comparisons and multi-locus(LSU,ITS,SSU,tef1-α)phylogenetic analyses,two novel species Neohelicascus multiseptatus and N.nanpanjiangensis were identified and described.Detailed morphological descriptions and illustrations are given.In addition,a key to known species of Neohelicascus is also provided.
淡水真菌作为沉水木质残体的关键分解者,在水生生态系统中发挥着至关重要的作用,能够推动养分循环并维持生态平衡。中国南方已成为全球淡水真菌多样性研究的热点区域,近年来不断有新物种被发现和报道。本研究从广西和贵州两地采集到3份新鲜标本,结合全面的形态学比较与多基因(LSU、ITS、SSU、tef1-α)联合的系统发育分析,鉴定并详细描述了新螺壳菌属2个新物种:多隔孢新螺壳菌Neohelicascus multiseptatus与南盘江新螺壳菌N.nanpanjiangensis,同时提供了详细的形态学图版,并编制了该属的物种检索表。本研究结果丰富了中国南方淡水真菌的多样性,深化了对新螺壳菌属真菌分类学的认识,为后续淡水真菌分类学与生态学研究提供了数据参考。