中国甘肃省狭义丝盖伞属二新种  

Two new smooth-spored species of Inocybe(Inocybaceae,Agaricales)from Gansu Province,northwestern China

作　　者：范宇光 图力古尔 FAN Yu-Guang;BAU Tolgor(Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi,Jilin Agricultural University,Changchun,Jilin 130118,China;Key Laboratory of Tropical Translational Medicine of Ministry of Education,Hainan Medical University,Haikou,Hainan 571199,China)

机构地区：[1]食药用菌教育部工程研究中心吉林农业大学,吉林长春130118 [2]教育部热带转化医学重点实验室海南医学院,海南海口571199

出　　处：《菌物学报》2020年第9期1694-1705,共12页Mycosystema

基　　金：Supported by the National Natural Science Foundation of China(31093440,31270063,31400024,31860009)。

摘　　要：依据形态学和分子系统学研究结果,描述了产自中国甘肃省的狭义丝盖伞属2个新种,即拟黄囊丝盖伞Inocybe muricellatoides和甘肃丝盖伞I.gansuensis。对新种的ITS、LSU和rpb2片段进行了测序和分析,并提供了详细描述、线条图、生态照片及与相似种的区别。拟黄囊丝盖伞以菌盖翘起的鳞片、菌柄纤维状、孢子光滑和厚壁的侧生囊状体为主要识别特征。甘肃丝盖伞具有粗壮的子实体、较大的孢子和厚壁侧生囊状体。基于LSU和rpb2联合数据的分子系统发育分析显示这两个新种隶属于狭义丝盖伞属且分别占据独特的分支。Two smooth-spored species of Inocybe,I.muricellatoides and I.gansuensis,are described from Gansu Province,northwestern China based on morphological and molecular data.Detailed descriptions,line drawings,photographs and comparisons between affined species are presented.The nuclear ribosomal internal transcribed spacer region(ITS),a portion of the nuclear ribosomal large subunit(n LSU)and a portion of the nuclear second-largest subunit of RNA polymerase II(rpb2)gene of these species were sequenced and analyzed.Inocybe muricellatoides is characterized by ochraceous-squarrose pileus,fibrillose stipe,smooth basidiospores and thick-walled pleurocystidia.Inocybe gansuensis is characterized by robust basidiomata,large basidiospores and thick-walled pleurocystidia.Bayesian phylogenetic analysis based on LSU and rpb2 sequence data confirmed the distinctiveness of these species and correctness of their placement within Inocybe s.str.

关 键 词：伞菌目 丝盖伞科 分类 分子系统发育 

分 类 号：Q949.32[生物学—植物学]