Multi-locus phylogeny reveals two new species ofExidia(Auriculariales,Basidiomycota) from China
Multi-locus phylogeny reveals two new species ofExidia(Auriculariales,Basidiomycota) from China
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多位点系统发育揭示了中国 Exidia 的两个新种（木耳目、担子菌门）
DOI：
10.1007/s11557-020-01601-8
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发表时间：
2020-09-01
影响因子：
2.4
通讯作者：
Liu, Hong-Xia
中科院分区：
文献类型：
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作者：
Ye, Sheng-Yi;Zhang, Yu-Bo;Liu, Hong-Xia
腺芽草属（Exidia glandullosa）是一世界性种，在中国报道较多。根据形态学和分子数据分析了17个具有黑色胶状担子果的标本。利用ITS+nLSU组合数据集和ITS+nLSU+TEF1-a + RPB2组合数据集进行系统发育分析，新生成了20个ITS、20个nLSU、22个TEF1-a和20个RPB2序列。17个标本在系统发育上分为3个不同的谱系，鉴定为3个新种，分别为E. glandulosa s.str .和2个新种，E. reflexa和E. subglandulosa。这两个新种的不同之处在于包膜表面没有乳突，反射孢子与腺下孢子的不同之处在于有明显的积液反射的担子果和较小的担子孢子。本文提供了两个新种的详细特征和形态学照片。
Exidia glandulosa is a cosmopolitan species, and it was commonly reported from China. Seventeen specimens with close resemblance to the species by having blackish, gelatinous basidiocarps were analyzed based on morphological and molecular data. Phylogenetic analyses were performed by the combined ITS+nLSU dataset and the combined ITS+nLSU+TEF1-a + RPB2 dataset, and 20 ITS, 20 nLSU, 22 TEF1-a, and 20 RPB2 sequences were newly generated. Seventeen specimens were gathered into three different lineages in phylogenies, and they were identified as three species, E. glandulosa s. str. and two new species, E. reflexa and E. subglandulosa, respectively. The two new species differ from E. glandulosa s. str. by the absence of papillae on hymenial surface, and E. reflexa differs from E. subglandulosa by obvious effused-reflexed basidiocarps and smaller basidia and basidiospores. Detailed characteristics with morphological photos of two new species were provided here.