Morphology and phylogeny reveal two novel Coryneum species from
Morphology and phylogeny reveal two novel Coryneum species from
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形态学和系统发育揭示了中国两种新的棒状属植物
DOI：
10.3897/mycokeys.56.35554
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发表时间：
2019-07-10
期刊：
影响因子：
3.3
通讯作者：
Tian, Cheng-Ming
中科院分区：
文献类型：
--
作者：
Jiang, Ning;Voglmayr, Hermann;Tian, Cheng-Ming
摘要棒孢属是棒孢科中唯一的一个属，其分生孢子具横裂的褐色，是棒孢目中唯一的一个属。然而，由于形态特征的变异性和重叠性以及大多数描述的物种缺乏序列数据，目前很难鉴定棒菊属物种。在中国的真菌采集过程中，从冬青属和栎属的腐烂枝条上获得了13个棒孢属菌株。形态学和系统发育分析（ITS、LSU、TEF 1-α和RPB 2）表明，这些菌株属于2个新种（Coryacillicissp. nov.和松山刺C.songshanensesp. nov.），和三个已知种，C.gigasporum，C.sinense和C. suttonii。棒孢霉比大多数棒孢霉具有更大的分生孢子和更多的间隔。松山虫草与同属栎属的中华虫草在孢子长度上相似，但在孢子宽度和分子生物学数据上存在差异。
Abstract Coryneum is currently the sole genus of Coryneaceae in Diaporthales, distinguished from other diaporthalean genera by transversely distoseptate brown conidia. However, Coryneum species are presently difficult to identify because of variability and overlap of morphological characters and the lack of sequence data for most described species. During fungal collection trips in China, 13 Coryneum isolates were obtained from cankered branches of Ilex and Quercus. Morphological and phylogenetic analyses (ITS, LSU, TEF1-α and RPB2) revealed that these strains belong to two new species (viz. Coryneumilicissp. nov. and C.songshanensesp. nov.), and three known species, C.gigasporum, C.sinense, and C.suttonii. Coryneumilicis has larger conidia and more distosepta than most Coryneum species. Coryneumsongshanense was similar to C.sinense from the same host genus, Quercus, in conidial length, but distinct in conidial width and by molecular data.