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首页> 外文期刊>Mycologia >Systematics of genus Gnomoniopsis (Gnomoniaceae, Diaporthales) based on a three gene phylogeny, host associations and morphology
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Systematics of genus Gnomoniopsis (Gnomoniaceae, Diaporthales) based on a three gene phylogeny, host associations and morphology

机译：基于三个基因的系统发育，宿主关联和形态学的侏儒症（Gnomoniaceae，Diaporthales）属的系统学

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摘要

Species of Gnomoniopsis are leaf- and stem-inhabiting pyrenomycetes that infect plants in Fagaceae, Onagraceae and Rosaceae. Morphology and analyses of DNA sequences from three ribosomal DNA and protein coding regions, namely beta-tubulin, translation elongation factor 1 alpha (tef-1 alpha) and the ITS region including ITS1, 5.8S rDNA. and ITS2, were used to define species in Gnomoniopsis. Secondary structural alignment of the ITS region across four genera in Gnomoniaceae was used to increase the potential number of homologous positions in the ITS alignment. Ascospore isolates were grown from newly collected specimens. Type specimens were compared with these specimens to determine their identity. In this paper a recent concept of Gnomoniopsis is confirmed with phylogenetic resolution of additional species. Four new combinations and one new species are proposed. Nine species are described and illustrated, and a key is provided to the 13 species currently recognized in Gnomoniopsis.
机译：侏儒症的物种是栖于叶和茎的拟杆菌科，它们感染了菊科，稻科和蔷薇科的植物。来自三个核糖体DNA和蛋白质编码区（即β微管蛋白，翻译延伸因子1 alpha（tef-1 alpha）和包括ITS1、5.8S rDNA的ITS区）的DNA的形态和分析。和ITS2被用来定义侏儒症中的物种。跨农杆菌科的四个属的ITS区域的二级结构比对用于增加ITS比对中潜在的同源位置数目。从新收集的标本中生长出子囊孢分离物。将类型样本与这些样本进行比较以确定它们的身份。在本文中，通过对其他物种的系统发育解析，证实了侏儒症的最新概念。提出了四个新组合和一个新物种。描述和说明了9种，为目前在侏儒症中识别的13种提供了关键。

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