Molecular phylogeny of Phoma and allied anamorph genera: Towards a reclassification of the Phoma complex
Molecular phylogeny of Phoma and allied anamorph genera: Towards a reclassification of the Phoma complex
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DOI：
10.1016/j.mycres.2009.01.002
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发表时间：
2009-04-01
影响因子：
--
通讯作者：
Crous, Pedro W.
中科院分区：
文献类型：
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作者：
De Gruyter, Johannes;Aveskamp, Maikel M.;Crous, Pedro W.
目前茎点霉属的概念是广义的，有九个部分被确认的基础上形态特征。茎点霉的有性型状态已在Didymella、Leptosphaeria、Pleospora和Mycosphaerella属中描述，表明茎点霉无性型代表一个多系群。在试图划定属的界限，代表菌株的各种茎点霉部分和相关的coelomycetous属的研究。比较了18个茎点霉属（Phoma）菌株与壳二胞属（Ascochyta）、盾壳霉属（Coniothyrium）、半茎点霉属（Deuterophoma）、拟微球壳菌属（Microsphaeropsis）、侧茎点霉属（Pleurophoma）、核壳菌属（Pyrenochaeta）和11个真形属（Teleornorph）等39个无性型近缘属的代表菌株的18S nrDNA（SSU）和28S nrDNA（LSU）序列。茎点霉属的模式种包括茎点霉属、拟叶点霉属、硬孢霉属、大孢霉属和Peyronellaea属，与模式种壳二胞属和拟微球壳菌属组成一个亚支。新的科Didymellaceae建议容纳这些茎点霉节和相关的无性型属。本研究表明，拟茎点霉组的模式种根茎点霉（Phoma radicina）和异孢茎点霉组的模式种异型磷茎点霉（Phoma heterospora）分别归属于黑球壳科（Phaeosphaeriaceae）和小球壳科（Leptosphaeriaceae）。(C)2009年英国真菌学会。由爱思唯尔有限公司出版。保留所有权利。
The present generic concept of Phoma is broadly defined, with nine sections being recognised based on morphological characters. Teleomorph states of Phoma have been described in the genera Didymella, Leptosphaeria, Pleospora and Mycosphaerella, indicating that Phoma anamorphs represent a polyphyletic group. In an attempt to delineate generic boundaries, representative strains of the various Phoma sections and allied coelomycetous genera were included for study. Sequence data of the 18S nrDNA (SSU) and the 28S nrDNA (LSU) regions of 18 Phoma strains included were compared with those of representative strains of 39 allied anamorph genera, including Ascochyta, Coniothyrium, Deuterophoma, Microsphaeropsis, Pleurophoma, Pyrenochaeta, and 11 teleornorph genera. The type species of the Phoma sections Phoma, Phyllostictoides, Sclerophomella, Macrospora and Peyronellaea grouped in a subclade in the Pleosporales with the type species of Ascochyta and Microsphaeropsis. The new family Didymellaceae is proposed to accommodate these Phoma sections and related anamorph genera. The present study demonstrated that Phoma radicina, the type species of Phoma sect. Paraphoma and Phoma heteromorphospora, the type species of Phoma sect. Heterospora can be assigned to the Phaeosphaeriaceae and Leptosphaeriaceae respectively. (C) 2009 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.