Eyespot of cereals revisited: ITS phylogeny reveals new species relationships
Eyespot of cereals revisited: ITS phylogeny reveals new species relationships
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DOI：
10.1023/a:1026111030426
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发表时间：
2003-10-01
影响因子：
1.8
通讯作者：
Gams, W
中科院分区：
文献类型：
--
作者：
Crous, PW;Groenewald, JZE;Gams, W
迄今为止，有四种被分类为假尾孢菌属或枝孢菌属（丝孢菌纲）的物种与谷物的眼斑病症状有关。其中两个与塔帕里描述的teleomorphs有关。然而，来自rDNA操纵子的内转录间隔区（ITS1，5.8S和ITS2）的序列数据显示，与Taperidae相关的眼斑真菌与Ramulispora sorghi（Ramulispora的类型）不同源。现在，该属的名称Tapalia被拒绝，而倾向于保守的名称Mollisia，它似乎包含异质真菌。Taperacea yallundae与Mollisia，M. cinerea，但集群分开，被更密切的物种与Cadophora anamorphs。一个新的全形属，Oculimacula，因此提出了眼斑真菌的有性型，而无性型容纳在Helgardia gen. nov.
Four species so far classified in Pseudocercosporella or Ramulispora (hyphomycetes) are associated with eyespot disease symptoms of cereals. Two of these have been linked to teleomorphs that were described in Tapesia. Sequence data derived from the Internal Transcribed Spacer region (ITS1, 5.8S and ITS2) of the rDNA operon showed, however, that the eyespot fungi associated with Tapesia are not congeneric with Ramulispora sorghi, the type of Ramulispora. The genus name Tapesia is now rejected in favour of the conserved name Mollisia, which appears to comprise heterogeneous fungi. Tapesia yallundae is not closely related to the type of Mollisia, M. cinerea, but clusters separately, being more closely allied to species with Cadophora anamorphs. A new holomorph genus, Oculimacula, is therefore proposed for teleomorphs of the eyespot fungi, while the anamorphs are accommodated in Helgardia gen. nov.