Moniliellomycetes and Malasseziomycetes, two new classes in Ustilaginomycotina.
Moniliellomycetes and Malasseziomycetes, two new classes in Ustilaginomycotina.
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DOI：
10.3767/003158514x682313
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发表时间：
2014-12
期刊：
影响因子：
9.1
通讯作者：
Boekhout T
中科院分区：
文献类型：
--
作者：
Wang QM;Theelen B;Groenewald M;Bai FY;Boekhout T
担子菌目真菌(Ustilaginmycotina，Basidimycota，Fungi)最近根据多个基因序列被重新分类。然而，马拉色菌和念珠菌两个类似酵母的属在亚门中的系统发育位置尚不清楚。基于6个基因序列，包括小亚基(18S)核糖体DNA(RDNA)、大亚基(26S)rDNA D1/D2结构域、包括5.8S rDNA在内的内部转录间隔区(ITS 1和2)、RNA聚合酶II的两个亚基(Rp1和Rp2)和翻译延长因子1-α(eF1-α)，采用不同的算法进行系统发育分析，以确定它们的系统发育位置。我们的分析表明，马拉色菌和念珠菌代表了丛枝菌属中两个根深蒂固的谱系，并与丛枝菌属和外担子菌属都有姊妹关系。这些分支被描述为新纲，即念珠菌目、念珠菌科、念珠菌属和马拉色菌目、马拉色菌科、马拉色菌属。表型差异支持这一分类，表明主要植物病原菌之间的生活方式有很大的不同。
Ustilaginomycotina (Basidiomycota, Fungi) has been reclassified recently based on multiple gene sequence analyses. However, the phylogenetic placement of two yeast-like genera Malassezia and Moniliella in the subphylum remains unclear. Phylogenetic analyses using different algorithms based on the sequences of six genes, including the small subunit (18S) ribosomal DNA (rDNA), the large subunit (26S) rDNA D1/D2 domains, the internal transcribed spacer regions (ITS 1 and 2) including 5.8S rDNA, the two subunits of RNA polymerase II (RPB1 and RPB2) and the translation elongation factor 1-α (EF1-α), were performed to address their phylogenetic positions. Our analyses indicated that Malassezia and Moniliella represented two deeply rooted lineages within Ustilaginomycotina and have a sister relationship to both Ustilaginomycetes and Exobasidiomycetes. Those clades are described here as new classes, namely Moniliellomycetes with order Moniliellales, family Moniliellaceae, and genus Moniliella; and Malasseziomycetes with order Malasseziales, family Malasseziaceae, and genus Malassezia. Phenotypic differences support this classification suggesting widely different life styles among the mainly plant pathogenic Ustilaginomycotina.