Molecular evolution of the fungi: relationship of the Basidiomycetes, Ascomycetes, and Chytridiomycetes.
Molecular evolution of the fungi: relationship of the Basidiomycetes, Ascomycetes, and Chytridiomycetes.
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真菌的分子进化：担子菌、子囊菌和壶菌的关系。
DOI：
10.1093/oxfordjournals.molbev.a040720
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发表时间：
1992
影响因子：
10.7
通讯作者：
White,TJ
中科院分区：
文献类型：
--
作者：
Bowman,BH;Taylor,JW;Brownlee,AG;Lee,J;Lu,SD;White,TJ
由于真菌和原生生物的简单形态和趋同特征，建立真菌和原生生物的亲缘关系常常被证明是困难的。我们使用核小亚基核糖体RNA基因的DNA序列，以确定被认为是真菌-担子菌，子囊菌和壶菌-和评估Neocallimastix，一个经济上重要的厌氧瘤胃微生物的分类是有争议的分类地位的三个主要类别的生物体之间的系统发育关系。担子菌和子囊菌是两类无鞭毛真菌，是最密切相关的类群。壶菌虽然有鞭毛，但与这些高等真菌而不是原生生物同属一类。Neocallimastix是一种缺乏线粒体的真核生物，被分类为原生生物或真菌，与Spizellomycetales中的Chytridiomycete真菌显示出最接近的分子亲和力。
Establishing the phylogeny of fungi and protists often has proved difficult owing to the simple morphologies and convergent characters in these organisms. We used DNA sequences of nuclear small-subunit ribosomal RNA genes to determine phylogenetic relationships among three major classes of organisms considered to be fungi--Basidiomycetes, Ascomycetes and Chytridiomycetes--and to assess the taxonomic position of Neocallimastix, an economically important anaerobic rumen microorganism whose classification is controversial. The Basidiomycetes and Ascomycetes, two classes of nonflagellated fungi, are the most closely related taxa. Chytridiomycetes, though bearing flagella, group with these higher fungi rather than with the protists. Neocallimastix, a eukaryote lacking mitochondria and variously classified as a protist or as a fungus, shows closest molecular affinities with the Chytridiomycete fungi in the order Spizellomycetales.