Congruent evidence from α-tubulin and β-tubulin gene phylogenies for a zygomycete origin of microsporidia
Congruent evidence from α-tubulin and β-tubulin gene phylogenies for a zygomycete origin of microsporidia
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DOI：
10.1016/s1087-1845(02)00537-6
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发表时间：
2003-04-01
影响因子：
3
通讯作者：
Keeling, PJ
中科院分区：
文献类型：
--
作者：
Keeling, PJ
微孢子虫的起源，以及真菌主要谱系之间的进化关系，已经用α-微管蛋白和β-微管蛋白进行了分子系统学研究。担子菌、担子菌、子囊菌和微孢子虫都在高支持率下得到了恢复，合子菌始终呈副反应性。这些微孢子虫在接合菌内分枝，并与昆虫目和动物目的成员有亲缘关系。这为微孢子虫是从真菌内部进化而来的提供了支持，然而，由于真菌和微孢子虫的微孢子虫微管蛋白非常不同，因此很难明确地解释微孢子虫的微孢子虫基因。快速进化率是几乎所有研究的微孢子虫基因的特征，因此确定它们的进化史永远不会完全摆脱这样的困难。虽然微管蛋白的系统发育没有提供决定性的结论，但它们确实进一步缩小了微孢子虫的可能起源范围，使之成为接合菌等的祖先。(C)2002年埃尔塞维尔科学公司(美国)。版权所有。
The origin of microsporidia, and the evolutionary relationships among the major lineages of fungi have been examined by molecular phylogeny using alpha-tubulin and beta-tubulin. Chytrids, basidiomycetes, ascomycetes, and microsporidia were all recovered with high support, and the zygomycetes were consistently paraphyletic. The microsporidia were found to branch within zygomycetes, and showed relationships with members of the Entomophthorales and Zoopagales. This provides support for the microsporidia having evolved from within the fungi, however, the tubulin genes are difficult to interpret unambiguously since fungal and microsporidian tubulins are very divergent. Rapid evolutionary rates a characteristic of practically all microsporidian genes studied, so determining their evolutionary history will never be completely free of such difficulties. While the tubulin phylogenies do not provide a decisive conclusion, they do further narrow the probable origin of microsporidia to a zygomycetc-like ancestor. (C) 2002 Elsevier Science (USA). All rights reserved.