The evolution of stramenopiles and alveolates as derived by "substitution rate calibration" of small ribosomal subunit RNA.
The evolution of stramenopiles and alveolates as derived by "substitution rate calibration" of small ribosomal subunit RNA.
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通过小核糖体亚基 RNA 的“取代率校准”得出原生藻菌和肺泡的进化。
DOI：
10.1007/bf02198846
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发表时间：
1996
影响因子：
3.9
通讯作者：
R. De Wachter
中科院分区：
文献类型：
--
作者：
Y. Van de Peer;Gert Van der Auwera;R. De Wachter
估计了750个真核生物核糖体小亚基RNA序列比对中各个位置的取代率。从由此产生的速率分布，一个方程推导出一个更精确的序列相异性和进化距离之间的关系比迄今为止。根据这个新方程计算的小核糖体亚基RNA序列从纤毛虫，apicomplexans，腰鞭毛虫，卵菌，丝壶菌，bicosoecids，naphthuloids，和heterokont藻类的进化距离的基础上构建的树显示出更一致的树拓扑结构比树构建在没有“取代率校准”。特别是，它们不会遭受由于存在极长分支而引起的异常。
The substitution rate of the individual positions in an alignment of 750 eukaryotic small ribosomal subunit RNA sequences was estimated. From the resulting rate distribution, an equation was derived that gives a more precise relationship between sequence dissimilarity and evolutionary distance than hitherto available. Trees constructed on the basis of evolutionary distances computed by this new equation for small ribosomal subunit RNA sequences from ciliates, apicomplexans, dinoflagellates, oomycetes, hyphochytriomycetes, bicosoecids, labyrinthuloids, and heterokont algae show a more consistent tree topology than trees constructed in the absence of “substitution rate calibration.” In particular, they do not suffer from anomalies caused by the presence of extremely long branches.