Mutation is the Main Driving Force in the Diversification of the Vibrio splendidus Clade.
Mutation is the Main Driving Force in the Diversification of the Vibrio splendidus Clade.
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DOI：
10.1264/jsme2.me09128
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发表时间：
2009-12
影响因子：
2.2
通讯作者：
T. Sawabe;S. Koizumi;Y. Fukui;S. Nakagawa;E. Ivanova;K. Kita-Tsukamoto;K. Kogure;F. Thompson
中科院分区：
文献类型：
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作者：
T. Sawabe;S. Koizumi;Y. Fukui;S. Nakagawa;E. Ivanova;K. Kita-Tsukamoto;K. Kogure;F. Thompson
灿烂弧菌分支是弧菌目中最大的分支，由11个描述的物种组成（25）。这些物种的多样化可能发生在2.6亿年前。这个分支中物种形成的主要驱动力从未被研究过。测定了Splendidus类群9个种16个菌株的群体生物学参数（群体基础重组率（ρ）、群体基础突变率（θ）和关联指数（Ia））。个体基因同源性的比较表明，在树的拓扑结构，这表明物种之间的重组发生显着的不一致。在4个位点上检测到种间同源重组。但突变率θ高于重组率ρ，表明突变是锦绣中华近缘种多样性的主要驱动力。
The Vibrio splendidus clade is the biggest in Vibrionales composed of 11 described species (25). Diversification of these species may have occurred 260 million years ago. The main driving forces of speciation in this clade have never been studied. Population biological parameters (population base recombination rate (ρ), population base mutation rate (θ), and index of association (Ia)) were determined among 16 strains of 9 defined species in the Splendidus cluster. A comparison of individual gene phylogeny indicated significant incongruence in tree topology, which suggests the occurrence of recombination between species. Homologous recombination between species was detected at four loci. However, the mutation rate θ was higher than the recombination rate ρ, suggesting that mutation is the main driving force in the diversification of V. splendidus-related species.