Host-associated genetic differentiation in Thrips tabaci (Insecta; Thysanoptera), as determined from mtDNA sequence data
Host-associated genetic differentiation in Thrips tabaci (Insecta; Thysanoptera), as determined from mtDNA sequence data
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DOI：
10.1038/sj.hdy.6800512
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发表时间：
2004-10-01
期刊：
影响因子：
3.8
通讯作者：
Frey, JE
中科院分区：
文献类型：
--
作者：
Brunner, PC;Chatzivassiliou, EK;Frey, JE
我们分别从烟草和韭菜中采集了22个烟蓟马群体，并对其进行了寄主相关遗传分化试验。基于线粒体细胞色素氧化酶I基因片段序列变异的聚类分析和单倍型网络得出了三个主要的进化谱系；其中两个明显与韭菜有关，第三个与烟草有关。这些遗传发现证实了最近关于烟粉虱种群在寄主-植物偏好和它们作为番茄斑病病毒载体的能力方面的异质性的实验观察。估计的分化时间表明，这些谱系的古代分化可以追溯到2800万至2100万年前的中新世。这些世系间的F-ST值在0.824 ~ 0.954之间
We tested for host-associated genetic differentiation in 22 populations of Thrips tabaci collected from tobacco and leek, respectively. Clustering analyses and haplotype networks based on sequence variation at a fragment of the mitochondrial cytochrome oxidase I gene yielded three major evolutionary lineages; two were clearly associated with leek and the third with tobacco. These genetic findings corroborated recent experimental observations on the heterogeneity of T. tabaci populations with regard to host-plant preference and their capacity to be vectors for tomato spotted wilt virus. Estimated divergence times suggested an ancient divergence of these lineages dating back to the Miocene 28 - 21 million years ago. F-ST values between these lineages ranged between 0.824 and 0.954 (P