Effects of asymmetric nuclear introgression, introgressive mitochondrial sweep, and purifying selection on phylogenetic reconstruction and divergence estimates in the Pacific clade of Locustella warblers.
Effects of asymmetric nuclear introgression, introgressive mitochondrial sweep, and purifying selection on phylogenetic reconstruction and divergence estimates in the Pacific clade of Locustella warblers.
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DOI：
10.1371/journal.pone.0122590
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Koblik EA
中科院分区：
文献类型：
--
作者：
Drovetski SV;Semenov G;Red'kin YA;Sotnikov VN;Fadeev IV;Koblik EA
当孤立的，但生殖相容的人口扩大地理和满足，模拟预测不对称的中性位点渗入从本地到入侵taxon.Genetic渗入可能会影响系统发育重建模糊的拓扑结构和分歧的估计。我们结合系统发育分析的序列从一个mtDNA和12个nuDNA位点之间的基因流分析5种太平洋蝗莺测试存在的遗传渗入和它的影响树的拓扑结构和分歧估计。我们的数据表明，nuDNA渐渗是大量的和不对称的所有成员之间的超种组，而mtDNA没有表现出渐渗，除了一个单一的物种对，入侵者的mtDNA被当地物种的mtDNA。这种mtDNA的渐渗扫描具有与nuDNA渐渗相反的方向，并导致当地物种的mtDNA单倍型与入侵者的mtDNA单倍型并系。多位点nuDNA物种树解决了所有种间和种内关系，尽管大量的基因渗入。然而，节点年龄的物种树上可能被低估的节点年龄估计基于非渗入mtDNA和渗入nuDNA的差异所建议的。反过来，渐渗扫描和强大的纯化选择似乎延长了mtDNA基因树的内部分支。
When isolated but reproductively compatible populations expand geographically and meet, simulations predict asymmetric introgression of neutral loci from a local to invading taxon. Genetic introgression may affect phylogenetic reconstruction by obscuring topology and divergence estimates. We combined phylogenetic analysis of sequences from one mtDNA and 12 nuDNA loci with analysis of gene flow among 5 species of Pacific Locustella warblers to test for presence of genetic introgression and its effects on tree topology and divergence estimates. Our data showed that nuDNA introgression was substantial and asymmetrical among all members of superspecies groups whereas mtDNA showed no introgression except a single species pair where the invader's mtDNA was swept by mtDNA of the local species. This introgressive sweep of mtDNA had the opposite direction of the nuDNA introgression and resulted in the paraphyly of the local species' mtDNA haplotypes with respect to those of the invader. Тhe multilocus nuDNA species tree resolved all inter- and intraspecific relationships despite substantial introgression. However, the node ages on the species tree may be underestimated as suggested by the differences in node age estimates based on non-introgressing mtDNA and introgressing nuDNA. In turn, the introgressive sweep and strong purifying selection appear to elongate internal branches in the mtDNA gene tree.
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DOI：
10.1111/j.1095-8312.1999.tb01160.x
发表时间：
1999-09-01
影响因子：
1.9
作者：
Hewitt, GM
通讯作者：
Hewitt, GM
影响因子：
3.3
作者：
Currat, Mathias;Ruedi, Manuel;Excoffier, Laurent
通讯作者：
Excoffier, Laurent
影响因子：
4.9
作者：
Clement, M;Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
2.2
作者：
Drovetski, SV;Pearson, SF;Rohwer, S
通讯作者：
Rohwer, S
影响因子：
10.7
作者：
Kutschera VE;Bidon T;Hailer F;Rodi JL;Fain SR;Janke A
通讯作者：
Janke A