Phylogenetic relationships of Hemiptera inferred from mitochondrial and nuclear genes

Phylogenetic relationships of Hemiptera inferred from mitochondrial and nuclear genes
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从线粒体和核基因推断半翅目的系统发育关系

DOI:
10.3109/19401736.2015.1089538
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发表时间:
2016-11
影响因子:
--
通讯作者:
Fan Song
Fan Song
中科院分区:
生物学4区
文献类型:
--
作者:
Song Nan;Hu Li;Wanzhi Cai;Fengming Yan;Jianyun Wang;Fan Song

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摘要本研究分别基于线粒体蛋白质编码基因和核18S rRNA基因的扩增,重建了半翅目昆虫的发育。不同谱系的变化率可能与长枝吸引(LBA)效应有关,并导致不同类型数据对后代发生的估计相互冲突。为了减少系统偏差对拓扑结构推断的潜在影响,在系统发育重建中使用了各种数据编码方案、位点去除方法和不同的算法。我们发现,外类群Phthiraptera,Thysanoptera,和内类群Sternorrhyncha共享类似的基础组成,并表现出“长分支”相对于其他半翅目。因此,这些群体之间的长枝吸引被怀疑是导致回收半翅目在同质模型下失败的原因。与此相反,一个单系半翅目时,异质模型在分析中使用的支持。虽然更高层次的系统发育关系内半翅目仍有待回答,分析之间的共识开始收敛于一个稳定的系统发育。
Abstract Here, we reconstructed the Hemiptera phylogeny based on the expanded mitochondrial protein-coding genes and the nuclear 18S rRNA gene, separately. The differential rates of change across lineages may associate with long-branch attraction (LBA) effect and result in conflicting estimates of phylogeny from different types of data. To reduce the potential effects of systematic biases on inferences of topology, various data coding schemes, site removal method, and different algorithms were utilized in phylogenetic reconstruction. We show that the outgroups Phthiraptera, Thysanoptera, and the ingroup Sternorrhyncha share similar base composition, and exhibit “long branches” relative to other hemipterans. Thus, the long-branch attraction between these groups is suspected to cause the failure of recovering Hemiptera under the homogeneous model. In contrast, a monophyletic Hemiptera is supported when heterogeneous model is utilized in the analysis. Although higher level phylogenetic relationships within Hemiptera remain to be answered, consensus between analyses is beginning to converge on a stable phylogeny.
五翅目(昆虫纲:半翅目:异翅目)线粒体基因组的比较和系统基因组研究。
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