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Phylogenetic affinity of tree shrews to Glires is attributed to fast evolution rate

Authors :
Liang Gu
Xiaobai Zhang
Jiannan Lin
Meizhu Zheng
Yuefeng Shen
Yu Qiu
Guangfeng Chen
Cizhong Jiang
Xinjie Hu
Weisheng Zheng
Xiaoqing Liu
Source :
Molecular Phylogenetics and Evolution. 71:193-200
Publication Year :
2014
Publisher :
Elsevier BV, 2014.

Abstract

Previous phylogenetic analyses have led to incongruent evolutionary relationships between tree shrews and other suborders of Euarchontoglires. What caused the incongruence remains elusive. In this study, we identified 6845 orthologous genes between seventeen placental mammals. Tree shrews and Primates were monophyletic in the phylogenetic trees derived from the first or/and second codon positions whereas tree shrews and Glires formed a monophyly in the trees derived from the third or all codon positions. The same topology was obtained in the phylogeny inference using the slowly and fast evolving genes, respectively. This incongruence was likely attributed to the fast substitution rate in tree shrews and Glires. Notably, sequence GC content only was not informative to resolve the controversial phylogenetic relationships between tree shrews, Glires, and Primates. Finally, estimation in the confidence of the tree selection strongly supported the phylogenetic affiliation of tree shrews to Primates as a monophyly.

Details

ISSN :
10557903
Volume :
71
Database :
OpenAIRE
Journal :
Molecular Phylogenetics and Evolution
Accession number :
edsair.doi.dedup.....aac821a81af08f806d35b7d73fc8f131