期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 71, 期 -, 页码 142-148出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2013.11.013
关键词
Missing data; Phylogeny; Multi-gene; Ciliophora; Paramecium
资金
- Natural Science Foundation of China [41006098, 31030059, 31222050, 41176119]
- Research Fund for the Doctoral Program of Higher Education Project [20104407120006]
- China Postdoctoral Science Foundation [20110491623]
- Foundation for Distinguished Young Talents in Higher Education of Guangdong, China [LYM10060, 2012LYM_0049]
In order to assess how dataset-selection for multi-gene analyses affects the accuracy of inferred phylogenetic trees in ciliates, we chose five genes and the genus Paramecium, one of the most widely used model protist genera, and compared tree topologies of the single- and multi-gene analyses. Our empirical study shows that: (1) Using multiple genes improves phylogenetic accuracy, even when their one-gene topologies are in conflict with each other. (2) The impact of missing data on phylogenetic accuracy is ambiguous: resolution power and topological similarity, but not number of represented taxa, are the most important criteria of a dataset for inclusion in concatenated analyses. (3) As an example, we tested the three classification models of the genus Paramecium with a multi-gene based approach, and only the monophyly of the subgenus Paramecium is supported. (C) 2013 Elsevier Inc. All rights reserved.
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