Quartet mapping and the extent of lateral transfer in bacterial genomes

被引：19

作者：

Daubin, V ^{[1
]}

Ochman, H ^{[1
]}

机构：

[1] Univ Arizona, Dept Biochem & Mol Biophys, Tucson, AZ USA

来源：

MOLECULAR BIOLOGY AND EVOLUTION | 2004年 / 21卷 / 01期

关键词：

bacterial phylogeny; maximum likelihood; quartet trees; lateral gene transfer;

D O I：

10.1093/molbev/msg234

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Several recent analyses have used quartet-based methods to assess the congruence among phylogenies derived for large sets of genes from prokaryotic genomes. The principal conclusion from these studies is that lateral gene transfer (LGT) has blurred prokaryotic phylogenies to such a degree that the darwinian scheme of treelike evolution might be abandoned in favor of a net or web. Here, we focus on one of these methods, quartet mapping, and show that its application can lead to overestimation of the extent of inferred LGT in prokaryotes, particularly when applied to distantly related taxa.

引用

页码：86 / 89

页数：4

共 22 条

[1] Instability of quartet analyses of molecular sequence data by the maximum likelihood method: The Cetacea/Artiodactyla relationships [J].