Factors affecting the concordance between orthologous gene trees and species tree in bacteria.

ABSTRACT:

Background

As originally defined, orthologous genes implied a reflection of the history of the species. In recent years, many studies have examined the concordance between orthologous gene trees and species trees in bacteria. These studies have produced contradictory results that may have been influenced by orthologous gene misidentification and artefactual phylogenetic reconstructions. Here, using a method that allows the detection and exclusion of false positives during identification of orthologous genes, we address the question of whether putative orthologous genes within bacteria really reflect the history of the species.

Results

We identified a set of 370 orthologous genes from the bacterial order Rhizobiales. Although manifesting strong vertical signal, almost every o

SUBMITTER: Castillo-Ramirez S 

PROVIDER: S-EPMC2614993 | biostudies-literature | 2008 Oct

REPOSITORIES: biostudies-literature