The tree versus the forest: the fungal tree of life and the topological diversity within the yeast phylome.

ABSTRACT: A recurrent topic in phylogenomics is the combination of various sequence alignments to reconstruct a tree that describes the evolutionary relationships within a group of species. However, such approach has been criticized for not being able to properly represent the topological diversity found among gene trees. To evaluate the representativeness of species trees based on concatenated alignments, we reconstruct several fungal species trees and compare them with the complete collection of phylogenies of genes encoded in the Saccharomyces cerevisiae genome. We found that, despite high levels of among-gene topological variation, the species trees do represent widely supported phylogenetic relationships. Most topological discrepancies between gene and species trees are concentrated in certain

SUBMITTER: Marcet-Houben M 

PROVIDER: S-EPMC2629814 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature