Multigenic phylogeny and analysis of tree incongruences in Triticeae (Poaceae).

ABSTRACT:

Background

Introgressive events (e.g., hybridization, gene flow, horizontal gene transfer) and incomplete lineage sorting of ancestral polymorphisms are a challenge for phylogenetic analyses since different genes may exhibit conflicting genealogical histories. Grasses of the Triticeae tribe provide a particularly striking example of incongruence among gene trees. Previous phylogenies, mostly inferred with one gene, are in conflict for several taxon positions. Therefore, obtaining a resolved picture of relationships among genera and species of this tribe has been a challenging task. Here, we obtain the most comprehensive molecular dataset to date in Triticeae, including one chloroplastic and 26 nuclear genes. We aim to test whether it is possible to infer phylogenetic relationships

SUBMITTER: Escobar JS 

PROVIDER: S-EPMC3142523 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature