A six nuclear gene phylogeny of Citrus (Rutaceae) taking into account hybridization and lineage sorting.

ABSTRACT:

Background

Genus Citrus (Rutaceae) comprises many important cultivated species that generally hybridize easily. Phylogenetic study of a group showing extensive hybridization is challenging. Since the genus Citrus has diverged recently (4-12 Ma), incomplete lineage sorting of ancestral polymorphisms is also likely to cause discrepancies among genes in phylogenetic inferences. Incongruence of gene trees is observed and it is essential to unravel the processes that cause inconsistencies in order to understand the phylogenetic relationships among the species.

Methodology and principal findings

(1) We generated phylogenetic trees using haplotype sequences of six low copy nuclear genes. (2) Published simple sequence repeat data were re-analyzed to study population structure and th

SUBMITTER: Ramadugu C 

PROVIDER: S-EPMC3713030 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature