Population Genomics in Wild Tomatoes-The Interplay of Divergence and Admixture.

ABSTRACT: Hybridization between closely related plant species is widespread, but the outcomes of hybridization are not fully understood. This study investigates phylogenetic relationships and the history of hybridization in the wild tomato clade (Solanum sect. Lycopersicon). We sequenced RNA from individuals of 38 different populations and, by combining this with published data, build a comprehensive genomic data set for the entire clade. The data indicate that many taxa are not monophyletic and many individuals are admixed due to repeated hybridization. The most polymorphic species, Solanum peruvianum, has two genetic and geographical subpopulations, while its sister species, Solanum chilense, has distinct coastal populations and reduced heterozygosity indicating a recent expansion south following

SUBMITTER: Beddows I 

PROVIDER: S-EPMC5714242 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature