A linkage disequilibrium perspective on the genetic mosaic of speciation in two hybridizing Mediterranean white oaks.

ABSTRACT: We analyzed the genetic mosaic of speciation in two hybridizing Mediterranean white oaks from the Iberian Peninsula (Quercus faginea Lamb. and Quercus pyrenaica Willd.). The two species show ecological divergence in flowering phenology, leaf morphology and composition, and in their basic or acidic soil preferences. Ninety expressed sequence tag-simple sequence repeats (EST-SSRs) and eight nuclear SSRs were genotyped in 96 trees from each species. Genotyping was designed in two steps. First, we used 69 markers evenly distributed over the 12 linkage groups (LGs) of the oak linkage map to confirm the species genetic identity of the sampled genotypes, and searched for differentiation outliers. Then, we genotyped 29 additional markers from the chromosome bins containing the outliers and repeate

SUBMITTER: Goicoechea PG 

PROVIDER: S-EPMC4359976 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature