Interspecific Plastome Recombination Reflects Ancient Reticulate Evolution in Picea (Pinaceae).

ABSTRACT: Plastid sequences are a cornerstone in plant systematic studies and key aspects of their evolution, such as uniparental inheritance and absent recombination, are often treated as axioms. While exceptions to these assumptions can profoundly influence evolutionary inference, detecting them can require extensive sampling, abundant sequence data, and detailed testing. Using advancements in high-throughput sequencing, we analyzed the whole plastomes of 65 accessions of Picea, a genus of ∼35 coniferous forest tree species, to test for deviations from canonical plastome evolution. Using complementary hypothesis and data-driven tests, we found evidence for chimeric plastomes generated by interspecific hybridization and recombination in the clade comprising Norway spruce (P. abies) and 10 other spe

SUBMITTER: Sullivan AR 

PROVIDER: S-EPMC5455968 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature