Asian wild rice is a hybrid swarm with extensive gene flow and feralization from domesticated rice.

ABSTRACT: The domestication history of rice remains controversial, with multiple studies reaching different conclusions regarding its origin(s). These studies have generally assumed that populations of living wild rice, O. rufipogon, are descendants of the ancestral population that gave rise to domesticated rice, but relatively little attention has been paid to the origins and history of wild rice itself. Here, we investigate the genetic ancestry of wild rice by analyzing a diverse panel of rice genomes consisting of 203 domesticated and 435 wild rice accessions. We show that most modern wild rice is heavily admixed with domesticated rice through both pollen- and seed-mediated gene flow. In fact, much presumed wild rice may simply represent different stages of feralized domesticated rice. In

SUBMITTER: Wang H 

PROVIDER: S-EPMC5453317 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature