Origins and geographic diversification of African rice (Oryza glaberrima).

ABSTRACT: Rice is a staple food for the majority of the world's population. Whereas Asian rice (Oryza sativa) has been extensively studied, the exact origins of African rice (Oryza glaberrima) are still contested. Previous studies have supported either a centric or a non-centric geographic origin of African rice domestication. Here we review the evidence for both scenarios through a critical reassessment of 206 whole genome sequences of domesticated and wild African rice. While genetic diversity analyses support a severe bottleneck caused by domestication, signatures of recent and strong positive selection do not unequivocally point to candidate domestication genes, suggesting that domestication proceeded differently than in Asian rice-either by selection on different alleles, or different modes of

SUBMITTER: Veltman MA 

PROVIDER: S-EPMC6402627 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature