Genomic patterns of nucleotide diversity in divergent populations of U.S. weedy rice.

ABSTRACT:

Background

Weedy rice (red rice), a conspecific weed of cultivated rice (Oryza sativa L.), is a significant problem throughout the world and an emerging threat in regions where it was previously absent. Despite belonging to the same species complex as domesticated rice and its wild relatives, the evolutionary origins of weedy rice remain unclear. We use genome-wide patterns of single nucleotide polymorphism (SNP) variation in a broad geographic sample of weedy, domesticated, and wild Oryza samples to infer the origin and demographic processes influencing U.S. weedy rice evolution.

Results

We find greater population structure than has been previously reported for U.S. weedy rice, and that the multiple, genetically divergent populations have separate origins. The two main U.S.

SUBMITTER: Reagon M 

PROVIDER: S-EPMC2898691 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature