Draft genomes of two outcrossing wild rice, Oryza rufipogon and O. longistaminata, reveal genomic features associated with mating-system evolution.

ABSTRACT: Oryza rufipogon and O. longistaminata are important wild relatives of cultivated rice, harboring a promising source of novel genes for rice breeding programs. Here, we present de novo assembled draft genomes and annotation of O. rufipogon and O. longistaminata. Our analysis reveals a considerable number of lineage-specific gene families associated with the self-incompatibility (SI) and formation of reproductive separation. We show how lineage-specific expansion or contraction of gene families with functional enrichment of the recognition of pollen, thus enlightening their reproductive diversification. We documented a large number of lineage-specific gene families enriched in salt stress, antifungal response, and disease resistance. Our comparative analysis furth

SUBMITTER: Li W 

PROVIDER: S-EPMC7287411 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature