Introgression among North American wild grapes (Vitis) fuels biotic and abiotic adaptation.

ABSTRACT:

Background

Introgressive hybridization can reassort genetic variants into beneficial combinations, permitting adaptation to new ecological niches. To evaluate evolutionary patterns and dynamics that contribute to introgression, we investigate six wild Vitis species that are native to the Southwestern United States and useful for breeding grapevine (V. vinifera) rootstocks.

Results

By creating a reference genome assembly from one wild species, V. arizonica, and by resequencing 130 accessions, we focus on identifying putatively introgressed regions (pIRs) between species. We find six species pairs with signals of introgression between them, comprising up to ~ 8% of the extant genome for some pairs. The pIRs tend to be gene poor, located in regions of high recombination and enr

SUBMITTER: Morales-Cruz A 

PROVIDER: S-EPMC8414701 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature