Repetitive DNA content in the maize genome is uncoupled from population stratification at SNP loci.

ABSTRACT:

Background

Repetitive DNA is a major component of plant genomes and is thought to be a driver of evolutionary novelty. Describing variation in repeat content among individuals and between populations is key to elucidating the evolutionary significance of repetitive DNA. However, the cost of producing references genomes has limited large-scale intraspecific comparisons to a handful of model organisms where multiple reference genomes are available.

Results

We examine repeat content variation in the genomes of 94 elite inbred maize lines using graph-based repeat clustering, a reference-free and rapid assay of repeat content. We examine population structure using genome-wide repeat profiles, and demonstrate the stiff-stalk and non-stiff-stalk heterotic populations are homogenous

SUBMITTER: Renny-Byfield S 

PROVIDER: S-EPMC6993463 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature