Pattern and variation in simple sequence repeat (SSR) at different genomic regions and its implications to maize evolution and breeding.

ABSTRACT:

Background

Repetitive DNA sequences accounts for over 80% of maize genome. Although simple sequence repeats (SSRs) account for only 0.03% of the genome, they have been widely used in maize genetic research and breeding as highly informative codominant DNA markers. The genome-wide distribution and polymorphism of SSRs are not well studied due to the lack of high-quality genome DNA sequence data.

Results

In this study, using data from high-quality de novo-sequenced maize genomes of five representative maize inbred lines, we revealed that SSRs were more densely present in telomeric region than centromeric region, and were more abundant in genic sequences than intergenic sequences. On genic sequences, tri- and hexanucleotide motifs were more abundant in CDS sequence and some mon

SUBMITTER: Zhao M 

PROVIDER: S-EPMC10029318 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature