Genome Size Variation and Comparative Genomics Reveal Intraspecific Diversity in Brassica rapa.

ABSTRACT: Traditionally, reference genomes in crop species rely on the assembly of one accession, thus occulting most of intraspecific diversity. However, rearrangements, gene duplications, and transposable element content may have a large impact on the genomic structure, which could generate new phenotypic traits. Comparing two Brassica rapa genomes recently sequenced and assembled using long-read technology and optical mapping, we investigated structural variants and repetitive content between the two accessions and genome size variation among a core collection. We explored the structural consequences of the presence of large repeated sequences in B. rapa 'Z1' genome vs. the B. rapa 'Chiifu' genome, using comparative genomics and cytogenetic approaches. First, we showed that l

SUBMITTER: Boutte J 

PROVIDER: S-EPMC7689015 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature