Pangenomic structural variant patterns reflect evolutionary diversification in Brassica napus.

ABSTRACT:

Background

Understanding genetic diversity is crucial for enhancing crop productivity. This study explores species-wide genome structural variation (SV) and its role in intraspecific and ecogeographical diversification of Brassica napus, a recently evolved, globally important allopolyploid crop.

Results

We perform whole-genome long-read DNA-sequencing and construct reference-guided genome assemblies for 94 accessions, including winter-type, spring-type, and East Asian oilseed, along with kale forms and swedes/rutabagas. We investigate pangenomic patterns of SVs and determine pangenome-wide distributions and frequencies of inversions, gene presence-absence variants, and collective SVs including insertions and deletions. Results reveal pangenome-wide patterns for insertions, d

SUBMITTER: Afsharyan NP 

PROVIDER: S-EPMC12599057 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature