Gene expression landscape of the Brassica napus seed reveals subgenome bias in both space and time.

ABSTRACT: Brassica napus (canola; AnAnCnCn) contains both complete diploid genomes from its progenitors Brassica rapa (An) and Brassica oleracea (Cn). Despite growing knowledge of the gene expression landscape of the B. napus seed, little is known about subgenome bias underpinning the development of specific cells and tissues across the seed lifecycle. Here, we present a large-scale transcriptome atlas of the B. napus seed, including both the maternal seed coat and filial embryo and endosperm subregions. We report on extensive, global Cn subgenome bias throughout development and use homoeologous gene pairs to describe how subgenomic bias differs across subregions. We find that subgenome bias is most prominent during early development and that the maternal subregions experience far more asymmetric tr

SUBMITTER: Ziegler DJ 

PROVIDER: S-EPMC12305542 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature