Transgressive expression and dosage effect of A09 chromosome genes and their homoeologous genes influence the flowering time of resynthesized allopolyploid Brassica napus.

ABSTRACT:

Background

The genomes of allopolyploids newly formed through hybridization and polyploidization exhibit substantial changes including those at genetic and epigenetic levels. These alterations may affect their gene expression patterns, leading to nonadditive gene expression. Currently, only a few reports are available on the impact of nonadditive gene expressions on traits.

Results

Using six isogenic resynthesized Brassica napus lines across the first 10 generations, we studied the impact of gene expression patterns on flowering time. The expression levels of a group of genes, located on chromosome A09, were significantly positively correlated with flowering time. According to the expression analysis, the expression levels of the homologous pairs of 139 genes on chromosome A

SUBMITTER: Bai Y 

PROVIDER: S-EPMC11837392 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature