Comparative transcriptomic analysis reveals the molecular mechanism underlying seedling biomass heterosis in Brassica napus.

ABSTRACT:

Background

Heterosis is an important biological phenomenon in which the hybrids exceed the parents in many traits. However, the molecular mechanism underlying seedling heterosis remains unclear.

Results

In the present study, we analyzed the leaf transcriptomes of strong hybrids (AM, HM) and weak hybrids (CM, HW) and their parents (A, C, H, M, and W) at two periods. Phenotypically, hybrids had obvious biomass heterosis at the seedling stage, with statistically significant differences between the strong and weak hybrids. The transcriptomic analysis demonstrated that the number of differentially expressed genes (DEGs) between parents was the highest. Further analysis showed that most DEGs were biased toward parental expression. The biological processes of the two periods were s

SUBMITTER: Xiong J 

PROVIDER: S-EPMC9178846 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature