Homoeologue expression insights into the basis of growth heterosis at the intersection of ploidy and hybridity in Cyprinidae.

ABSTRACT: Hybridization and polyploidization are considered important driving forces that form new epigenetic regulations. To study the changing patterns of expression accompanying hybridization and polyploidization, we used RNA-seq and qRT-PCR to investigate global expression and homoeologue expression in diploid and tetraploid hybrids of Carassius auratus red var. (♀) (R) and Cyprinus carpio (♂) (C). By comparing the relative expression levels between the hybrids and their parents, we defined the expression level dominance (ELD) and homoeologue expression bias (HEB) in liver tissue. The results showed that polyploidization contributed to the conversion of homoeologue ELD. In addition, hybridization had more effect on the change in HEB than polyploidization, while polyploidization had more effect o

SUBMITTER: Ren L 

PROVIDER: S-EPMC4893626 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature