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Differentially expressed genes between chicken hybrids and their parents and relationship with heterosis

Published online by Cambridge University Press:  12 February 2007

Sun Dong-Xiao
Affiliation:
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China
Wang Dong
Affiliation:
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China
Yu Ying
Affiliation:
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China
Xu Gui-Yun
Affiliation:
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China
Li Jun-Ying
Affiliation:
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China
Corresponding
E-mail address:

Abstract

mRNA differential display was used to analyse differences of gene expression between cross combinations, EC and CE, and their parental inbreeds, White Plymouth Rock (EE) and Silkies (CC). Three genes specifically expressed and one gene over-expressed in hybrids were found. By cloning, sequencing and BLAST analysis, one specific expression cDNA band was identified as the cytosolic isocitrate dehydrogenase gene, two were new genes of unknown function, and the over-expressed one was a proteosome subunit p112 gene. The results imply that functional and regulatory genes, expressed or over-expressed in chicken hybrids, are related to heterosis of some carcass traits.

Type
Research Article
Copyright
Copyright © China Agricultural University and Cambridge University Press 2005

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