›› 2016, Vol. 43 ›› Issue (1): 191-196.doi: 10.16431/j.cnki.1671-7236.2016.01.028

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Cloning of Inhibin-α Gene and its mRNA Expression Pattern in the Ovary of Congjiang Xiang Pig

ZHANG Xiao1,2, SU Yan1,2, YANG Shi-bin1,2, WANG Jia-fu1,3, RAN Xue-qin3   

  1. 1. Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, China;
    2. College of Life Sciences, Guizhou University, Guiyang 550025, China;
    3. College of Animal Science, Guizhou University, Guiyang 550025, China
  • Received:2015-08-10 Online:2016-01-20 Published:2016-01-23

Abstract: To reveal the relationship between inhibin-α(INHA) gene and the reproductive traits of Congjiang Xiang pig, INHA gene was cloned and sequenced taking the genomic DNA of Congjiang Xiang pigs as templates by polymerase chain reaction(PCR) method.The polymorphisms of INHA gene were tested in Congjiang Xiang pig populations with high-litter size and low-litter size using allele-specific PCR(AS-PCR) method.The expression profile of INHA gene in ovaries was detected from Congjiang Xiang pigs with high-litter yiled or low-litter yiled by Real-time PCR method.The complete coding region of INHA gene was 1095 bp in length, which coded for 364 amino acid residues.Compared with the known sequence, two candidate sites, G359A and A373G, were found out from exon 2 region of INHA gene in Congjiang Xiang pig.After investigation for the two sites in a large population, the frequency of alleles between two populations was not significant and without obvious relativity with the litter yiled of Congjiang Xiang pig.However, the INHA mRNA level in the ovary of Congjiang Xiang pig with high-litter yiled was higher than that with low-litter yiled.It suggested that INHA gene was much conserved, INHA gene expression level might be concerned for the regulation of ovary growth and follicle development in Congjiang Xiang pig breed.

Key words: Congjiang Xiang pig; inhibin; gene cloning; ovary; SNP

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