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PCR-RFLP Polymorphism of Promoter Region of MSTN Gene in Southwest Pony

XU Long-xin1, YANG Sheng-lin1,2, YANG Hai-bing1, LI Ai-ping1, WANG Zhong-xia1   

  1. 1. College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, China
  • Received:2012-03-05 Online:2012-09-20 Published:2012-09-18

Abstract: In this present study, promoter region of myostation(MSTN) gene of Guizhou pony, Debao pony and Ningqiang pony were analyzed by PCR-RFLP. The results indicated that there was one SspⅠdigestion site in the 204 bp amplified fragment. An T→C mutation at the site 156 bp of this gene by DNA sequencing which produced two sorts of genotypes, AA and AB, however, BB genotype was not founded in this study. The genotype frequency of AB in Guizhou pony and Ningqiang pony were higher than AA, while AA genotype was preponderant in Debao pony. The allele frequency of A were higher than B in all these three pony breeds. Guizhou pony and Debao pony were at Hardy-Weinberg equilibrium (P>0.05), but Ningqiang pony was significantly different (P<0.05).

Key words: Southwest pony; MSTN gene; PCR-RFLP; polymorphism

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