Biotechnology Bulletin ›› 2015, Vol. 31 ›› Issue (6): 165-169.doi: 10.13560/j.cnki.biotech.bull.1985.2015.06.026

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Polymorphism Analysis of MSTN Gene Exons of Ganzhou Simmental Cattle in Gansu Province

Li Jiyou1,4, Liang Chunhua2, Liu Xia1,3, Sun Xuejing2, Du Xiaohua1,2   

  1. 1. Gansu Key Laboratory of Herbivorous Animal Biotechnology,Lanzhou 730070;2. College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070;3. College of Life Science and Technology,Gansu Agricultural University,Lanzhou 730070;4 Gansu Provincial Bureau of Animal Husbandry Industry Management,Lanzhou 730030
  • Received:2014-10-29 Online:2015-06-19 Published:2015-06-20

Abstract: PCR-SSCP(single-strand conformational polymorphism)was used to detect the genetic polymorphism in 3 exons of myostatin(MSTN)gene in 50 individuals of Ganzhou Simmental cattle in Gansu. The alleles in a population were verified by sequencing, which provided the theoretical evidences for investigating the correlation between MSTN gene of Simmental cattle and meat quality. The results showed that the polymorphism in the exon 2 was controlled by B and C alleles, which formed 3 genotypes of BB, CC and BC with the frequencies at 0. 22(11/50), 0. 64(32/50)and 0. 14(7/50)respectively. The polymorphism in the exon 1 and exon 3 was controlled by A and D allele respectively, which formed AA and DD genotypes with frequencies at 1(50/50). Sequence analysis indicated that there was one single nucleotide mutation of C to T at 41st nucleotide in the exon 2 of Ganzhou Simmental cattle;however this did not lead to the amino acid changed, so it was a synonymous mutation. There were no mutations in the exon 1 and exon 3. The statistical results showed that the exon 2 of MSTN gene in 50 individuals of Ganzhou Simmental cattle had a moderate level of polymorphism, and the exon 1 and exon 3 had no polymorphism.

Key words: MSTN gene, exon, genetic polymorphism, Simmental cattle