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Position: Home > Articles > Polymorphism of the γ-IFN gene exon 4 in Hezuo Pigs Animal Husbandry & Veterinary Medicine 2011,43 (12) 24-27

合作猪γ-IFN基因外显子4多态性分析

作  者:
马小军;李娟娟;王立贤;罗玉柱;魏恒;张小丽;李小飞
单  位:
渭南职业技术学院畜牧兽医系;中国农业科学院北京畜牧兽医研究所;甘肃农业大学动物医学院;甘肃省草食动物生物技术重点实验室
关键词:
合作猪;γ-IFN基因;PCR-SSCP;多态性
摘  要:
为了研究合作猪γ-IFN基因的多态性,确定其等位基因数、核苷酸多态位点,各等位基因是否符合Hardy-Weinberg平衡状态、多态信息含量、有效等位基因数和杂合度,采用PCR-SSCP方法检测了138头合作猪γ-IFN基因外显子4的等位基因,并克隆、测序群体内变异产生的各等位基因序列,就基因型和等位基因单倍型序列数据开展分析。序列比对分析发现5个核苷酸多态位点,其中5 284 bp(A→G)、5 341 bp(G→A)、5 371 bp(A→G)为新发现突变位点。试验群体发现4种基因型AA、AB、AC和AD,其中A等位基因频率为0.963 8,为优势等位基因。经χ2适合性检验,该群体处于Hardy-Weinberg平衡状态(P>0.05)。γ-IFN基因遗传多态指数中,杂合度(He)、多态信息含量(PIC)、有效等位基因数(Ne)均较低,表明合作猪γ-IFN基因比较保守。
译  名:
Polymorphism of the γ-IFN gene exon 4 in Hezuo Pigs
作  者:
MA Xiao-jun1,2,LI Juan-juan3,WANG Li-xian4,LUO Yu-zhu2*,WEI Heng3,ZHANG Xiao-li1,LI Xiao-fei1(1.College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070,China; 2.Gansu Provence Key Laboratory of Grazing Animal Biotechnology,Lanzhou 730070,China; 3.Department of Animal Husbandry and Veterinary Medicine,Weinan Vocational and Technical College, Weinan 714000,China; 4.Institute of Animal Sciences and Veterinary Medicine,Chinese Academy of Agricultural Sciences, Beijing 100193,China)
关键词:
Hezuo pig;γ-IFN gene;PCR-SSCP;polymorphism
摘  要:
In order to study the γ-IFN gene exon 4 polymorphism in Hezuo pigs,we determined its allele number,nucleotide polymorphism sites,polymorphism information contents,the effective number of alleles and the heterozygosity.Variation of γ-IFN(interferon-gamma) gene in 138 Hezuo pigs was investigated by amplification of exon 4 PCR,followed by single-strand conformational polymorphism(SSCP) analysis,cloning,DNA sequencing and sequence data analysis.The result showed that five nucleotide polymorphisms found in exon 4,while,5 284 bp(A→G),5 341 bp(G→A) and 5 371 bp(A→G) were new nucleotide polymorphisms.In addition,four genotypes of AA,AB,AC and AD were detected,Allele A and genotype AA were predominant.Chi-square test indicated that the polymorphic locus in Hezuo pigs were at Hardy-Weinberg equilibrium(P>0.05).In the genetic polymorphism parameters of γ-IFN gene,the heterozygosity were 0.070 6,polymorphism information content were 0.069 7 and the effective number of alleles were 1.076 0,which represented the own unique conservativeness of γ-IFN gene in pigs.

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