当前位置: 首页 > 文章 > 4个绵羊品种褪黑激素受体1a基因第二外显子PCRR-FLP分析 华中农业大学学报 2003,22 (2) 105-109
Position: Home > Articles > PolymorphismAnalysis for Exon 2 of Melatonin Receptor 1a Gene in Four SheepBreeds by PCR-RFLP Journal of Huazhong Agricultural University 2003,22 (2) 105-109

4个绵羊品种褪黑激素受体1a基因第二外显子PCRR-FLP分析

作  者:
季从亮;储明星;陈国宏;周国利;朱颜
单  位:
中国农业科学院畜牧研究所;聊城大学生物系;扬州大学畜牧兽医学院
关键词:
绵羊;褪黑激素受体;基因;PCR-RFLP
摘  要:
采用 2种限制性内切核酸酶MnlⅠ和RsaⅠ ,对常年发情的小尾寒羊和湖羊以及季节性发情的多赛特羊和萨福克羊共 14 6只绵羊褪黑激素受体 1a(MTNR1A)基因外显子 2的 82 4bp扩增产物进行PCR RFLP分析。结果表明 :1)MTNR1A基因外显子 2的 6 0 5位碱基处表现出MnlⅠ酶切多态性。小尾寒羊、萨福克羊和湖羊只出现 2种基因型 :AB(30 3bp ,2 36bp/ 6 7bp)、BB(2 36bp/ 6 7bp ,2 36bp/ 6 7bp) ;多赛特羊出现 3种基因型 :AA(30 3bp ,30 3bp)、AB(30 3bp ,2 36bp/ 6 7bp)、BB(2 36bp/ 6 7bp ,2 36bp/ 6 7bp)。 2 )MTNR1A基因外显子 2的 6 0 4位碱基处表现出RsaⅠ酶切多态性。 4个绵羊品种都出现 3种基因型 :AA(2 90bp ,2 90bp)、AB(2 90bp ,2 6 7bp/ 2 3bp)、BB(2 6 7bp/ 2 3bp ,2 6 7bp/ 2 3bp)。 χ2 适合性检验结果表明 ,小尾寒羊和多赛特羊MTNR1A基因第二外显子在MnlⅠ酶切位点没有达到Hardy Weinberg平衡状态 (0 .0 1

0 .0 5 ) ;4个绵羊品种MT NR1A基因第二外显子在RsaⅠ酶切位点都已经达到Hardy Weinberg平衡状态 (P >0 .0 5 )。

译  名:
PolymorphismAnalysis for Exon 2 of Melatonin Receptor 1a Gene in Four SheepBreeds by PCR-RFLP
作  者:
Ji Congliang 1) Chu Mingxing 2) Chen Guohong 1) Zhou Guoli 3) Zhu Yan 3) ( 1) College of Animal Science and Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; 2) Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094, China; 3) Department of Biology, Liaocheng University, Liaocheng 252059, China)
关键词:
sheep, melatonin receptor, gene, PCR RFLP
摘  要:
The exon 2 of melatonin receptor 1a (MTNR1A) gene was amplified and a uniform fragment of 824 bp was obtained in 146 sheep including non seasonal estrous breeds (Small Tail Han sheep and Hu sheep) and seasonal estrous breeds (Dorset sheep and Suffolk sheep). The 824 bp PCR product was digested with restriction endonucleases Mnl Ⅰ and Rsa Ⅰ,and genetic polymorphism was detected by PCR RFLP. Polymorphic Mnl Ⅰ site was detected at base position 605 of the exon 2 of MTNR1A gene. There were two kinds of genotypes in Small Tail Han sheep, Suffolk sheep and Hu sheep, AB(303 bp,236 bp/67 bp)and BB(236 bp/67 bp, 236 bp/67 bp). Three kinds of genotypes were found in Dorset sheep, AA(303 bp,303 bp), AB(303 bp,236 bp/67 bp) and BB(236 bp/67 bp, 236 bp/ 67 bp). Polymorphic Rsa Ⅰ site was detected at base position 604 of the exon 2 of MTNR1A gene. Three kinds of genotypes were found in four sheep breeds, AA(290 bp,290 bp), AB(290 bp,267 bp/23 bp)and BB(267 bp/23 bp, 267 bp/23 bp).The results of χ 2 fitness test indicated that Mnl Ⅰ sites of the exon 2 of MTNR1A gene in Small Tail Han sheep and Dorset sheepwere not in Hardy Weinberg equilibrium(0.01< P <0.05), while Mnl Ⅰ sites of the exon 2 of MTNR1A gene in Suffolk sheep and Hu sheepwere in Hardy Weinberg equilibrium( P >0.05). Rsa Ⅰ sites of the exon 2 of MTNR1A gene in four sheep breedswere allin Hardy Weinberg equilibrium( P >0.05).

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