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宁强矮马生长激素基因(GH)的遗传变异分析
引用本文:张涛,路宏朝,陈锐,周建军.宁强矮马生长激素基因(GH)的遗传变异分析[J].中国农业科学,2009,42(12):4435-4440.
作者姓名:张涛  路宏朝  陈锐  周建军
作者单位:陕西理工学院生物科学与工程学院,陕西,汉中,723001
基金项目:陕西省教育厅科研项目,陕西理工学院科研项目 
摘    要: 【目的】通过分析不同动物和中国几个地方马种生长激素基因序列,为宁强矮马起源和矮化形成机制的研究提供分子水平的试验依据。【方法】通过PCR扩增宁强矮马生长激素基因并进行测序,用DNAMAN软件对不同动物的生长激素基因序列进行比对分析。【结果】马品种间29个位点发生遗传变异,编码区11个位点发现遗传多态现象。以蒙古马生长激素氨基酸序列为标准,宁强矮马仅在1 765位点的变异导致氨基酸发生改变。以生长激素的mRNA序列为基本数据进行聚类分析,宁强矮马和德保马67的同源性为100%,与百色马的同源性为99.8%,与蒙古马的同源性为99.7%。【结论】马属动物生长基因序列与猪和狗的同源性较高,宁强矮马1 765位的G→A可能影响到宁强矮马的生长发育。

关 键 词:宁强矮马  生长激素基因  序列分析  遗传变异
收稿时间:2009-04-17;

Genetic Variation of Growth Hormone Gene on Ningqiang Pony
ZHANG Tao,LU Hong-zhao,CHEN Rui,ZHOU Jian-jun.Genetic Variation of Growth Hormone Gene on Ningqiang Pony[J].Scientia Agricultura Sinica,2009,42(12):4435-4440.
Authors:ZHANG Tao  LU Hong-zhao  CHEN Rui  ZHOU Jian-jun
Affiliation:(School of Biological Science and Engineering, Shaanxi University of Technology)
Abstract:Objective] In order to provide a scientific basis for the origin and dwarfish mechanism of Ningqiang pony,the sequence of GH of different animals and some China horse breeds were studied,Method] The PCR amplification,sequencing and DNAMAN software were used.Result]Them were 29 genetic variation,11 loci were found in the coding region.Taking the AA sequence of GH of Mongolia horse as standard,there was 1 amino acid variation in Ningqiang pony.Through clustering analysis based on the sequence of mRNA of GH,the homology was 100%,99.8%,99.7%,between Ningqiang and Debao 67,Baise and Mongolia.Conclusion]The homology level of GH was higher among Equus caballus,Sus scrofa and dog in present study,and the mutation of G→A affects the growth of Ningqiang pony.
Keywords:Ningqiang pony  growth hormone gene  sequence analysis  genetic variation
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