Three breeds of sows were observed to investigate the relationship between Single Nucleotide Polymorphisms（SNPs） in Mu Opioid Receptor（MOR）and stereotypic behaviour,such as,sham-chewing,bar biting and standing sti...Three breeds of sows were observed to investigate the relationship between Single Nucleotide Polymorphisms（SNPs） in Mu Opioid Receptor（MOR）and stereotypic behaviour,such as,sham-chewing,bar biting and standing still in order to better understand the mechanism of stereotypic development of the animals in restrained conditions.MOR exon 2 partial sequences were amplified to analyze single nucleotide polymorphisms by PCR-SSCP.One SNP,a silence mutant was found.A significant difference （P〈0.01）was found in the frequency of genotypes in these 3 breeds where only the BB genotype,which was identical to that published in GenBank,was found in the Duroc breed,while no AA genotype was found in Landrace,3 genotypes AA,BB and AB were found in Yorkshire.The result also indicated that the individuals with AA and AB genotypes tended to be more active in sham-chewing than those with the BB genotype（P〈0.05）.The overall results of this study suggested that sham-chewing of sows may be subjected to both genetic control and environmental conditions,but activity level was more likely to be affected by their environment.We can putatively draw the conclusion that MOR gene has effect on the sham-chewing behavioral traits of sow.展开更多
【目的】探究酪氨酸酶相关蛋白1b(tyrosinase-related protein 1b,TYRP1b)基因变异与斑马鱼体色性状的相关性。【方法】以体色表型存在显著差异的红色、黄色和蓝色斑马鱼共计219个样本的肌肉组织DNA为模板,设计3对引物,采用PCR扩增、San...【目的】探究酪氨酸酶相关蛋白1b(tyrosinase-related protein 1b,TYRP1b)基因变异与斑马鱼体色性状的相关性。【方法】以体色表型存在显著差异的红色、黄色和蓝色斑马鱼共计219个样本的肌肉组织DNA为模板,设计3对引物,采用PCR扩增、Sanger测序技术筛查TYRP1b基因单核苷酸多态性(single nucleotide polymorphisms,SNPs),并将SNPs与斑马鱼体色性状进行关联分析。【结果】获得的斑马鱼TYRP1b基因外显子2、部分内含子3、外显子4、内含子4、外显子5、内含子5、外显子6和外显子7长度分别为134、212、168、135、180、113、150、171 bp。SNPs筛查显示,3种体色斑马鱼群体共筛查到18个SNPs,部分内含子3存在11个SNPs位点:g.2125G>A、g.2150G>A、g.2152G>T、g.2161C>A、g.2175A>T、g.2180G>T、g.2185A>T、g.2192A>C、g.2200A>T、g.2201A>C和g.2213T>C;内含子4检测到4个SNPs位点:g.7C>A、g.65A>G、g.84T>A和g.103C>T;内含子5存在1个SNPs位点:g.61G>T;外显子4、6分别存在1个SNPs位点:g.125G>T和g.80T>A,且均为同义突变;外显子2、5和7均未检测到SNPs。关联分析表明,TYRP1b基因内含子3中g.2152G>T、g.2175A>T、g.2180T>G、g.2192A>C、g.2200A>T、g.2201A>C位点、内含子4中g.65A>G位点及外显子6中g.80T>A位点的基因型均与斑马鱼体色性状极显著相关(P<0.01)。【结论】斑马鱼TYRP1b基因内含子3、4及外显子6存在8个与体色表型存在关联的SNPs,可能影响斑马鱼体色性状或与之紧密连锁。展开更多
基金Supported by National Natural Sciences Foundation of China(39970533)
文摘Three breeds of sows were observed to investigate the relationship between Single Nucleotide Polymorphisms（SNPs） in Mu Opioid Receptor（MOR）and stereotypic behaviour,such as,sham-chewing,bar biting and standing still in order to better understand the mechanism of stereotypic development of the animals in restrained conditions.MOR exon 2 partial sequences were amplified to analyze single nucleotide polymorphisms by PCR-SSCP.One SNP,a silence mutant was found.A significant difference （P〈0.01）was found in the frequency of genotypes in these 3 breeds where only the BB genotype,which was identical to that published in GenBank,was found in the Duroc breed,while no AA genotype was found in Landrace,3 genotypes AA,BB and AB were found in Yorkshire.The result also indicated that the individuals with AA and AB genotypes tended to be more active in sham-chewing than those with the BB genotype（P〈0.05）.The overall results of this study suggested that sham-chewing of sows may be subjected to both genetic control and environmental conditions,but activity level was more likely to be affected by their environment.We can putatively draw the conclusion that MOR gene has effect on the sham-chewing behavioral traits of sow.
