Objective:To explore a method to solve the issue of interference in fluorescence quantitative PCR non-specific amplification for gene detection.Method:A three-step method was used for amplification,and the quantitativ...Objective:To explore a method to solve the issue of interference in fluorescence quantitative PCR non-specific amplification for gene detection.Method:A three-step method was used for amplification,and the quantitative fluorescence signal collection process was set in the extension stage.Results:Three-step amplification has the advantages of wide application range;improved accuracy;and reduced primer design requirements.Conclusion:The interference of non-specific amplification signals was effectively avoided,the melting curve plotting process was omitted,the reaction time was shortened,and the detection accuracy was improved.展开更多
【目的】建立一种基于单碱基突变的双向等位基因特异PCR(bi-directional PCR amplification of specific alleles,Bi-PASA)技术,并将其应用于杏单核苷酸多态性分型研究。【方法】利用直接测序的方法在2份不同果肉质地杏EXP基因的DNA序...【目的】建立一种基于单碱基突变的双向等位基因特异PCR(bi-directional PCR amplification of specific alleles,Bi-PASA)技术,并将其应用于杏单核苷酸多态性分型研究。【方法】利用直接测序的方法在2份不同果肉质地杏EXP基因的DNA序列上发现1个单碱基变异。在其上、下游两端设计双向等位基因特异性引物及其外侧互补引物,对120份杏材料的SNP进行分型。同时,对部分材料的基因型进行测序验证。【结果】利用双向等位基因特异PCR对杏EXP基因315 bp处SNP分型结果与直接测序完全一致。【结论】双向等位基因特异PCR技术是一种简单、经济、快速而可靠的SNP分型方法,可有效地应用于杏基因组上已知SNP突变的分型研究。展开更多
为提高抗PVY烟草品种的分子育种效率,本研究针对抗病种质资源半坤村晒烟中隐性抗病基因eIF4E1的SNP位点G149C建立一种简单快速的双向等位基因特异性PCR(Bi-directional PCR amplification of specific alleles,Bi-PASA)检测方法,并对该...为提高抗PVY烟草品种的分子育种效率,本研究针对抗病种质资源半坤村晒烟中隐性抗病基因eIF4E1的SNP位点G149C建立一种简单快速的双向等位基因特异性PCR(Bi-directional PCR amplification of specific alleles,Bi-PASA)检测方法,并对该检测方法的特异性、准确度及实际应用效果进行验证。结果表明,建立的Bi-PASA检测方法能够在一个PCR反应中有效区分eIF4E1基因G149C位点3种基因型:野生型GG、杂合突变型GC、纯合突变型CC。利用Bi-PASA检测方法可以对K326×半坤村晒烟F2分离群体的基因型进行有效鉴别,且鉴定结果与普通的等位基因特异性PCR(allele-specific PCR,AS-PCR)以及直接测序法的鉴定结果一致。综上所述,本研究建立的Bi-PASA检测方法特异性强、准确度高、操作简便,可更好地应用于eIF4E1基因的分子标记辅助育种。展开更多
文摘Objective:To explore a method to solve the issue of interference in fluorescence quantitative PCR non-specific amplification for gene detection.Method:A three-step method was used for amplification,and the quantitative fluorescence signal collection process was set in the extension stage.Results:Three-step amplification has the advantages of wide application range;improved accuracy;and reduced primer design requirements.Conclusion:The interference of non-specific amplification signals was effectively avoided,the melting curve plotting process was omitted,the reaction time was shortened,and the detection accuracy was improved.
文摘【目的】建立一种基于单碱基突变的双向等位基因特异PCR(bi-directional PCR amplification of specific alleles,Bi-PASA)技术,并将其应用于杏单核苷酸多态性分型研究。【方法】利用直接测序的方法在2份不同果肉质地杏EXP基因的DNA序列上发现1个单碱基变异。在其上、下游两端设计双向等位基因特异性引物及其外侧互补引物,对120份杏材料的SNP进行分型。同时,对部分材料的基因型进行测序验证。【结果】利用双向等位基因特异PCR对杏EXP基因315 bp处SNP分型结果与直接测序完全一致。【结论】双向等位基因特异PCR技术是一种简单、经济、快速而可靠的SNP分型方法,可有效地应用于杏基因组上已知SNP突变的分型研究。
文摘为提高抗PVY烟草品种的分子育种效率,本研究针对抗病种质资源半坤村晒烟中隐性抗病基因eIF4E1的SNP位点G149C建立一种简单快速的双向等位基因特异性PCR(Bi-directional PCR amplification of specific alleles,Bi-PASA)检测方法,并对该检测方法的特异性、准确度及实际应用效果进行验证。结果表明,建立的Bi-PASA检测方法能够在一个PCR反应中有效区分eIF4E1基因G149C位点3种基因型:野生型GG、杂合突变型GC、纯合突变型CC。利用Bi-PASA检测方法可以对K326×半坤村晒烟F2分离群体的基因型进行有效鉴别,且鉴定结果与普通的等位基因特异性PCR(allele-specific PCR,AS-PCR)以及直接测序法的鉴定结果一致。综上所述,本研究建立的Bi-PASA检测方法特异性强、准确度高、操作简便,可更好地应用于eIF4E1基因的分子标记辅助育种。