节点文献
萝卜基因组DNA的RAMP-PCR体系优化
Optimization of RAMP-PCR reaction system in genomic DNA of radish(Raphanus sativus)
【摘要】 以萝卜为材料,对基因组DNA的RAMP分析体系中的Mg2+、dNTPs和引物浓度进行优化。分别设计3个浓度梯度:Mg2+为0.75、1.5、3.0 mmol.L-1;dNTPs为0.05、0.15、0.3mmol.L-1;引物为0.065、0.2、0.4μmol.L-1,并对合适退火温度进行研究。筛选出的RAMP优化体系为(20μL):dNTPs 0.15 mmol.L-1,Mg2+1.5 mmol.L-1,引物0.2~0.4μmol.L-1,DNA10 ng,Taq E 0.8U;PCR扩增程序为94℃3 m in,94℃1 m in,45℃1 m in,72℃1.5 m in,42个循环,72℃8 m in。运用此体系,进行引物组合筛选,并对7个萝卜品种的遗传多样性与品种鉴定进行RAMP标记分析。
【Abstract】 Genomic DNA of Radish was analyzed by optimizing the concentration of Mg2+,dNTPs and primer in Random Amplified Microsatellite Polymorphism(RAMP) system.Three different concentration gradients were set respectively,Mg2+(0.75),(1.5),(3.0) mmol·L-1;dNTPs(0.05),(0.15),(0.3)(mmol·L-1);primer(0.065),(0.2),(0.4) μmol·L-1,and the suitable annealing temperature was also screened.An optimization of RAMP reaction system for radish genomic DNA is(20 μL): dNTPs (0.15) mmol·L-1,Mg2+(1.5) mmol·L-1,primer(0.2)~(0.4) μmol·L-1,DNA(10 ng),Taq E(0.8U).The amplification protocol was: 94℃(3 min),42 cycles for(1 min) at 94℃,(1 min) at 45℃,(1.5 min) at 72℃,followed by a final extension of(8 min) at 72℃.The suitable system was applied in screening the primer combinations,and the genetic diversity of seven radish varieties was analyzed in RAMP marker system.
【Key words】 radish; RAMP marker; system optimization; genetic diversity;
- 【文献出处】 植物研究 ,Bulletin of Botanical Research , 编辑部邮箱 ,2006年01期
- 【分类号】S631.1
- 【被引频次】13
- 【下载频次】254