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基于毛细管电泳技术的牡丹SRAP-PCR反应体系优化及引物筛选     被引量:1

Optimization of SRAP-PCR System and Selection of Primers for Paeonia suffruticosa Andr. Based on Capillary Electrophoresis

文献类型:期刊文献

中文题名:基于毛细管电泳技术的牡丹SRAP-PCR反应体系优化及引物筛选

英文题名:Optimization of SRAP-PCR System and Selection of Primers for Paeonia suffruticosa Andr. Based on Capillary Electrophoresis

作者:史倩倩[1] 王雁[1] 周琳[1] 黄国伟[1]

第一作者:史倩倩

机构:[1]中国林科院林业研究所,林木遗传育种国家重点实验室,北京100091

年份:2012

卷号:34

期号:1

起止页码:158-164

中文期刊名:江西农业大学学报

外文期刊名:Acta Agriculturae Universitatis Jiangxiensis

收录:CSTPCD;;北大核心:【北大核心2011】;CSCD:【CSCD_E2011_2012】;

基金:国家林业局林业公益性行业科研专项(200904050)

语种:中文

中文关键词:牡丹;SRAP;毛细管电泳;体系优化;引物筛选

外文关键词:Paeonia suffruticosa Andr. ; SRAP marker; capillary electrophoresis ; optimization ; selection of primers

分类号:S685.11

摘要:以牡丹叶片DNA为模板,对SRAP-PCR反应程序进行研究,确定适合的反应程序,即94℃预变性5 min;94℃变性1 min,33℃退火1 min,72℃延伸1 min,共5个循环;随后94℃变性1 min,52℃退火1 min,72℃延伸1 min,共35个循环;最后72℃延伸10 min。基于毛细管电泳技术,采用正交设计L18(37)对牡丹SRAP-PCR反应体系的5因素(Taq酶,Mg2+,模板DNA,dNTP,引物)3个水平进行了优化,构建了牡丹SRAP最佳反应体系:模板DNA 50 ng,dNTP 0.25 mmol/L,Mg2+浓度2.5 mmol/L,引物浓度0.4μmol/L,TaqDNA聚合酶0.5 U,总体积为25μL。各因素对扩增结果影响程度均不同:dNTPs>引物>DNA模板>Mg2+>Taq酶。运用该体系从756个SRAP引物组合中筛选出多态性好、条带清晰的26个引物组合,并证明了该体系稳定可靠。该体系的建立以及引物组合的确定为今后利用SRAP分子技术进行牡丹的相关研究奠定了科学基础。
In this study, the procedure of SRAP - PCR was determined : an initial denaturing step was performed at 94 ℃for 5 min ; followed by 5 cycles at 94℃ for 1 min, 33℃ for 1 min and 72℃ for 1 min ; followed by 35 cycles at 94℃ for 1 min, 50℃ for 1 min, 72 ℃ for 1 rain, and a final extension at 72℃ for 10 rain. The orthogonal design was used to optimize SRAP-PCR system with five factors at three levels respec- tively based on capillary electrophoresis. The results showed that the optimized SRAP reaction mixtures for Paeonia suffruticosa Andr. : ( total volume 25 μL) 50 ng DNA template, 0.25 mmolL dNTP, 2.5 mmol/L Mg2+, 0.4 p, mol/Lprimer, 0.5 U Taq DNA polymerase. The concentration of dNTP had the greatest effect and DNA template had the least effect on the result. And twenty-six pairs of primers were selected with abun- dant polymorphism above 70% from 756 pairs of primers. The optimized SRAP-PCR system and pairs of prim- ers could be applied to related research of Paeonia suffruticosa Andr.

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