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Position: Home > Articles > Establishment and optimization of SCoT-PCR system in Fragaria Journal of Fruit Science 2012,29 (3) 393-397

草莓属植物SCoT分析体系的建立及优化

作  者:
秦国新;何桥;梁国鲁;雷家军;郭启高
单  位:
沈阳农业大学园艺学院;山西农业大学园艺学院;西南大学园艺园林学院
关键词:
草莓属;SCoT;体系优化
摘  要:
为利用SCoT技术开展草莓属(Fragaria)植物种质资源遗传多样性及分子系统学研究,以草莓属植物11个野生种和1个栽培品种为试材,采用L25(56)正交试验设计,建立了草莓属植物的最优SCoT-PCR反应体系,即20μL反应体系中,含Mg2+2.0 mmol·L-1、dNTPs 0.3 mmol·L-1、Taq酶0.75 U、引物0.75μmol·L-1、模板DNA 40 ng,并对退火温度进行了优化,对电泳检测方法及草莓属植物DNA提取方法进行了改进。共筛选出22个适于进行草莓属植物SCoT分析的引物。经验证,该反应体系稳定性好、可重复性强、多态性高、扩增效果好,适于草莓属植物的SCoT分析。
译  名:
Establishment and optimization of SCoT-PCR system in Fragaria
作  者:
QIN Guo-xin1,2,HE Qiao1,LIANG Guo-lu1*,LEI Jia-jun3*,GUO Qi-gao1(1College of Horticulture and Landscape Architecture,Southwest University,Bebei,Chongqing 400716 China;2College of Horticulture,Shanxi Agricultural University,Taigu,Shanxi 030801 China;3College of Horticulture,Shenyang Agricultural University,Shenyang,Liaoning 110161 China)
关键词:
Fragaria;SCoT;System optimization
摘  要:
Start Codon Targeted Polymorphism(SCoT) is a novel gene-targeted molecular marker technique.In this experiment,a L25(56) or thogonal design was used for the optimal SCoT-PCR reaction system of strawberry with 11 Fragaria species and a cultivar as materials.The optimal PCR reaction mixture of SCoT-PCR system for strawberry was 2.0 mmol·L-1 Mg2+,0.3 mmol·L-1 dNTPs,0.75 U Taq polymerase,0.75 μmol·L-1 primer and 40 ng template DNA in 20 μL mixtures.Furthermore,the annealing temperature of each primer was optimized;the methods of electrophoresis and strawberry DNA extracting were improved.22 primers were selected which were suitable to the SCoT-PCR reactions.The optimal reaction system with high polymorphism,stability and repeatability was obtained.

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