魔芋DNA快速提取新方法及ISSR-PCR扩增

Rapid DNA Extraction Method from Amorphophallas. konjac and ISSR-PCR Amplification

[目的]研究魔芋DNA的提取方法。[方法]采用CTAB、SDS及新改良的方法提取魔芋总DNA,通过分光光度计检测、电泳检测及ISSR-PCR检测方法进行比较分析。[结果]采用新改良的方法得到的DNA纯度及产量均较高,适于魔芋DNA的快速提取;以其为模板进行ISSR-PCR扩增,条带清晰,可获得较好的结果。[结论]为大规模提取高质量的魔芋DNA奠定基础,也为进一步研究魔芋的遗传多样性提供了分子依据。

[Objective] The research aimed to study the total DNA extraction methods of Amorphophallas.konjac.[Method] To investigate the optimum DNA extraction method,CTAB,SDS and new modified methods for isolating genomic DNA from Amorphophallas.konjac leaf were studied and the isolated DNAs were examined by ultraviolet absorption test,agarose gelelectrophoresis and ISSR-PCR test for comparative analysis.[Result] The results showed that the new modified method was suitable for DNA isolation from Amorphophallas.konjac plants with high purity and yield;quality of DNA could meet ISSR-PCR requirement even extracted once by the new modified method.[Conclusion] The study provided basis for extracting high quality DNA sample,and offered the molecular genetics reference for exploring the genetic diversity of Amorphophallas.konjac.