PVP在桑叶总DNA提取中的应用
APPLICATION OF PVP IN TOTAL DNA EXTRACTION IN MULBERRY
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摘要: 采用CTAB(Cetyltrimethyle Ammonium Bromide,十六烷基三乙基溴化铵)缓冲液,附加1,PVP(Polvvinylpyrrolidone,聚乙烯吡咯烷酮),用平衡酚-氯仿-异戊醇-核糖棱酸酶法提取桑叶总DNA,经全自动分光光度计SmartSpecTM检测,结果表明用附加PVP的CTAB缓冲液提取的桑叶总DNA纯度高,A260/A280比值在1.80~1.90之间,多糖、蛋白质、RNA去除较彻底,能满足对总DNA质量要求较高的试验,如AFLP分析。
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关键词:
- PVP,桑总DNA,纯度
Abstract: CTAB ( cetyltrimethyl ammonium bromide) buffer supplemented with 1% PVP (polyvinylpyrrolidone) was used to extract total DNA of mulberry with the method ofphenol- chloroform- isopentanol- endoribonucleases. Assay of the extracted DNA with martSpecTM3000(America)indicated that tlhe purity of the extracted DNA with PVP in CTAB buffer was very high,the value of A260/A280 being 1.80~ 1.90.The polyhexose,protein and RNA were eliminated completely.the extracted DNA can be used for AFLP. -
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