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高质量丝栗栲基因组DNA的提取方法 总被引:1,自引:0,他引:1
为了促进丝栗栲分子生物学的研究,采用尿素法、柠檬酸钠法、改良CTAB法和SDS法4种方法提取丝栗栲叶片基因组DNA,并对提取效果进行了比较和分析。结果表明,改良CTAB法较适合丝栗栲基因组DNA提取,其提取的DNA产率高,凝胶检测条带整齐清晰,杂质少、无明显降解,OD260/OD280比值在1.8左右;而尿素法难以提取基因组DNA,SDS法提取的DNA得率较低,柠檬酸钠法有蛋白质、多糖等杂质污染均不太适用丝栗栲基因组DNA提取。采用改良CTAB法提取得到丝栗栲幼叶、老叶、嫩芽和幼茎基因组DNA,产率分别为177.3、167.1、242.0和156.7μg/g。酶切分析也证明,改良CTAB法提取的不同组织DNA适用于进行后续分子生物学研究。 相似文献
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采用3种DNA提取方法对8种槭属树种基因组DNA进行质量、浓度和纯度对比研究,结果表明,3种方法提取的基因组DNA差异较大,浓度由高到低依次为改良CTAB法TIANGEN试剂盒法改良SDS法;提取的基因组DNA纯度为TIANGEN试剂盒法CTAB法SDS法。3种方法中TIANGEN试剂盒法提取的槭属树种基因组DNA含有的杂质最少,但成本较高;改良CTAB法提取的基因组DNA质量、浓度和纯度均优于改良SDS方法,适用于槭属树种的后续研究。 相似文献
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无患子总DNA提取方法研究 总被引:1,自引:2,他引:1
针对无患子富含多酚、多糖、蛋白质及其他次生代谢物质的特点,以无患子叶片为材料,分别采用改良的CTAB法和CTAB与SDS相结合法提取不同种源无患子的总DNA。结果显示,改良的CTAB法提取的总DNA,得率较高,纯度好,可用于酶切、PCR扩增等后续试验,并能获得清晰、稳定的扩增产物。而采用CTAB与SDS相结合的方法得到的基因组DNA效果不稳定,无法检测出DNA。改良的CTAB法具有简单、经济的特点,可用于无患子总DNA的提取,成功地进行SRAP分子标记分析,为研究无患子遗传资源多样性奠定基础。 相似文献
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4种不同广玉兰基因组DNA提取方法的比较 总被引:3,自引:1,他引:2
采用常规CTAB法、常规SDS法、改良CTAB法、改良SDS法4种方法对广玉兰(Magnolia grandiflora)叶片基因组DNA的提取进行比较,并进行ISSR—PCR检测,结果表明:改良的CTAB法提取的基因组DNA效果比常规CTAB法、常规和改良SDS法都好,提取DNA的浓度和纯度高,无蛋白质和RNA等杂质影响,并且可以很好的应用于ISSR分子标记分析,ISSR—PCR反应体系中模板DNA的最佳浓度是30ng/20μl. 相似文献
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Amplified fragment length polymorphism (AFLP) is a powerful DNA fingerprinting technique for studying genetic rela-tionships and genetic diversity in insects. However, the crucial prerequisite for AFLP analysis is to extract DNA of high quality. In this study, we evaluate four different protocols (SDS method, improved SDS method, CTAB method and a complex method with SDS and CTAB) for isolating DNA from the seabuckthorn carpenter moth (Holcocerrus hippophaecolus (Lepidoptera: Cossidae)). The results indicate that the CTAB method does not produce DNA suitable for AFLP analysis. The SDS method and the complex method with SDS and CTAB are comparatively time-consuming and resulted in low yields of DNA and were therefore not used for AFLP assay. The improved SDS method is recommended for preparing DNA templates from H. hippophaecolus for AFLP analysis. 相似文献
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Methodological comparison of DNA extraction from Holcocerrus hippophaecolus (Lepidoptera: Cossidae) for AFLP analysis 总被引:1,自引:1,他引:0
CHEN Min ZHU Yang-yu TAO Jing Luo You-qing 《中国林学(英文版)》2008,10(3):189-192
Amplified fragment length polymorphism (AFLP) is a powerful DNA fingerprinting technique for studying genetic relationships and genetic diversity in insects. However, the crucial prerequisite for AFLP analysis is to extract DNA of high quality. In this study, we evaluate four different protocols (SDS method, improved SDS method, CTAB method and a complex method with SDS and CTAB) for isolating DNA from the seabuckthorn carpenter moth (Holcocerrus hippophaecolus (Lepidoptera: Cossidae)). The results indicate that the CTAB method does not produce DNA suitable for AFLP analysis. The SDS method and the complex method with SDS and CTAB are comparatively time-consuming and resulted in low yields of DNA and were therefore not used for AFLP assay. The improved SDS method is recommended for preparing DNA templates from H. hippophaecolus for AFLP analysis. 相似文献
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五唇兰组织内含有大量的酚类、多糖以及此生代谢产物,DNA提取较为困难。为获得高质量的五唇兰基因组DNA,文中采用传统十六烷基三甲基溴化铵(CTAB)法、常规十二烷基硫酸钠(SDS)法和改进的CTAB法对五唇兰基因组DNA的提取进行比较。结果表明:改进的CTAB法比传统CTAB法和常规SDS法都好,可以得到质量较好的DNA,电泳条带清晰,通过紫外分光光度计检测,A260/A280为2.0以上。 相似文献