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大豆科学  2008 

改良Chelex-100法和CTAB法用于转基因抗草甘膦大豆检测效果的比较

DOI: 10.11861/j.issn.1000-9841.2008.05.0898, PP. 898-901

Keywords: Chelex-法,CTAB法,DNA,转基因检测

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Abstract:

以转基因抗草甘膦大豆为研究材料,分别采用改良Chelex-100法和常规CTAB法提取基因组DNA,以提取DNA的浓度和纯度,同时以PCR扩增大豆的内源基因(lectin)及外源特异性序列(CaMV35S,nos,Cp4-epsps)的效果对两种方法进行比较和评价。结果表明:虽然改良Chelex-100法DNA提取纯度不高,但是提取效率与常规CTAB法相当,而且改良Chelex-100法能够快速在1h之内从大豆中提取DNA,所提取的DNA可以直接用于PCR扩增反应,PCR扩增产物电泳条带清晰。因此,改良Chelex-100法可以替代CTAB法提取DNA用于转基因检测,该方法具有经济、简便、快速的特点。

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