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Two electrophoreses in different pH buffers to purify forest soil DNA contaminated with humic substances

机译:在不同pH缓冲液中的两种电泳纯化被腐殖质污染的森林土壤DNA

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Direct extraction of DNA from soils is a useful way to gain genetic information on the soil source. However, DNA extraction from soils, especially forest soils, may be contaminated by humic substances due to their similar physical and chemical characteristics to soil. Even commercial soil DNA extraction kits fail to retrieve DNA from these soils. Using the potential changes of specific charge of DNA and humic substances in a pH solution, we performed two electrophoreses in different pH buffers to eliminate the interfering substances. The method produced high quality soil DNA, which is applicable for PCR amplification.
机译:从土壤中直接提取DNA是获得土壤来源遗传信息的有用方法。但是,由于土壤,特别是森林土壤中的DNA提取物与土壤具有相似的物理和化学特性,因此可能被腐殖质污染。即使是商业土壤DNA提取试剂盒也无法从这些土壤中提取DNA。利用pH溶液中DNA和腐殖质比电荷的潜在变化,我们在不同的pH缓冲液中进行了两种电泳,以消除干扰物质。该方法产生了高质量的土壤DNA,可用于PCR扩增。

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