An improved method to extract DNA from mango Mangifera indica

文献类型： 外文期刊

第一作者： Uddin, Mohammad S.

作者： Uddin, Mohammad S.;Sun, Wenli;Cheng, Qi;Uddin, Mohammad S.;He, Xinhua

作者机构：

关键词： genomic DNA extraction;Mangifera indica;polyphenols;inter simple sequence repeat;18S rRNA

期刊名称：BIOLOGIA （ 影响因子：1.35； 五年影响因子：1.139 ）

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收录情况： SCI

摘要： High quality genomic DNA is the first step in the development of DNA-based markers for fingerprinting and genetic diversity of crops, including mango (Mangifera indica L.), a woody perennial. Poor quality genomic DNA hinders the successful application of analytical DNA-based tools. Standard protocols for DNA extraction are not suitable for mango since the extracted genomic DNA often contains secondary metabolites that interfere with analytical applications. In this study, we employed an additional step to remove polysaccharides, polyphenols and secondary metabolites from genomic DNA extracted from young or mature leaf tissue; then a modified traditional cetyl trimethyl ammonium bromide (CTAB) method was applied. The use of 0.4 M glucose improved DNA quality and avoided contamination and browning by polyphenolics, relative to the traditional CTAB method. This is an easy and efficient method for genomic DNA extraction from both young and mature leaves of mango. The isolated DNA was free of polysaccharides, polyphenols, RNA and other major contaminants, as judged by its clear colour, its viscosity, A260/A280 ratio and suitability for PCR-based reactions. This modified protocol was also used to extract high quality genomic DNA from other woody perennials, including walnut, guava, lychee, pear, grape and sugarcane.

分类号： Q

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