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Development of method for preparing high molecular weight DNA from chrysanthemum

文献类型: 外文期刊

作者: Guo, Xinwei 1 ; Zhang, Xiuhai 1 ; Wu, Zhongyi 1 ; Luo, Chang 1 ; Cheng, Xi 1 ; Huang, Conglin 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing 100097, Peoples R China

关键词: Chrysanthemum lavandulifolium;High molecular weight DNA;Phenolic compound

期刊名称:SCIENTIA HORTICULTURAE ( 影响因子:3.463; 五年影响因子:3.672 )

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收录情况: SCI

摘要: We developed an improved method for preparing high molecular weight DNA (HMW-DNA) from leaves of Chrysanthemum lavandulifolium that has high content of phenolic compounds. Compared with three previous methods for preparing HMW-DNA, only with the improved method a considerable yield of HMW-DNA more than 2 Mb was achieved. The improved method utilizes a modified buffer system including 1% (v/v) beta-mercaptoethanol, 4 mM spermidine and 6% (w/v) polyvinylpyrrolidone (PVP)-40 and a centrifugal speed of 1600 x g to extract and suspend HMW-DNA. With the improved method, phenolic compounds were successfully removed and antioxidants protected HMW-DNA from oxidation and degradation. No difference on the yield of DNA was observed with different lysis times. The HMW-DNA can be partially digested to 23-80 kb in size, and is suitable for artificial chromosome library construction

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