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海水养殖沉积环境微生物总DNA的提取方法研究
Authors
傅莲英
席峰
+4 more
王桂忠
田蕴
袁建军
郑天凌
Publication date
30 November 2006
Publisher
Abstract
传统的微生物分离与培养技术无法揭示微生物群落的动态变化.为了阐释虾池沉积环境微生态格局的原始组成情况,本研究先以TENP缓冲液去除沉积物中的腐殖酸,继之以溶菌酶-SDS温和裂解,其总DNA的提取效率达90%以上,所获DNA产量达2~20μg/g沉积物(湿),片段大小均在23 kb左右,不经纯化即可直接进行PCR扩增和限制性酶切.以该DNA为模板进行PCR-DGGE分析,揭示了虾池沉积物丰富的微生物多样性.该方法是一种适用于虾池沉积物总DNA提取的简便、可靠方法
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Last time updated on 16/06/2016