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白令海北部表层沉积物中细菌多样性的研究
Authors
曾胤新
田蕴
邹扬
郑天凌
Publication date
15 March 2009
Publisher
Abstract
提取白令海表层沉积物样品总DNA,构建沉积物中的细菌16SrDNA文库,通过RFLP酶切分型与序列测定,进行沉积物中的细菌多样性及系统发育分析。结果表明,该沉积物中细菌多样性丰富,获得的125条序列归属于10个细菌类群,包括占据优势地位的变形细菌(Pro-teobacteria,49.6%)、酸杆菌门(Acidobacteria,20.8%),以及拟杆菌门(Bacteroidetes,6.4%)、放线菌门(Actinobacteria,5.6%)、浮霉菌门(Planctomycetes,5.6%)、硝化螺旋菌门(Nitrospirae,4%)、疣微菌门(Verrucomicrobia,2.4%)、绿弯菌门(Chloroflexi,1.6%)、纤维杆菌门(Fibrobacteres,0.8%)、螺旋体(Spirochaetes,0.8%)。此外,还有一部分分类地位尚不明确的细菌(2.4%)。而在变形细菌中,δ、γ亚群为其中的优势类群
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Last time updated on 16/06/2016