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Metagenomic technology platform and it’s application for the research and exploitation of microbial resources in mangrove soil

Abstract

红树林土壤处于“海洋-陆地”界面潮间带环境,其生境的独特性决定了其中微生物的多样性及其基因资源的珍稀性,深入开展红树林土壤微生物的研究将加快新型功能基因、新颖天然产物的发现进程。完全不依赖于平板分离的现代宏基因组学技术为充分探索不同自然生境中的微生物资源提供了有力手段。然而,将该技术实施于红树林土壤微生物的研究时,尚存在若干困难:①红树林土壤为高粘质、高有机质含量类型土壤,提取DNA时存在大量腐殖酸及腐殖酸类等高分子量抑制性物质的共提取等问题,造成所得DNA品质低下,难于进行微生物多样性分析。②DNA提取过程中,红树林土壤中高含量的粘质极易吸附刚从微生物细胞裂解释放的大片段DNA,造成所得DN...Microbes inhabiting in special intertidal mangrove soil niches possess the enormous genetic diversity and immense potential to produce new secondary metabolites. Paying attention to the research mangrove soil microbes would accelerate the rate of discovering novel bioactive molecules. Culture-independent metagenomic technology provides a powerful tool to explore microbial resources with high throu...学位:理学博士院系专业:生命科学学院生物学系_微生物学学号:B20032601

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