【摘要】 宏基因组是特定环境全部生物遗传物质总和 ,决定生物群体生命现象。特定生物种基因组研究使人们的认识单元实现了从单一基因到基因集合的转变 ,宏基因组研究将使人们摆脱物种界限 ,揭示更高更复杂层次上的生命运动规律。在目前的基因结构功能认识和基因操作技术背景下 ,环境细菌宏基因组成为研究和开发的主要对象。环境细菌宏基因组细菌人工染色体文库筛选和基因系统学分析使研究者能更有效地开发细菌基因资源 ,更深入地洞察环境细菌多样性更多还原

【Abstract】 The collective genome of all living things in a habita t is defined as metagenome, which determines population characters. Genomics has shifted our study unit from single gene to gene assemblage Metagenomics will ce rtainly let us discover higher level and much more complex biological dogma. Due to limitations in our knowledge of gene structure and function and technique in gene manipulation, metagenomics is focused on the environmental bacteria at pre sent. Screening of bacterial artificial chromosome library of environmental bact eria and systematics of some common genes will offer us more effectiveness of ut ilizing bacterial gene resource and deeper understanding about bacterial diversi ty.更多还原