中文关键词:生物膜胞外聚合物胞外DNA群体感应粘附 英文关键词:biofilmextracellular polymeric substanceextracellular DNAquorum sensingadhesion. 基金项目:国家自然科学基金计划项目(51478093); 吉林省科技发展计划项目(20170519013JH )

作者	单位	E-mail
孙明	东北电力大学	906701158@qq.com
张海丰	东北电力大学
张兰河	东北电力大学
李正	东北电力大学
鲁馨	东北电力大学

摘要点击次数:2430 全文下载次数:0 中文摘要: 生物膜是指细菌为适应外界环境的变化而形成的特殊微生物聚合体，生物膜法是水的生化处理技术的重要分支，在环境工程领域具有重要的位置。本文综述了胞外DNA (extracellular DNA, eDNA)在生物膜形成过程中的作用，首先介绍胞外聚合物(extracellular polymeric substance, EPS)分类以及eDNA在EPS中的分布情况；其次阐述群体感应(quorum sensing, QS)系统调节eDNA在细菌中的释放；为说明eDNA在生物膜形成过程中的机理，本文采用了XDLVO理论揭示eDNA调节细菌的粘附和聚集性能，并探讨了eDNA与蛋白质(proteins, PN)及多聚糖(polysaccharides, PS)的结合行为；最后，对该领域未来的研究方向进行了展望。 英文摘要: Biofilm is refers to the bacteria forming the special microbial aggregations in order to adapt to the change of external environment. The biofilm process is an important branch of water biochemical treatment technology, which is becoming more and more attentive in the field of environmental engineering. The article summarized studies on the role of extracellular DNA in the process of biofilm forming. Firstly, the classification of extracellular polymeric substance and eDNA distribution in EPS were described. Further, it illuminated that QS-mechanism mediated the release of eDNA in the bacterial cells. In order to provide more detailed information about the role of eDNA in the process of biofilm forming, the eDNA-mediated performance in the adhesion and aggregation of bacterial was revealed according to XDLVO theory. Moreover, the combinative behavior of eDNA with PN and PS were also discussed, respectively. Lastly, the future trends in the influence of eDNA on the process of biofilm forming in the coming years were addressed. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权转让声明书 -->