Screening and identification of functional bacterial attachment genes in aerobic granular sludge  

作　　者：Kai Qiao Tingting Zhao LeiWang Wei Zhang WeiMeng Fan Liu Xu Gao Jianrong Zhu 

机构地区：[1]School of Environment,Beijing Normal University,Beijing 100875,China [2]State Key Laboratory of Water Simulation,Beijing 100875,China [3]R&D Centre of Aerobic Granule Technology,Beijing 100875,China

出　　处：《Journal of Environmental Sciences》2024年第7期205-214,共10页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51578069);Beijing Science and Technology Commission Project(No.Z171100000717012)。

摘　　要：The screening and identification of attachment genes is important to exploring the formation mechanism of biofilms at the gene level.It is helpful to the development of key culture technologies for aerobic granular sludge(AGS).In this study,genome-wide sequencing and gene editing were employed for the first time to investigate the effects and functions of attachment genes in AGS.With the help of whole-genome analysis,ten attachment genes were screened from thirteen genes,and the efficiency of gene screening was greatly improved.Then,two attachment genes were selected as examples to further confirm the gene functions by constructing gene-knockout recombinant mutants of Stenotrophomonas maltophilia;when the two attachment genes were knocked out,the attachment potential was reduced by 50.67%and 43.93%,respectively.The results provide a new theoretical principle and efficient method for the development of AGS from the perspective of attachment genes.

关 键 词：Attachment gene Genome-wide sequence Gene-knockout Attachment potential Aerobic granular sludge biofilm 

分 类 号：X703[环境科学与工程—环境工程]