基于宏基因组学的分子生态网络揭示活性污泥微生物相互作用  

Molecular ecological networks reveal microbial interactions in activated sludge based on metagenomics

作　　者：邹奎 张鹏 ZOU Kui;ZHANG Peng(College of Environment and Resources, Xiangtan University, Xiangtan 411105, China)

机构地区：[1]湘潭大学环境与资源学院,湖南湘潭411105

出　　处：《湘潭大学学报（自然科学版）》2021年第6期99-106,共8页Journal of Xiangtan University(Natural Science Edition)

基　　金：湖南省教育厅科学研究项目(20B58)。

摘　　要：基于宏基因组物种分类学注释结果,构建了不同形态下活性污泥微生物分子生态网络.结果表明附着生物膜和絮体污泥分子生态网络中模块化数值分别为0.826和0.828;平均聚类系数(avgCC)分别为0.754和0.733;平均路径长度(HD)分别为4.197和4.793;鲁棒性表现分别为0.274和0.297.基于此,该研究得出结论:絮体污泥群落相较附着生物膜群落有更为强烈的相互作用,而附着生物膜相较絮体污泥则有着更为丰富的参与硝化过程的物种(Nitrospira)以及更为“健壮”的生态网络.Based on the annotation results of metagenomic species taxonomy,this study constructed a molecular ecological network of activated sludge microorganisms in different forms.The results showed that the number of modularization values in the molecular ecological network of attached biofilm and floc sludge were 0.826 and 0.828,respectively;the average clustering coefficient(avgCC)was 0.754 and 0.733,respectively;the average path length(HD)was 4.197 and 4.793 respectively;the rod performance is 0.274 and 0.297,respectively.In this study,the floc sludge community has a stronger interaction than the attached biofilm community,and the attached biofilm has a richer species(Nitrospira)involved in nitrifying process and a more“Robust”network than the floc sludge.

关 键 词：活性污泥 生物膜 宏基因组 分子生态网络 

分 类 号：X323[环境科学与工程—环境工程]