Bacterial succession in epiphytic biofilms and deciduous layer sediments during Hydrilla verticillata decay: A field investigation

作     者：Tingting Si Hezhou Chen Zheng Qiu Lisha Zhang Okugbe Ebiotubo Ohore Songhe Zhang Tingting Si;Hezhou Chen;Zheng Qiu;Lisha Zhang;Okugbe Ebiotubo Ohore;Songhe Zhang

作者机构：Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow LakesCollege 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2020年第32卷第7期

页      面：193-201页

核心收录：

学科分类：07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0815[工学-水利工程] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.E51879084 and E51579075) Major Science and Technology Program for Water Pollution Con-trol and Treatment of China(No.2018ZX07208-4) 

主　　题：Submersed macrophyte Decay Biofilm Bacterial community Co-occurrence network 

摘      要：Submersed macrophytes decay is an important natural process and has important role in mass and energy flow in aquatic ***,little is known about the dynamical changes in nutrients release and bacterial community during submersed macrophyte decay in natural *** this study,a field observation was conducted in a wetland dominated with Hydrilla verticillata for 36 *** of H2O2 and malondialdehyde(MDA)content and decrease of soluble proteins concentration were detected in leaves during *** ***,ammonium-N,soluble microbial products(SMP)and TOC concentration increased in overlying *** to bacterial 16 S r RNA Illumina sequencing analysis,the Shannon values were lower in epiphytic biofilms than deciduous layer *** relative abundances of Proteobacteria,Cyanobacteria and Actinobacteria were higher in epiphytic biofilms than in deciduous layer sediments(P0.6)were identified from 122 and 112 genera in epiphytic biofilms and deciduous layer sediments,*** to co-occurrence patterns,eight hubs were mainly from phyla Proteobacteria,Acidobacteria and Parcubacteria in epiphytic biofilms;while 37 hubs from the 14 phyla(Proteobacteria,Bacteroidetes,Acidobacteria,Chloroflexi,et al.)were detected in deciduous layer *** results indicate that bacterial community in deciduous layer sediments was more susceptible than in epiphytic biofilms during decay *** data highlight the role of microbial community in deciduous layer sediments on nutrients removal during *** decay and will provide useful information for wetland management.