Seasonal variations of soil bacterial communities in Suaeda wetland of Shuangtaizi River estuary, Northeast China  

作　　者：Xuwang Zhang Zhe Ji Yating Shao Chaochen Guo Hao Zhou Lifen Liu Yuanyuan Qu 

机构地区：[1]Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education),School of Ocean Science and Technology,Dalian University of Technology,Panjin 124221,China [2]Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education),School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China

出　　处：《Journal of Environmental Sciences》2020年第11期45-53,共9页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.31970107,51508068);the Fundamental Research Funds for the Central Universities(No.DUT19JC17);support from the Undergraduate Innovation and En-trepreneurship Training Program in Dalian University of Technology。

摘　　要：Estuarine wetland is the transitional interface linking terrestrial with marine ecosystems,and wetland microbes are crucial to the biogeochemical cycles of nutrients.The soil samples were collected in four seasons(spring,S1;summer,S2;autumn,S3;and winter,S4)from Suaeda wetland of Shuangtaizi River estuary,Northeast China,and the variations of bacterial community were evaluated by high-throughput sequencing.Soil properties presented a significant seasonal change,including p H,carbon(C)and total nitrogen(TN),and the microbial diversity,richness and structure also differed with seasons.Canonical correspondence analysis(CCA)and Mantel tests implied that soil p H,C and TN were the key factors structuring the microbial community.Gillisia(belonging to Bacteroidetes)and Woeseia(affiliating with Gammaproteobacteria)were the two primary components in the rhizosphere soils,displaying opposite variations with seasons.Based on PICRUSt(Phylogenetic Investigation of Communities by Reconstruction of Unobserved States)prediction,the xenobiotics biodegradation related genes exhibited a seasonal decline,while the majority of biomarker genes involved in nitrogen cycle showed an ascending trend.These findings could advance the understanding of rhizosphere microbiota of Suaeda in estuarine wetland.

关 键 词：Microbial community Suaeda RHIZOSPHERE Nitrogen metabolism Seasonal variation 

分 类 号：S154.3[农业科学—土壤学]