Correlating microbial community with physicochemical indices and structures of a full-scale integrated constructed wetland system.
Microorganisms play a key role in removal of pollutants in constructed wetlands (CWs). The aim of this study was to investigate the composition and diversity of microbes in a full-scale integrated constructed wetland system and examine how microbial assemblages were shaped by the structures and physicochemical properties of the sediments. The microbial assemblages were determined using 16S rRNA high-throughput sequencing. Results showed that the microbial phenotypes were more diverse in the system than in single CWs. The genera of Zoogloea, Comamonas, Thiobacillus, Nitrosospira, Denitratisoma, Azonexus, and Azospira showed relatively high abundances, which contributed to the removal of organic matter and nitrogen. The interactions among the three CWs in series acted a key role in the increase of phylogenetic diversity and high percentage of shared operational taxonomic units. In the system, some core microbes always existed even with the changing environment. Redox potential and NH4-N were the important factors affecting the overall microbial community patterns. Total organic carbon had a relatively high impact on some denitrifiers. The results from this study should be useful to better understand the microbial mechanism of wastewater treatment in integrated constructed wetland systems.
School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, Guangdong, 510275, China.|South China Institute of Environmental Science, Ministry of Environment Protection, Guangzhou, Guangdong, 510655, China.
Yinghai
Y
Wu
School of Environmental Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China.
Rui
R
Han
School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, Guangdong, 510275, China.
Xunan
X
Yang
South China Institute of Environmental Science, Ministry of Environment Protection, Guangzhou, Guangdong, 510655, China.
Xiaohang
X
Fang
School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China.
Xi
X
Chen
South China Institute of Environmental Science, Ministry of Environment Protection, Guangzhou, Guangdong, 510655, China.
Di
D
Yang
School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, No. 135, Xingang Xi Road, Guangzhou, Guangdong, 510275, China. Zhangrd@mail.sysu.edu.cn.
Renduo
R
Zhang
D001105:Archaea / Q000145:classification* / Q000235:genetics / Q000378:metabolism*; D001419:Bacteria / Q000145:classification* / Q000235:genetics / Q000378:metabolism*; D044822:Biodiversity; D059014:High-Throughput Nucleotide Sequencing; D064307:Microbiota / Q000235:genetics; D010084:Oxidation-Reduction; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater / Q000382:microbiology*; D014871:Water Microbiology; D018508:Water Purification / Q000379:methods; D053833:Wetlands
D012336:RNA, Ribosomal, 16S; D062065:Wastewater
High-throughput; Integrated constructed wetland; Microbial community; Physicochemical properties