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题名: Characterization of bacterial communities in wetland mesocosms receiving pharmaceutical-enriched wastewater
作者: Zhang, Dongqing; Luo, Jinxue; Lee, Zarraz May Ping; Maspolim, Yogananda; Gersberg, Richard M.; Liu, Yu; Tan, Soon Keat; Ng, Wun Jern
刊名: ECOLOGICAL ENGINEERING
出版日期: 2016-05
卷号: 90, 页码:215-224
关键词: Constructed wetland ; Ibuprofen ; Bacterial community ; Pyrosequencing
DOI: 10.1016/j.ecoleng.2015.12.043
部门归属: 中国科学院环境生物技术重点实验室
英文摘要: A 16S rRNA gene multiplex 454 pyrosequencing approach was used to characterize the structure of the bacterial community in subsurface flow constructed wetlands planted with Typha angustifoha and unplanted wetland mesocosms receiving ibuprofen-enriched wastewater at a concentration of 250 mu g L-1. The removal efficiency of ibuprofen (IBP) in the planted beds (78.5%) was significantly higher than that in the unplanted beds (57.9%) (P <= 0.05). The presence of ibuprofen significantly (P <= 0.05) reduced the diversity of the bacterial community. In total, 20 phyla comprising 265 genera were identified. The most predominant phyla were Firmicutes (27.6%), Actinobacteria (26.0%) and Proteobacteria (24.9%), making up 57-95% of the 16S rDNA sequences. Other dominating phyla in wetland soils were Chloroflexi (7.3%), Bacteroidetes (2.7%), Synergistetes (2.1%), and Acidobacteria (2.0%). A distinct profile of bacterial community in the wetland mesocosms was observed after IBP enrichment. IBP-enrichment enhanced the relative abundance of Actinobacteria, Bacilli and gamma-Proteobacteria at class level. The efficient ibuprofen removal observed in this study suggested that the IBP-enriched wetland systems may have selected a restricted group of bacteria that was able to survive best in the disturbed condition and participate in the IBP biodegradation. Our findings also indicated that the presence of macrophytes may have a vital impact on the microbial community and planted wetlands may be more robust and buffered against significant shifts in microbial composition in response to IBP-disturbance. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36109
Appears in Collections:中国科学院环境生物技术重点实验室_期刊论文

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