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题名: Genotypic responses of bacterial community structure to a mixture of wastewater-borne PAHs and PBDEs in constructed mangrove microcosms
作者: Wang, Yafen1, 3, 4; Wu, Yan1; Wu, Zhenbin3; Tam, Nora Fung-Yee1, 2
关键词: Mangrove constructed wetland ; PAHs and PBDEs ; Tidal regime ; Bacterial community analysis ; DGGE ; CCA
刊名: JOURNAL OF HAZARDOUS MATERIALS
发表日期: 2015-11-15
DOI: 10.1016/j.jhazmat.2015.05.003
卷: 298, 页:91-101
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
英文摘要: Mangrove microcosms capable of removing polycyclic aromatic hydrocarbons (PAHs) and polybrominated diphenyl ethers (PBDEs) from wastewater were established under everyday tidal and non-tidal flooding regimes, along with two different mangrove species. Defining how bacterial communities change with pollutants or across treatments will contribute to understanding the microbial ecology of in situ bioremediation systems. A semi-nested PCR-DGGE (denaturing gradient gel electrophoresis) approach was employed, with known genus/species-specific primers targeting the 16S rRNA genes of Sphingomonas and Mycobacterium (related to PAH degradation) and Dehalococcoides (related to PBDE degradation). Results showed that the composition of Mycobacterium- and Dehalococcoides-like populations was critically determined by tidal regime during a medium-term (4-8 months) exposure, while that of Sphingomonas-like population, along with total bacterial community, was more dependent on sediment layer and became prominently affected by tidal regime till the end of 8-month treatment. The effect of plant species was relatively small. Canonical correspondence analysis (CCA) further revealed that Sphingomonas- and Mycobacterium-like populations were significantly associated with phenanthrene and benzo(a)pyrene, respectively, while Dehalococcoides-like population was the only group significantly related to the highest PBDE congener (BDE-209) in the mangrove microcosms. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYCYCLIC AROMATIC-HYDROCARBONS ; POLYBROMINATED DIPHENYL ETHERS ; COMPLEX MICROBIAL COMMUNITIES ; GEL-ELECTROPHORESIS ANALYSIS ; 16S RIBOSOMAL-RNA ; REDUCTIVE DEBROMINATION ; MYCOBACTERIUM ; DIVERSITY ; BIODEGRADATION ; DEGRADATION
语种: 英语
WOS记录号: WOS:000360595800010
ISSN号: 0304-3894
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27168
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China
2.City Univ Hong Kong, State Key Lab Marine Pollut, Kowloon, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
4.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China
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