| Dynamic variations of microbial community structure in Myriophyllum aquaticum constructed wetlands in response to different NH4+-N concentrations | |
Xu, Lina; Zhang, Bao; Peng, Xiawei; Zhang, Xupo; Sun, Bo; Sun, Haishu; Jiang, Cancan; Zhou, Sining; Zeng, Xiangui; Bai, Zhihui; Xu, Shengjun; Zhuang, Xuliang
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| 2020-06 | |
| Source Publication | PROCESS BIOCHEMISTRY
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| ISSN | 1359-5113 |
| Volume | 93Pages:55-62 |
| Abstract | Constructed wetlands (CWs) have received increasing attentions for their N removal performances, especially regarding NH4+-N. Different influent NH4+-N concentration may influence N removal efficiency in practice, while the effects of different NH4+-N concentrations on microorganisms removing N in CWs are poorly understood. In this study, surface flow CWs planted with Myriophyllum (M). aquaticum were established to investigate the influences of different NH4+-N concentrations on the composition, structure, and interactions of microbial community. Our findings suggested 105 mg/L NH4+-N CWs achieved highest N removal rate, removing 89.30 % NH4+-N and 92.34 % TN from the influent. The results of real-time quantitative polymerase chain reactions (qPCR) indicated abundances of nitrifying genes (nxrA) and denitrifying genes (narG, nirS, nirK, and nosZ) were increased by increasing NH4+-N concentrations, and the strongest effects were observed in narG (8-fold) and nosZ genes (11-fold). Different NH4+-N concentrations was proved to alter composition and structure of microbial communities via high-throughput sequencing, e.g. denitrifiers including Brevendomonas.sp, Dokdonella.sp and Rhodococcus.sp were enriched obviously with increasing NH4+-N concentrations. In addition, network showed interactions among microbial populations and positive interactions were dramatically shifted and enhanced by increasing NH4+-N concentrations. |
| Department | 中国科学院环境生物技术重点实验室 |
| Keyword | Myriophyllum aquaticum Constructed wetlands Ammonium nitrogen concentrations Microbial community structure Denitrifiers |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/45155 |
| Collection | 中国科学院环境生物技术重点实验室 |
| Recommended Citation GB/T 7714 | Xu, Lina,Zhang, Bao,Peng, Xiawei,et al. Dynamic variations of microbial community structure in Myriophyllum aquaticum constructed wetlands in response to different NH4+-N concentrations[J]. PROCESS BIOCHEMISTRY,2020,93:55-62. |
| APA | Xu, Lina.,Zhang, Bao.,Peng, Xiawei.,Zhang, Xupo.,Sun, Bo.,...&Zhuang, Xuliang.(2020).Dynamic variations of microbial community structure in Myriophyllum aquaticum constructed wetlands in response to different NH4+-N concentrations.PROCESS BIOCHEMISTRY,93,55-62. |
| MLA | Xu, Lina,et al."Dynamic variations of microbial community structure in Myriophyllum aquaticum constructed wetlands in response to different NH4+-N concentrations".PROCESS BIOCHEMISTRY 93(2020):55-62. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Dynamic variations o（1826KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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