Press perturbations of microplastics and antibiotics on freshwater micro-ecosystem: Case study for the ecological restoration of submerged plants
文献类型：期刊论文
| 作者 | Zhang, Siyu; Wang, Hao ; Liu, Miaomiao; Yu, Hongwei; Peng, Jianfeng; Cao, Xiaofeng; Wang, Chunrong; Liu, Ruiping; Kamali, Mohammadreza; Qu, Jiuhui
|
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2022 |
| 卷号 | 226页码:119248-1-12 |
| ISSN号 | 0043-1354 |
| 关键词 | Microplastic Antibiotics Combined pollution Microbial diversity Nitrogen cycle |
| 英文摘要 | Microplastics (MPs) can adsorb antibiotics to form complex pollutants, which seriously threatens the health of freshwater ecosystems. Few studies have examined the combined pollution characteristics of microplastics (MPs) and antibiotics in restored freshwater ecosystems and their effects on the growth traits of the aquatic primary producers. We studied both the ecotoxicological effects of polyethylene (PE) MPs and the antibiotics sulfanil-amide (sulfa, SA) on the structural (diversity etc.,) and functional (nutrient cycling etc.,) properties of water--plant-sediment ecosystems. The synergistic toxic effects of PE and SA resulted in a reduction in the chlorophyll content and chloroplast fluorescence. Meanwhile, PE and SA single/combined pollution stress inhibits the radial oxygen loss in roots, and activates the antioxidant defense system in leaves. The change in the growth response characteristics of Vallisneria natans (V. natans) under oxidative stress induced by single/combined pollution showed a dosage effect. The microbial compositions of the overlying water and sediment were significantly changed by the pollution exposure, as evidenced by the increased microbial diversity and altered microbial taxa distribution. An increase in the total concentrations of sulfa in the overlying water was accompanied by an in-crease in the relative abundances of resistance genes. PE-MPs significantly affected the removal of total nitrogen and antibiotics from the overlying water. The interaction between PE and SA affects ammonia and nitrite ni-trogen exchange in water-sediment systems. Thus, this study investigated the effects of combined MP and an-tibiotics pollution on the growth state, metabolic function, microbial community structure and microbial diversity of the freshwater ecosystems. The mechanism underlying of the combined polyethylene-sulfanilamide (PE-SA) effect on the V. natans was revealed. In addition, the correlation between different environmental factors was analyzed, and a structural equation model was constructed. This study provides primary data for evaluating the ecological and environmental effects of combined PE-SA pollution and its possible risks. Moreover, it pro-vides a reference index for the study of ecological wetland environments and phytoremediation. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48467]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Research Center for Eco-Environmental Sciences (RCEES) 2.KU Leuven 3.China University of Mining & Technology 4.Tsinghua University 5.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Zhang, Siyu,Wang, Hao,Liu, Miaomiao,et al. Press perturbations of microplastics and antibiotics on freshwater micro-ecosystem: Case study for the ecological restoration of submerged plants[J]. WATER RESEARCH,2022,226:119248-1-12. |
| APA | Zhang, Siyu.,Wang, Hao.,Liu, Miaomiao.,Yu, Hongwei.,Peng, Jianfeng.,...&Qu, Jiuhui.(2022).Press perturbations of microplastics and antibiotics on freshwater micro-ecosystem: Case study for the ecological restoration of submerged plants.WATER RESEARCH,226,119248-1-12. |
| MLA | Zhang, Siyu,et al."Press perturbations of microplastics and antibiotics on freshwater micro-ecosystem: Case study for the ecological restoration of submerged plants".WATER RESEARCH 226(2022):119248-1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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