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Unveiling microplastic's ' s role in nitrogen cycling: Metagenomic insights from estuarine sediment microcosms

文献类型：期刊论文

作者Wang, Xiaodan1,2,3; Li, Jiasen1,2,3; Wang, Dongyu1,2,3; Sun, Chaofan1,2,3; Zhang, Xiaoli2; Zhao, Jianmin1,2,3; Teng, Jia1,2,3; Wang, Qing1,2,3
刊名ENVIRONMENTAL POLLUTION
出版日期2024-10-15
卷号359页码:12
关键词Microplastics Nitrogen cycling Metagenomic Functional genes Dissolved oxygen
ISSN号0269-7491
DOI10.1016/j.envpol.2024.124591
通讯作者Wang, Qing(qingwang@yic.ac.cn)
英文摘要Marine microplastics (MPs) pollution, with rivers as a major source, leads to MPs accumulation in estuarine sediments, which are also nitrogen cycling hotspots. However, the impact of MPs on nitrogen cycling in estuarine sediments has rarely been documented. In this study, we conducted microcosm experiment to investigate the effects of commonly encountered polyethylene (PE) and polystyrene (PS) MPs, with two MPs concentrations (0.3% and 3% wet sediment weight) based on environmental concentration considerations and dose-response effects, on sediment dissolved oxygen (DO) diffusion capacity and microbial communities using microelectrode system and metagenomic analysis respectively. The results indicated that high concentrations of PE-MPs inhibited DO diffusion during the mid-phase of the experiment, an effect that dissipated in the later stages. Metagenomic analysis revealed that MP treatments reduced the relative abundance of dominant microbial colonies in the sediments. The PCoA results demonstrated that MPs altered the microbial community structure, particularly evident under high concentration PE-MPs treatments. Functional analysis related to the nitrogen cycle suggested that PS-MPs promoted the nitrification, denitrification, and DNRA processes, but inhibited the ANRA process, while PE-MPs had an inhibitory effect on the nitrate reduction process and the ANRA process. Additionally, the high concentration of PE-MPs treatment significantly stimulated the abundance of genus (Bacillus) by 34.1% and genes (lip, pnbA) by 100-187.5% associated with plastic degradation, respectively. Overall, in terms of microbial community structure and the abundance of nitrogen cycling functional genes, PEand PS- MPs exhibit both similarities and differences in their impact on nitrogen cycling. Our findings highlight the complexity of MP effects on nitrogen cycling in estuarine sediments and high concentrations of PE-MP stimulated plastic-degrading genus and genes.
WOS关键词HUMAN GUT MICROBIOME ; POLLUTION ; CONSUMPTION ; DIVERSITY ; SEA
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001278838400001
资助机构National Natural Science Fund of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Two-Hundred Talents Plan of Yantai ; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/35678]  
专题海岸带生物学与生物资源利用重点实验室
中国科学院牟平海岸带环境综合试验站
海岸带生物资源高效利用研究与发展中心
通讯作者Wang, Qing
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Muping Coastal Environm Res Stn, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res & Dev Ctr Efficient Utilizat Coastal Bioresour, Yantai 264003, Peoples R China
3.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiaodan,Li, Jiasen,Wang, Dongyu,et al. Unveiling microplastic's ' s role in nitrogen cycling: Metagenomic insights from estuarine sediment microcosms[J]. ENVIRONMENTAL POLLUTION,2024,359:12.
APA Wang, Xiaodan.,Li, Jiasen.,Wang, Dongyu.,Sun, Chaofan.,Zhang, Xiaoli.,...&Wang, Qing.(2024).Unveiling microplastic's ' s role in nitrogen cycling: Metagenomic insights from estuarine sediment microcosms.ENVIRONMENTAL POLLUTION,359,12.
MLA Wang, Xiaodan,et al."Unveiling microplastic's ' s role in nitrogen cycling: Metagenomic insights from estuarine sediment microcosms".ENVIRONMENTAL POLLUTION 359(2024):12.

入库方式： OAI收割

来源：烟台海岸带研究所

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