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

doi:10.1016/j.envpol.2024.124591

	Unveiling microplastic's ' s role in nitrogen cycling: Metagenomic insights from estuarine sediment microcosms
	Wang, Xiaodan 1,2,3; Li, Jiasen 1,2,3; Wang, Dongyu 1,2,3; Sun, Chaofan 1,2,3; Zhang, Xiaoli1 ; Zhao, Jianmin1,2,3 ; Teng, Jia 1,2,3; Wang, Qing1,2,3
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
	2024-10-15
卷号	359 页码:12
关键词	Microplastics Nitrogen cycling Metagenomic Functional genes Dissolved oxygen
DOI	10.1016/j.envpol.2024.124591
通讯作者	Wang, Qing([email protected])
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.
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
收录类别	SCI
语种	英语
关键词[WOS]	HUMAN GUT MICROBIOME ; POLLUTION ; CONSUMPTION ; DIVERSITY ; SEA
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:001278838400001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/35679
专题	海岸带生物学与生物资源利用重点实验室支撑部门_中国科学院牟平海岸带环境综合试验站海岸带生物学与生物资源利用重点实验室_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, Res & Dev Ctr Efficient Utilizat Coastal Bioresour, Yantai 264003, Peoples R China 2.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Muping Coastal Environm Res Stn, Yantai 264003, 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.