Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater

doi:10.1016/j.scitotenv.2020.139237

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater
	Tu, Chen 1,2,3; Chen, Tao 1; Zhou, Qian 1; Liu, Ying 1; Wei, Jing 1,2; Luo, Yongming 1,2; Waniek, Joanna J.3; Luo, Yongming 4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-09-10
卷号	734 页码:139237
关键词	Microplastics Biofilm formation Properties change Exposure time and depth Seawater
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.139237
英文摘要	The effects of microbial colonization and biofilm formation on microplastics in the marine and coastal environments have aroused global concern recently. However, the simultaneous influences of exposure time and depth on biofilm formation, and subsequently on the properties variations of microplastics is less studied. In this study, polyethylene (PE) film was exposed at three depths (2 m, 6 m, and 12 m) for three time periods (30 days, 75 days, and 135 days) in the coastal seawater of Yellow Sea, China. The results show that the total amount of biofilms markedly increased with exposure time, but decreased with water depth. Typical morphologies and compositions of biofilms such as coccus-, rod-, disc-shaped bacteria and filaments, as well as a dense layer of extracellular polymeric substances were observed on the surfaces of the PE microplastics. Biofilm formation could decrease the hydrophobicity of PE microplastics, and increase the abundances of hydrophilic C-O and C(sic)O groups on the surface of PE. Alphaproteobacteria, Gammaproteobacteria and Bacteroidia were identified as the core microbiome of the PE associated biofilms, while the dominant bacteria families vary from the early to the late phases of the biofilm formation. Our results indicate that microplastics associated biofilms could affect the environmental processes and fates of microplastics in the marine and coastal environment.
WOS关键词	DENSITY POLYETHYLENE ; COMMUNITY STRUCTURE ; PLASTIC DEBRIS ; BOHAI SEA ; BACTERIAL ; COLONIZATION ; WATER ; BIODEGRADATION ; AGGREGATION ; DEGRADATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000540256200001
资助机构	National Key Research and Development Programof China, China [2016YFC1402202] ; Key Research Program of Frontier Sciences, CAS, China [QYZDJSSW-DQC015] ; International Partnership Program of Chinese Academy of Sciences, China [133337KYSB20160003] ; Sino-German International Cooperation Project, BMBF, GermanyFederal Ministry of Education & Research (BMBF) [03F0786A]
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30491]
专题	烟台海岸带研究所_近岸生态与环境实验室
作者单位	1.Chinese Acad Sci, Yantni Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China; 3.Leibuiz Inst Baltic Sea Res, D-18119 Rostock, Germany; 4.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Pollut & Pollut Remediat, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Tu, Chen,Chen, Tao,Zhou, Qian,et al. Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,734:139237.
APA	Tu, Chen.,Chen, Tao.,Zhou, Qian.,Liu, Ying.,Wei, Jing.,...&Luo, Yongming.(2020).Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater.SCIENCE OF THE TOTAL ENVIRONMENT,734,139237.
MLA	Tu, Chen,et al."Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater".SCIENCE OF THE TOTAL ENVIRONMENT 734(2020):139237.