Tu, Chen1,2,3
; Chen, Tao1; Zhou, Qian1; Liu, Ying1; Wei, Jing1,2; Luo, Yongming1,2; Waniek, Joanna J.3; Luo, Yongming4发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
2020-09-10
卷号734页码:139237
关键词MicroplasticsBiofilm formationProperties changeExposure time and depthSeawater
DOI10.1016/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.
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]
收录类别SCI
语种英语
关键词[WOS]DENSITY POLYETHYLENE; COMMUNITY STRUCTURE; PLASTIC DEBRIS; BOHAI SEA; BACTERIAL; COLONIZATION; WATER; BIODEGRADATION; AGGREGATION; DEGRADATION
研究领域[WOS]Environmental Sciences & Ecology
WOS记录号WOS:000540256200001
引用统计被引频次：49[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30491
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
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 7714Tu, 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.
APATu, 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.
MLATu, 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.
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