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首页> 外文期刊>Environmental Science & Technology >Colonization Characteristics of Bacterial Communities on Plastic Debris Influenced by Environmental Factors and Polymer Types in the Haihe Estuary of Bohai Bay, China
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Colonization Characteristics of Bacterial Communities on Plastic Debris Influenced by Environmental Factors and Polymer Types in the Haihe Estuary of Bohai Bay, China

机译：渤海湾海河口环境因素和聚合物类型对塑料碎片上细菌群落的定殖特性

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摘要

The colonization characteristics of bacterial communities on microplastics or plastic debris (PD) have generated great concern in recent years. However, the influence of environmental factors and polymer types on the formation of bacterial communities on PD in estuarine areas is less studied. To gain additional insights, five types of PD (polyvinyl chloride, polypropylene, polyethylene, polystyrene, and polyurethane) were exposed for three-time periods (two weeks, four weeks, and six weeks) in the Haihe Estuary. 16S rRNA gene sequencing was used to identify the bacterial communities on PD, in seawater, and in sediment samples. The results indicate that the average growth rate of a biofilm is affected by nutrients (total nitrogen and total phosphorus) and salinity. Furthermore, salinity is the primary factor affecting bacterial diversity of the colonies on PD. In addition, genera of bacteria show selectivity toward the PD polymer type and tend to colonize their preferred substrate. Compared with seawater and sediment, PD could be carriers for enrichment of Vibrio in the estuarine environment with salinity >= 26 (+/- 2 parts per thousand), which might increase the ecological risk of PD in marine environments.
机译：近年来，微生物群落在微塑料或塑料碎片（PD）上的定殖特性引起了极大的关注。然而，在河口地区，环境因素和聚合物类型对PD上细菌群落形成的影响尚待研究。为了获得更多的见解，在海河河口中暴露了五种PD（聚氯乙烯，聚丙烯，聚乙烯，聚苯乙烯和聚氨酯）三种时间（两周，四周和六周）。使用16S rRNA基因测序来鉴定PD，海水和沉积物样品中的细菌群落。结果表明，生物膜的平均生长速率受养分（总氮和总磷）和盐度的影响。此外，盐度是影响PD上菌落细菌多样性的主要因素。另外，细菌属对PD聚合物类型表现出选择性，并且倾向于定殖其优选的底物。与海水和沉积物相比，PD可能是盐度> = 26（千分之+/- 2份）的河口环境中弧菌富集的载体，这可能会增加PD在海洋环境中的生态风险。

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  • 来源
    《Environmental Science & Technology》 |2019年第18期|10763-10773|共11页
  • 作者

    Li Wenjie; Zhang Ying; Wu Nan; Zhao Ze; Xu Weian; Ma Yongzheng; Niu Zhiguang;

  • 作者单位

    Tianjin Univ Sch Marine Sci & Technol Tianjin 300072 Peoples R China;

    Nankai Univ Coll Environm Sci & Engn MOE Key Lab Pollut Proc & Environm Criteria Tianjin Key Lab Environm Technol Complex Trans Me Tianjin 300350 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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