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首页> 外文期刊>Environmental Science & Technology >Effect of Disinfectant Water Age, and Pipe Materials on Bacterial and Eukaryotic Community Structure in Drinking Water Biofilm
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Effect of Disinfectant Water Age, and Pipe Materials on Bacterial and Eukaryotic Community Structure in Drinking Water Biofilm

机译：消毒水龄和管道材料对饮用水生物膜中细菌和真核生物群落结构的影响

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摘要

Availability of safe, pathogen-free drinking water is vital to public health; however, it is impossible to deliver sterile drinking water to consumers. Recent microbiome research is bringing new understanding to the true extent and diversity of microbes that inhabit water distribution systems. The purpose of this study was to determine how water chemistry in main distribution lines shape the microbiome in drinking water biofilms and to explore potential associations between opportunistic pathogens and indigenous drinking water microbes. Effects of disinfectant (chloramines, chlorine), water age (2.3 days, 5.7 days), and pipe material (cement, iron, PVC) were compared in parallel triplicate simulated water distribution systems. Pyrosequencing was employed to characterize bacteria and terminal restriction fragment polymorphism was used to profile both bacteria and eukaryotes inhabiting pipe biofilms. Disinfectant and water age were both observed to be strong factors in shaping bacterial and eukaryotic community structures. Pipe material only influenced the bacterial community structure (ANOSIM test, P ＜ 0.05). Interactive effects of disinfectant, pipe material, and water age on both bacteria and eukaryotes were noted. Disinfectant concentration had the strongest effect on bacteria, while dissolved oxygen appeared to be a major driver for eukaryotes (BEST test). Several correlations of similarity metrics among populations of bacteria, eukaryotes, and opportunistic pathogens, as well as one significant association between mycobacterial and proteobacterial operational taxonomic units, provides insight into means by which manipulating the microbiome may lead to new avenues for limiting the growth of opportunistic pathogens (e.g., Legionella) or other nuisance organisms (e.g., nitrifiers).
机译：安全，无病原体的饮用水的供应对公众健康至关重要；但是，不可能向消费者输送无菌饮用水。最近的微生物组研究为居住在供水系统中的微生物带来了真正的了解和多样性。这项研究的目的是确定主要分布线中的水化学如何塑造饮用水生物膜中的微生物组，并探讨机会病原体与本地饮用水微生物之间的潜在关联。在平行的三次平行水分配系统中，比较了消毒剂（氯胺，氯），水龄（2.3天，5.7天）和管道材料（水泥，铁，PVC）的影响。焦磷酸测序用于表征细菌，末端限制性片段多态性用于分析细菌和真核生物在管生物膜中的分布。消毒剂和水龄都是形成细菌和真核生物群落结构的重要因素。管道材料仅影响细菌群落结构（ANOSIM测试，P ＜0.05）。注意到消毒剂，管道材料和水龄对细菌和真核生物的相互作用。消毒剂浓度对细菌的影响最大，而溶解氧似乎是真核生物的主要驱动力（BEST测试）。细菌，真核生物和机会病原体种群之间相似性度量的几种相关性，以及分枝杆菌和蛋白细菌操作分类单位之间的一种重要关联，提供了对操纵微生物组可能会导致限制机会性生长的新途径的方法的见解。病原体（例如军团菌）或其他有害生物（例如硝化剂）。

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  • 来源
    《Environmental Science & Technology》 |2014年第3期|1426-1435|共10页
  • 作者

    Hong Wang; Sheldon Masters; Marc A. Edwards; Joseph O. Falkinham Ⅲ; Amy Pruden;

  • 作者单位

    Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States;

    Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States;

    Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States;

    Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States;

    Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States;

  • 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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