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窖水中微生物降解污染物的关键细菌
摘要点击 100  全文点击 43  投稿时间:2017-11-14  修订日期:2018-03-27
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中文关键词  集雨窖水  细菌群落组成  群落基因功能  微生物共现性关联网络  关键细菌
英文关键词  cellar water  community complexity  microbial community functional gene  association network of microbial co-occurrence  key bacteria
作者单位E-mail
杨浩 兰州交通大学环境与市政工程学院, 兰州 730070
寒旱地区水资源综合利用教育部工程研究中心, 兰州 730070 
haoyang7614236@163.com 
杨晓妮 甘肃农业大学资源与环境学院, 兰州 730070  
张国珍 兰州交通大学环境与市政工程学院, 兰州 730070
寒旱地区水资源综合利用教育部工程研究中心, 兰州 730070 
guozhenzhang126@126.com 
王宝山 兰州交通大学环境与市政工程学院, 兰州 730070
寒旱地区水资源综合利用教育部工程研究中心, 兰州 730070 
 
张翔 兰州交通大学环境与市政工程学院, 兰州 730070  
李健 兰州交通大学环境与市政工程学院, 兰州 730070  
中文摘要
      为探究以氮、磷及有机物污染为主要特征的、窖水中参与污染物降解的关键细菌及它们之间潜在的相关关系,基于16S rRNA的微生物组学截面数据,分析了窖水中细菌群落结构与功能及其与水质因子间的相关性,并通过微生物物种的同现或相关种间作用推断模型,构建了7个微生物菌属间的共现性关联网络.结果表明,窖水中存在具有相对特定生态功能的细菌,进行着诸多活跃的与新陈代谢功能基因相关的代谢活动;窖水微生物类群共现性关联网络中大部分节点的菌属营互利共生类型的生态关系;LacibacterArthrobacterCandidatus ProtochlamydiaMethylocaldumSulfuritaleaMycobacteriumAquirestisRhodobacterMethylotenera等菌属拥有较高的点度中心度;较强的互作关系发生在Sulfuritalea-Rhodobacter、Azospirillum-Rhodobacter、Methylocaldum-Rhodobacter、Arthrobacter-Rhodobacter、Rhodoplanes-Rhodobacter、Candidatus Protochlamydia-Rhodobacter、Methylotenera-Rhodobacter、Rhodobacter-Aquirestis、Mycobacterium-Rhodobacter、Planctomyces-Candidatus SolibacterPlanctomyces-LegionellaHymenobacter-Adhaeribacter、Luteolibacter-Crenothrix之间.综合分析节点微生物相关性、点度中心度及菌属间的互作强度,认为RhodobacterMethylocaldum、Methylotenera、Acinetobacter、Novosphingobium、Planctomyces、Hymenobacter、Luteolibacter为参与窖水污染物微生物降解的关键细菌,Rhodobacter为关键细菌的代表属.研究结果加深了对窖水中污染物微生物降解机制的认识.
英文摘要
      The study aimed to identify the key bacteria and the potential interactions among these bacteria during the degradation of pollutants in cellar water, The main pollution characteristics were nitrogen, phosphorus and organic pollution. The structure and function of the bacterial community and its correlation with water quality variables were analyzed. A network of seven associations of microbial co-occurrence was set up, based on 16S rRNA and the model for inferring co-occurrence or interspecific interactions of microbial species. This showed that there were a large number of microorganisms with relatively specific ecological functions in the cellar water, and that many metabolic activities were involved. The ecological relationships of most bacteria in the association network were a form of mutualism. The most prominent genera included Lacibacter, Arthrobacter, Candidatus Protochlamydia, Methylocaldum, Sulfuritalea, Mycobacterium, Aquirestis, Rhodobacter, and, Methylotenera. The strong associations were observed between following bacteria:Sulfuritalea-Rhodobacter, Azospirillum-Rhodobacter, Methylocaldum-Rhodobacter, Arthrobacter-Rhodobacter, Rhodoplanes-Rhodobacter, Candidatus Protochlamydia-Rhodobacter, Methylotenera-Rhodobacter, Rhodobacter-Aquirestis, Mycobacterium-Rhodobacter, Planctomyces-Candidatus Solibacter, Planctomyces-Legionella, Hymenobacter-Adhaeribacter, and Luteolibacter-Crenothrix. It was considered that Rhodobacter, Methylocaldum, Methylotenera, Acinetobacter, Novosphingobium, Planctomyces, Hymenobacter, and Luteolibacter were the key bacteria involved in microbial degradation of cellar water pollutants, and Rhodobacter was the representative genus of the key bacteria. The authors concluded that the research results improved understanding of the microbial degradation mechanism of pollutants in cellar water.

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