基于Miseq的好氧反硝化菌源水脱氮的种群演变
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2020-04-29 12:54:18
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中国环境科学2016,36(4):1125~1135ChinaEnvironmentalScience基于Miseq的好氧反硝化菌源水脱氮的种群演变周石磊,黄廷林,张春华,白士远,何秀秀(西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西西安710055)摘要:为了研究好氧反硝化菌源水脱氮过程中水体微生物群落的演变,利用Miseq高通量测序法对投菌和对照两系统水体样本的微生物信息进行统计,并对两组样品进行了优化序列统计,OTU分布统计和分类学分析的基础分析;以及细菌群落结构,PCA,Rank-Abundance,Hcluster,Speeaceurn和OTU分布的高级分析.结果显示,投加贫营养好氧反硝化菌的源水系统的氮素得到有效去除,脱氮效果明显;层次聚类和主成分分析显示两系统内的群落结构发生变化,投菌系统与对照系统主要表现为变形菌和拟杆菌门;细菌主要门类和水质参数的相关性分析得出,水质指标对两系统群落变化作用明显;与此同时,投菌系统中有关氮循环的细菌有上升的变化过程.Mjscq高通量测序研究源水脱氮过程的微生物种群演变可行,为研究原位生物脱氮过程的水体微生物群落演变提供技术支撑,关键词:源水脱氮;好氧反硝化;Miseq测序;生物信息分析;微生物群落中图分类号:X172文献标识码:A文章编号:1000—6923(2016)04—1125~11BacterialcommunitystructuresofaerobicdenitrificationbacterianitrogenremovalprocessinsourcewaterexperimentbyusingMiseqhigh-throughputsequencingtechnique.ZHOUShi-lei,HUANGTing-lin’,ZHANGChun-hua,BAIShi-yuan,HEXiu-xiu(KeyLaboratoryofNorthwestWaterResource,EnvironmentandEcology,MinistryofEducation,SchoolofEnvironmentalandMunicipalEngineering,Xi’anUniversityofArchitectureandTechnology,Xi’an710055,China).ChinaEnvironmentalScience,2016,36(4):1125~1135Abstract:Miseqhigh-throughputsequencingtechniquewasusedtoinvestagethebacterialcommunitystructureofnitrogenremovalprocessinsourcewaterexperimentsystemsaddedaerobicdenitrificationbacteria.Bioinformaticsanalysiswerecarriedontheforthesamplesofbacteriaandcontrolsystems.Then,thefundamentalanalysis,Optimizedsequencestatistics,OTUdistribution,andTaxonomicanalysis;theAdvancedanalysis,themicrobialcommunity,PCA,Rank-Abundance,Hcluster,Specaccuna,andVennofOTUdistribution.Asaresult,thenitrogenofbacteriasystemwasremovedobviously,andHierarchicalcluateringandPCAshowedthatthemicrobialcommunitystructureofbacteriaandcontrolsystemshaschanged,andtheProtebactericeandBacteroideteswerethemainphyluminexperimentsystems.Meanwhile,theN—functionalmicrobialofbacteriasystemhadanincreaseprocess,obviously,whichWasconsistentwiththechangesofaerobicdenitrificationbacteria.Fromalltheresults,theMiseqhigh-throughputsequencingtechniqueWasanefectivetooltoexplorethechangesofbacterialco
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