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梁子湖与后官湖浮游细菌的群落结构特征
引用本文:邹沈娟,尹立强,赵博礼,陈培培,魏蒲生,马徐发.梁子湖与后官湖浮游细菌的群落结构特征[J].水生态学杂志,2021,42(2):33-41.
作者姓名:邹沈娟  尹立强  赵博礼  陈培培  魏蒲生  马徐发
作者单位:华中农业大学水产学院,大冶湖生态文化旅游开发有限公司,华中农业大学水产学院,华中农业大学水产学院,大冶湖生态文化旅游开发有限公司,华中农业大学水产学院
基金项目:公益性行业科研专项“湖泊水库养殖容量及生态增养殖技术研究与示范”(201303056)
摘    要:探究浮游细菌群落结构以及微生物与环境因子的相关性,可为湖泊环境评价和生态治理提供理论依据。选取湖北境内的梁子湖和后官湖,于2018年4月分别设置10个和5个采样点,进行浮游细菌与水体理化指标采样调查;通过16S rRNA基因高通量测序,分析比较浮游细菌群落结构及其多样性的差异,并通过冗余分析(RDA)探讨环境因子与浮游细菌群落结构的关系。结果表明,梁子湖和后官湖均有较高的浮游细菌群落多样性,其Shannon指数分别为3.974~4.743和3.924~4.500;梁子湖与后官湖的浮游细菌群落结构有所差异,梁子湖菌群隶属于放线菌门(Actinomycetes)、变形菌门(Proteobacteria)、拟杆菌门(Bacteroides)、蓝细菌门(Cyanobacteria)、疣微菌门(Verrucomicrobia)、绿菌门(Chlorobi)、绿弯菌门(Chloroflexi)、装甲菌门(Armatimonadetes)、厚壁菌门(Firmicutes)和硝化螺旋菌门(Nitrospirae);后官湖菌群隶属于放线菌门、蓝细菌门、变形菌门、拟杆菌门、疣微菌门、芽单胞菌门(Gemmatimonadetes)、绿弯菌门、绿菌门、浮霉菌门(Planctomycetes)、装甲菌门和螺旋体菌门(Saccharibacteria);其中,梁子湖的优势菌群为放线菌门(20.09%~43.23%)和变形菌门(21.35%~35.28%),而后官湖的优势菌群为放线菌门(20.70%~42.69%)和蓝细菌门(14.40%~45.77%)。RDA分析表明,总氮(TN)、pH、总磷(TP)是影响微生物群落结构的主要环境因子。

关 键 词:浮游细菌  群落结构  环境因子  梁子湖  后官湖
收稿时间:2019/5/18 0:00:00
修稿时间:2021/3/23 0:00:00

Bacterioplankton Community Structure Characteristics in Liangzi Lake and Houguan Lake, Wuhan
ZOU Sheng-juan,YIN Li-qiang,Zhao bo-li,CHEN Pei-pei,WEI Pu-sheng,MA Xu-fa.Bacterioplankton Community Structure Characteristics in Liangzi Lake and Houguan Lake, Wuhan[J].Journal of Hydroecology,2021,42(2):33-41.
Authors:ZOU Sheng-juan  YIN Li-qiang  Zhao bo-li  CHEN Pei-pei  WEI Pu-sheng  MA Xu-fa
Affiliation:College of Fisheries, Huazhong Agricultural University,Daye Lake Ecological Cultural Tourism Development Co, Ltd,College of Fisheries, Huazhong Agricultural University,College of Fisheries, Huazhong Agricultural University,Daye Lake Ecological Cultural Tourism Development Co, Ltd,College of Fisheries, Huazhong Agricultural University
Abstract:Microorganisms are an important part of the freshwater ecosystem, responsible for the biogeochemical cycle of nutrients and the biotransformation of organic matter. The microbial community is very sensitive to environmental changes and can be used to indicate aquatic ecological environment. In this paper, we discussed the relationship between planktonic bacterial community structure and environmental factors, and provided theoretical support for lake management and evaluation. In April 2018, two eutrophic lakes of Lake Liangzi and Lake Houguan were analyzed for the physical and chemical properties of the water and the plankton bacterial community survey. High-throughput sequencing of 16S rRNA genes was used to analyze and compare the differences in the structure and diversity of planktonic bacterial communities, and to explore the relationship between environmental factors and the structure of planktonic bacterial communities through redundancy analysis (RDA). The results showed that both Lake Liangzi and Lake Houguan have high diversity of planktonic bacterial community (Shannon index of Lake Liangzi and Lake Houguan are 3.974-4.743 and 3.924-4.500, respectively). And the planktonic bacterial community structure of Lake Liangzi and Lake Houguan were different. The flora of Lake Liangzi were mainly affiliated with Actinomycetes, Proteobacteria, Bacteroides, Cyanobacteria, Verrucomicrobia, Chlorobi, Chloroflexi, Armatimonadetes, Firmicutes and Nitrospirae. The flora Lake Houguan were mainly affiliated with Actinomycetes, Cyanobacteria, Proteobacteria, Bacteroides, Verrucomicrobia, Gemmatimonadetes, Chloroflexi, Chlorobi, Planctomycetes, Armatimonadetes and Saccharibacteria. And the dominant flora of Lake Liangzi were Actinomycetes(20.09%-43.23%) and Proteobacteria(21.35%-35.28%), while the dominant flora of Lake Houguan were Actinomycetes(20.70%-42.69%) and Cyanobacteria(14.4%-45.77%). Redundancy analysis (RDA) found that TN, pH, and TP are the main environmental factors affecting the microbial community structure.
Keywords:planktonic bacteria  community structure  environmental factors  Lake Liangzi  Lake Houguan
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