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Abiotic environmental factors override phytoplankton succession in shaping both free-living and attached bacterial communities in a highland lake
Wang,Huan1; Zhu,Rong1; Zhang,Xiaolin1; Li,Yun1,2; Ni,Leyi1; Xie,Ping1,3; Shen,Hong1
2019-10-31
Source PublicationAMB Express
ISSN2191-0855
Volume9Issue:1Pages:1-13
Abstract

AbstractBacterial communities are an important part of biological diversity and biogeochemical cycling in aquatic ecosystems. In this study, the relationship amongst the phytoplankton species composition and abiotic environmental factors on seasonal changes in the community composition of free-living and attached bacteria in Lake Erhai were studied. Using Illumina high-throughput sequencing, we found that the impact of environmental factors on both the free-living and attached bacterial community composition was greater than that of the phytoplankton community, amongst which total phosphorus, Secchi disk, water temperature, dissolved oxygen and conductivity strongly influenced bacterial community composition. Microcystis blooms associated with subdominant Psephonema occurred during the summer and autumn, and Fragilaria, Melosira and Mougeotia were found at high densities in the other seasons. Only small numbers of algal species-specific bacteria, including Xanthomonadaceae (Proteobacteria) and Alcaligenaceae (Betaproteobacteria), were tightly coupled to Microcystis and Psephonema during Microcystis blooms. Redundancy analysis showed that although the composition of the bacterial communities was controlled by species composition mediated by changes in phytoplankton communities and abiotic environmental factors, the impact of the abiotic environment on both free-living and attached bacterial community compositions were greater than the impact of the phytoplankton community. These results suggest that the species composition of both free-living and attached bacterial communities are affected by abiotic environmental factors, even when under strong control by biotic factors, particularly dominant genera of Microcystis and Psephonema during algal blooms.

KeywordAbiotic environmental factors Attached bacteria Free-living bacteria Phytoplankton community Variation partitioning in redundancy analysis
DOI10.1186/s13568-019-0889-z
Language英语
WOS IDBMC:10.1186/s13568-019-0889-z
PublisherSpringer Berlin Heidelberg
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/33973
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorXie,Ping; Shen,Hong
Affiliation1.Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People’s Republic of China
2.Nanjing Institute of Geography & Limnology, Chinese Academy of Science, Nanjing 210008, China.
3.State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
Recommended Citation
GB/T 7714
Wang,Huan,Zhu,Rong,Zhang,Xiaolin,et al. Abiotic environmental factors override phytoplankton succession in shaping both free-living and attached bacterial communities in a highland lake[J]. AMB Express,2019,9(1):1-13.
APA Wang,Huan.,Zhu,Rong.,Zhang,Xiaolin.,Li,Yun.,Ni,Leyi.,...&Shen,Hong.(2019).Abiotic environmental factors override phytoplankton succession in shaping both free-living and attached bacterial communities in a highland lake.AMB Express,9(1),1-13.
MLA Wang,Huan,et al."Abiotic environmental factors override phytoplankton succession in shaping both free-living and attached bacterial communities in a highland lake".AMB Express 9.1(2019):1-13.
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