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The effect of cylindrospermopsin on the bacterioplankton community:a microcosm experiment on water from dishui lake,Shanghai,China

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Journal of Oceanology and Limnology 2022年第5期40卷 1829-1839页

作者： Sicheng YIN Ruohan HUANG Erik JEPPESEN Lijing CHEN Liqing WANG Xin FANG Wei ZHANG Engineering Research Center of Environmental DNA and Ecological Water Health Assessment Shanghai Ocean UniversityShanghai 201306China Department of Ecoscience Aarhus UniversitySilkeborg 8600Denmark Sino-Danish Centre for Education and Research(SDC) University of Chinese Academy of SciencesBeijing 100049China Limnology Laboratory and EKOSAM Department of Biological SciencesMiddle East Technical UniversityAnkara 06800Turkey Institute of Marine Sciences Middle East Technical UniversityMersin 33731Turkey School of Business Macao University of Science and TechnologyTaipaMacao 999078China

Eutrophication and climate warming have intensified the global expansion of invasive cyanobacteria such as Cylindrospermopsis *** Chrysosporum ***(CYN)produced by species of the latter two genera may harm phytoplankton,zooplankton,and ***,effects of CYN on the bacterioplankton community have not been *** on high-throughput sequencing,we explored the effect of CYN on the structure and function of the bacterioplankton community by adding pure CYN to in-situ water collected from a brackish coastal shallow lake:dishui lake,*** found that most bacterioplankton taxa had a certain tolerance potential to CYN,but that high concentrations of CYN(40μg/L)caused a significant decrease in microbial abundance and functional *** the dominant phyla,Actinobacteria had the strongest tolerance to *** analysis indicated that CYN caused shifts in the community structure of the bacterioplankton,reducing community stability and structural *** CYN concentrations also reduced the correlation between the different bacterioplankton groups,and the abundances of some bacterial taxa associated with the denitrification function and the process of carbon transfer in the microbial food web were *** study provide s new insight into the response of the bacterioplankton communities to harmful algal toxins produced by cyanobacteria.

关键词： cylindrospermopsin bacterioplankton denitrification function carbon cycles dishui lake

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