Microcystis aeruginosa is the dominant species during cyanobacterial blooms in freshwater lakes. In the present study, we compared the bioaccumulation characteristics of cadmium (Cd) and zinc (Zn) in Microcystis cells. In short-term uptake tests, a rapid sorption of Cd and Zn occurred in the first few minutes, with a subsequent slower internalization process. No obvious difference was observed between Zn and Cd in terms of their short-term uptake kinetics. In efflux experiments, elimination of Zn from the cells was faster than that of Cd. In the 72-h exposure tests, the intracellular Cd concentrations increased with exposure time whereas the intracellular Zn concentrations always reached a plateau. The cellular Cd showed greater variation than the cellular Zn at various free Cd2+ or Zn2+ concentrations. The differences in Cd and Zn accumulation and elimination indicated that Microcystis cells had a higher bioaccumulation capacity for Cd than for Zn. In field studies, the bioconcentration factor (BCF) of Cd in lake-harvested Microcystis was more than 10 times higher than those of other metals. The results of the present study strongly suggested that the bloom-forming Microcystis may affect the Cd transportation and biogeochemical cycling in eutrophic freshwater ecosystems.
机构:
MNHN, EA Ecosyst & Interact Tox 4105, USM505, Paris 05, France
SCE, Dept Eau, Nantes, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Briand, Enora
Escoffier, Nicolas
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Inst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
INRA, UMR CARRTEL, Thonon Les Bains, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Escoffier, Nicolas
Straub, Cecile
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机构:
Inst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Straub, Cecile
Sabart, Marion
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机构:
Inst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Univ Clermont Ferrand 2, CNRS, Lab Microorganismes Genome & Environm, UMR 6023, Aubiere, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Sabart, Marion
Quiblier, Catherine
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机构:
MNHN, EA Ecosyst & Interact Tox 4105, USM505, Paris 05, France
Univ Paris Diderot, PRG, Paris, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
Quiblier, Catherine
Humbert, Jean-Francois
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机构:
Inst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
INRA, UMR CARRTEL, Thonon Les Bains, FranceInst Pasteur, CNRS, Unite Cyanobacteries, URA 2172, F-75724 Paris 15, France
机构:
Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
Wang, Binliang
Li, Yingying
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机构:
Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
Li, Yingying
Zheng, Junli
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机构:
Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
Zheng, Junli
Hu, Yiwei
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机构:
Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
Hu, Yiwei
Wang, Xiaojun
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机构:
Shaoxing Univ, Dept Math, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
Wang, Xiaojun
Hu, Baowei
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h-index: 0
机构:
Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R ChinaShaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
机构:
Ludong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Xu, Zhiguang
Gao, Guang
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机构:
Huaihai Inst Technol, Jiangsu Key Lab Marine Bioresources & Environm, Lianyungang 222005, Peoples R China
Huaihai Inst Technol, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Gao, Guang
Tu, Bo
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机构:
Hubei Univ Technol, Hubei Prov Cooperat Innovat Ctr Ind Fermentat, Wuhan 430068, Hubei, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Tu, Bo
Qiao, Hongjin
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机构:
Ludong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Qiao, Hongjin
Ge, Hongmei
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机构:
Hubei Univ Technol, Hubei Prov Cooperat Innovat Ctr Ind Fermentat, Wuhan 430068, Hubei, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Ge, Hongmei
Wu, Hongyan
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h-index: 0
机构:
Ludong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
Hubei Univ Technol, Hubei Prov Cooperat Innovat Ctr Ind Fermentat, Wuhan 430068, Hubei, Peoples R ChinaLudong Univ, Coll Life Sci, Yantai 264025, Shandong, Peoples R China
机构:
Cent China Normal Univ, Coll Life Sci, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Coll Life Sci, Wuhan 430079, Hubei, Peoples R China
Song, Yanfang
Qiu, Baosheng
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机构:
Cent China Normal Univ, Coll Life Sci, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Coll Life Sci, Wuhan 430079, Hubei, Peoples R China
机构:
Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Wang, Binliang
Wang, Xi
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机构:
Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Wang, Xi
Hu, Yiwei
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机构:
Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Hu, Yiwei
Chang, Mingxian
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h-index: 0
机构:
Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Chang, Mingxian
Bi, Yonghong
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机构:
Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Bi, Yonghong
Hu, Zhengyu
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机构:
Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R ChinaChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China