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题名: ACUTE TOXIC EFFECTS OF ZINC, CADMIUM, AND MERCURY ON THE GROWTHS OF THREE UNICELLULAR GREEN MICROALGAE WITH RELATIVELY HIGH INITIAL DENSITIES
作者: Li, Ming1; Wan, Chengyan1; Pan, Xiaojie1; Zou, Yi1; Chang, Jianbo1; Xie, Ping1, 2
通讯作者: Xie, P (reprint author), Chinese Acad Sci, Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China.
关键词: Microalgae ; zinc (Zn) ; cadmium (Cd) ; mercury (Hg) ; EC50
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2012
卷: 21, 期:6, 页:1349-1356
收录类别: SCI
文章类型: Article
部门归属: [Li, Ming; Wan, Chengyan; Pan, Xiaojie; Zou, Yi; Chang, Jianbo; Xie, Ping] Chinese Acad Sci, Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China; [Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: 948 project of the Ministry of Water Resources of the People's Republic of China[200902]; Major Science and Technology Program for Water Pollution Control and Treatment[2009ZX07528-003]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: There have been substantial heavy metal toxicity studies encompassing microalgal species, while many of these studies were done with very low initial cell density and the parameters are not applicable for recent biomonitoring practice (e.g. using bbe Algae Toximeter). This study evaluated the acute toxic effects of Zn, Cd and Hg on growth of three green microalgal species, Chlorella pyrenoidosa, Scenedesmus obliquus and Chlamydomonas reinhardtii, with relatively high initial densities of 5.37x10(6), 1.87x10(6) and 1.31x10(6) cells/mL respectively by using SE media without EDTA. The half maximal effective concentrations (EC50) for the three algae after 24-96h exposure to different concentrations of heavy metal ions were determined. Mercury was much more toxic to the three algal species than Zn and Cd, and the EC50 values ranged from 0.16 to 4.83 mg Hg/L. The higher EC50 values in the present study than in some previous ones might be due to higher initial cell densities in our cultures. Scenedesmus obliquus was the most sensitive species to heavy metals, and thus has the potential to be used in biomonitoring practice, while Chlorella pyrenoidosa was the most tolerant.
英文摘要: There have been substantial heavy metal toxicity studies encompassing microalgal species, while many of these studies were done with very low initial cell density and the parameters are not applicable for recent biomonitoring practice (e.g. using bbe Algae Toximeter). This study evaluated the acute toxic effects of Zn, Cd and Hg on growth of three green microalgal species, Chlorella pyrenoidosa, Scenedesmus obliquus and Chlamydomonas reinhardtii, with relatively high initial densities of 5.37x10(6), 1.87x10(6) and 1.31x10(6) cells/mL respectively by using SE media without EDTA. The half maximal effective concentrations (EC50) for the three algae after 24-96h exposure to different concentrations of heavy metal ions were determined. Mercury was much more toxic to the three algal species than Zn and Cd, and the EC50 values ranged from 0.16 to 4.83 mg Hg/L. The higher EC50 values in the present study than in some previous ones might be due to higher initial cell densities in our cultures. Scenedesmus obliquus was the most sensitive species to heavy metals, and thus has the potential to be used in biomonitoring practice, while Chlorella pyrenoidosa was the most tolerant.
关键词[WOS]: PHAEODACTYLUM-TRICORNUTUM BOHLIN ; INDUCED OXIDATIVE STRESS ; SCENEDESMUS-OBLIQUUS ; CHLORELLA-VULGARIS ; CHLAMYDOMONAS-REINHARDTII ; CO2 CONCENTRATION ; COPPER ; ULTRASTRUCTURE ; ACCUMULATION ; CHLOROPHYTA
语种: 英语
WOS记录号: WOS:000305776800001
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16839
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China

Recommended Citation:
Li, Ming; Wan, Chengyan; Pan, Xiaojie; Zou, Yi; Chang, Jianbo; Xie, Ping.ACUTE TOXIC EFFECTS OF ZINC, CADMIUM, AND MERCURY ON THE GROWTHS OF THREE UNICELLULAR GREEN MICROALGAE WITH RELATIVELY HIGH INITIAL DENSITIES,FRESENIUS ENVIRONMENTAL BULLETIN,2012,21(6):1349-1356
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文件名: ACUTE TOXIC EFFECTS OF ZINC, CADMIUM, AND MERCURY ON THE GROWTHS OF THREE UNICELLULAR GREEN MICROALGAE .pdf
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