文献类型：期刊文献

英文题名：Toxicity assessment of Chlorella vulgaris and Chlorella protothecoides following exposure to Pb(II)

作者：Zhang, Wei[1,2];Xiong, Bang[3];Chen, Lin[1,2];Lin, Kuangfei[1,2];Cui, Xinhong[3];Bi, Huasong[3];Guo, Meijin[4];Wang, Weiliang[4]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[3]Shanghai Inst Landscape Gardening, Shanghai 200233, Peoples R China;[4]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：36

期号：1

起止页码：51

外文期刊名：ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000320073700007)】；

基金：This research was financially supported by the National Forestry Public Welfare Science and Technology Research Program of China (201104088), the National Natural Science Foundation of China (40901148), the Major State Basic Research Development Program of China (2011CB200904), the Environmental Protection Science and Technology Research Program of Shanghai (2012-03), and the Science and Technology Committee Research Program of Shanghai (12DZ0502700). We also would like to thank the anonymous referees for their helpful comments on this paper.

语种：英文

外文关键词：Pb(II); Chlorella vulgaris; Chlorella protothecoides; Short-term toxicity; Long-term toxicity

摘要：The short- and long-term toxic effects of Pb(II) exposure on Chlorella vulgaris (C. vulgaris) and Chlorella protothecoides (C. protothecoides) were not well understood. The lab study was performed to observe the Pb(II) exposure induced changes. Results of the observations show: (1) higher level of Pb (II) (50 or 80 mg L-1) could significantly inhibit the growth and chlorophyll a synthesis of both algae in almost all the treatments and dose-response relationships could be clearly observed, (2) the range of EC50 values (24-120 h, 67.73-172.45 mg L-1) indicated that Pb(II) had a relatively limited short-term toxicity to the two algae, while long-term tests (7-28 d, 50.41-63.91 mg L-1) displayed higher toxicity and (3) SOD and CAT activities of both algae after exposed to medium level of Pb(II) were significantly promoted, and their response might be more susceptible in short-term exposure. This research provides a basic understanding of Pb(II) toxicity to aquatic organisms. (C) 2013 Elsevier B.V. All rights reserved.