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The combined and second exposure effect of copper (II) and chlortetracycline on fresh water algae, Chlorella pyrenoidosa and Microcystis aeruginosa.
Environ Toxicol Pharmacol. 2015 Jul; 40(1):140-8.ET

Abstract

In the experiment, Chlorella pyrenoidosa and Microcystis aeruginosa were chosen to test the individual, combined and second exposure effect of Cu(2+) and chlortetracycline (CTC). The 96 h EC50s of each test were calculated, with the ranges of 0.972-15.6 μmol/L (Cu(2+)), 29.5-102.5 μmol/L (CTC), 14.4-78.9 μmol/L (mixture). The combined toxicities were evaluated with toxicity units (TU) method. The toxicity of complex of Cu(2+) and chlortetracycline was analyzed using concentration addition (CA) model. In the initial test, the combined effect of the two substances was partly additive to C. pyrenoidosa and antagonistic to M. aeruginosa, while in the second exposure test, the combined effect was synergistic to both algae. The biochemical indicators measured in the experiment included chlorophyll fluorescence (Fv/Fm), MDA content, SOD activity and content of soluble proteins. When under combined stress, the biochemical features of both algae were significantly different between the initial test and the second exposure test.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Lu L
College of Resource and Environmental Science, Wuhan University, Wuhan, PR China.
Wu Y
College of Resource and Environmental Science, Wuhan University, Wuhan, PR China.
Ding H
College of Resource and Environmental Science, Wuhan University, Wuhan, PR China.
Zhang W
College of Resource and Environmental Science, Wuhan University, Wuhan, PR China. Electronic address: zhangwh@whu.edu.cn.

MeSH

ChlorellaChlortetracyclineCopperFresh WaterMicrocystisSpecies Specificity

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26119232

Citation

Lu, Lei, et al. "The Combined and Second Exposure Effect of Copper (II) and Chlortetracycline On Fresh Water Algae, Chlorella Pyrenoidosa and Microcystis Aeruginosa." Environmental Toxicology and Pharmacology, vol. 40, no. 1, 2015, pp. 140-8.
Lu L, Wu Y, Ding H, et al. The combined and second exposure effect of copper (II) and chlortetracycline on fresh water algae, Chlorella pyrenoidosa and Microcystis aeruginosa. Environ Toxicol Pharmacol. 2015;40(1):140-8.
Lu, L., Wu, Y., Ding, H., & Zhang, W. (2015). The combined and second exposure effect of copper (II) and chlortetracycline on fresh water algae, Chlorella pyrenoidosa and Microcystis aeruginosa. Environmental Toxicology and Pharmacology, 40(1), 140-8. https://doi.org/10.1016/j.etap.2015.06.006
Lu L, et al. The Combined and Second Exposure Effect of Copper (II) and Chlortetracycline On Fresh Water Algae, Chlorella Pyrenoidosa and Microcystis Aeruginosa. Environ Toxicol Pharmacol. 2015;40(1):140-8. PubMed PMID: 26119232.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The combined and second exposure effect of copper (II) and chlortetracycline on fresh water algae, Chlorella pyrenoidosa and Microcystis aeruginosa. AU - Lu,Lei, AU - Wu,Yixiao, AU - Ding,Huijun, AU - Zhang,Weihao, Y1 - 2015/06/06/ PY - 2015/03/12/received PY - 2015/06/03/accepted PY - 2015/6/30/entrez PY - 2015/6/30/pubmed PY - 2016/6/9/medline KW - Chlorella pyrenoidosa KW - Chlortetracycline KW - Copper KW - Microcystis aeruginosa KW - Second exposure SP - 140 EP - 8 JF - Environmental toxicology and pharmacology JO - Environ Toxicol Pharmacol VL - 40 IS - 1 N2 - In the experiment, Chlorella pyrenoidosa and Microcystis aeruginosa were chosen to test the individual, combined and second exposure effect of Cu(2+) and chlortetracycline (CTC). The 96 h EC50s of each test were calculated, with the ranges of 0.972-15.6 μmol/L (Cu(2+)), 29.5-102.5 μmol/L (CTC), 14.4-78.9 μmol/L (mixture). The combined toxicities were evaluated with toxicity units (TU) method. The toxicity of complex of Cu(2+) and chlortetracycline was analyzed using concentration addition (CA) model. In the initial test, the combined effect of the two substances was partly additive to C. pyrenoidosa and antagonistic to M. aeruginosa, while in the second exposure test, the combined effect was synergistic to both algae. The biochemical indicators measured in the experiment included chlorophyll fluorescence (Fv/Fm), MDA content, SOD activity and content of soluble proteins. When under combined stress, the biochemical features of both algae were significantly different between the initial test and the second exposure test. SN - 1872-7077 UR - https://www.unboundmedicine.com/medline/citation/26119232/The_combined_and_second_exposure_effect_of_copper__II__and_chlortetracycline_on_fresh_water_algae_Chlorella_pyrenoidosa_and_Microcystis_aeruginosa_ DB - PRIME DP - Unbound Medicine ER -