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Temporal changes in the toxicity of pentachlorophenol to Chlorella pyrenidosa algae.
J Environ Sci Health B. 2003 Sep; 38(5):551-9.JE

Abstract

The toxicity of pentachlorophenol (PCP) on Chlorella pyrenidosa algae was investigated with specific attention given to possible variation of toxic effects with time. A concentration-effect relationship was observed in which there was significant inhibition of PCP on cell density and chlorophyll A content. The inhibition rate of PCP on cell density was dependent on exposure time. The IC50 values after exposure times of 2, 4 and 6 days for cell growth were 4.18 +/- 0.49, 3.49 +/- 0.40 and 3.30 +/- 0.26 mg/L, respectively. There was also inhibition of chlorophyll A production, which appeared to increase marginally with exposure time for a given concentration of PCP. The corresponding IC50 values on day 2, 4 and 6 were 2.30 +/- 0.12, 2.63 +/- 0.38 and 3.30 +/- 0.34 mg/L, respectively. The effect of PCP on nitrate reductase (NR), was first stimulation followed by an inhibition phase. It is postulated that the observed temporal changes in the activity of nitrate reductase (NR) may occur through the addition or loss of phosphorus in the NR protein.

Authors+Show Affiliations

Huang GL
College of Environmental Science and Engineering, Nankai University, Tianjin, China.
Mao Y
No affiliation info available
Headley JV
No affiliation info available
Sun HW
No affiliation info available

MeSH

BiomassChlorellaChlorophyllChlorophyll ADose-Response Relationship, DrugEnzyme InhibitorsInhibitory Concentration 50Nitrate ReductaseNitrate ReductasesPentachlorophenolPesticidesTime FactorsWater Pollutants, Chemical

Pub Type(s)

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

Language

eng

PubMed ID

12929714

Citation

Huang, Guo-Lan, et al. "Temporal Changes in the Toxicity of Pentachlorophenol to Chlorella Pyrenidosa Algae." Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes, vol. 38, no. 5, 2003, pp. 551-9.
Huang GL, Mao Y, Headley JV, et al. Temporal changes in the toxicity of pentachlorophenol to Chlorella pyrenidosa algae. J Environ Sci Health B. 2003;38(5):551-9.
Huang, G. L., Mao, Y., Headley, J. V., & Sun, H. W. (2003). Temporal changes in the toxicity of pentachlorophenol to Chlorella pyrenidosa algae. Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes, 38(5), 551-9.
Huang GL, et al. Temporal Changes in the Toxicity of Pentachlorophenol to Chlorella Pyrenidosa Algae. J Environ Sci Health B. 2003;38(5):551-9. PubMed PMID: 12929714.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Temporal changes in the toxicity of pentachlorophenol to Chlorella pyrenidosa algae. AU - Huang,Guo-Lan, AU - Mao,Yuxiang, AU - Headley,John V, AU - Sun,Hong-Wen, PY - 2003/8/22/pubmed PY - 2003/12/24/medline PY - 2003/8/22/entrez SP - 551 EP - 9 JF - Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes JO - J Environ Sci Health B VL - 38 IS - 5 N2 - The toxicity of pentachlorophenol (PCP) on Chlorella pyrenidosa algae was investigated with specific attention given to possible variation of toxic effects with time. A concentration-effect relationship was observed in which there was significant inhibition of PCP on cell density and chlorophyll A content. The inhibition rate of PCP on cell density was dependent on exposure time. The IC50 values after exposure times of 2, 4 and 6 days for cell growth were 4.18 +/- 0.49, 3.49 +/- 0.40 and 3.30 +/- 0.26 mg/L, respectively. There was also inhibition of chlorophyll A production, which appeared to increase marginally with exposure time for a given concentration of PCP. The corresponding IC50 values on day 2, 4 and 6 were 2.30 +/- 0.12, 2.63 +/- 0.38 and 3.30 +/- 0.34 mg/L, respectively. The effect of PCP on nitrate reductase (NR), was first stimulation followed by an inhibition phase. It is postulated that the observed temporal changes in the activity of nitrate reductase (NR) may occur through the addition or loss of phosphorus in the NR protein. SN - 0360-1234 UR - https://www.unboundmedicine.com/medline/citation/12929714/Temporal_changes_in_the_toxicity_of_pentachlorophenol_to_Chlorella_pyrenidosa_algae_ DB - PRIME DP - Unbound Medicine ER -