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Physiological response of freshwater microalga (Chlorella vulgaris) to triazine and phenylurea herbicides.
Aquat Toxicol. 2002 Sep 24; 59(3-4):225-35.AT

Abstract

The effects of two herbicides used wide-spread, isoproturon (phenylurea) and terbutryn (triazine), on growth, dry weight, elemental composition, photosynthetic pigments and protein content, and cell volume assayed by flow cytometry in the freshwater microalgae Chlorella vulgaris were studied. Different parameters for algal activity show widely different sensitivities to these aquatic pollutants. After 96 h of herbicide exposure, terbutryn was the strongest inhibitor of growth, giving an EC50 value for growth twice lower than that for isoproturon cultures (EC50 terbutryn=0.097 microM; EC50 isoproturon=0.199 microM). However, lower concentrations of the triazine herbicide provoked an increase in the cellular density and growth rate of this microalga, not observed in the phenylurea-treated cultures. Cellular volume and dry weight of C. vulgaris cells were increased strongly in the presence of isoproturon and terbutryn. Other cellular parameters, such as pigment and protein content, were stimulated with both herbicides at higher concentrations.

Authors+Show Affiliations

Rioboo C
Laboratorio de Microbioloxía, Facultad de Ciencias, Universidade da Coruña, Rúa Alejandro de la Sota no. 1, 15008 A Coruña, Spain.
González O
No affiliation info available
Herrero C
No affiliation info available
Cid A
No affiliation info available

MeSH

Adaptation, PhysiologicalChlorellaDose-Response Relationship, DrugFlow CytometryHerbicidesPhenylurea CompoundsPhotosynthesisPigments, BiologicalTime FactorsTriazines

Pub Type(s)

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

Language

eng

PubMed ID

12127739

Citation

Rioboo, C, et al. "Physiological Response of Freshwater Microalga (Chlorella Vulgaris) to Triazine and Phenylurea Herbicides." Aquatic Toxicology (Amsterdam, Netherlands), vol. 59, no. 3-4, 2002, pp. 225-35.
Rioboo C, González O, Herrero C, et al. Physiological response of freshwater microalga (Chlorella vulgaris) to triazine and phenylurea herbicides. Aquat Toxicol. 2002;59(3-4):225-35.
Rioboo, C., González, O., Herrero, C., & Cid, A. (2002). Physiological response of freshwater microalga (Chlorella vulgaris) to triazine and phenylurea herbicides. Aquatic Toxicology (Amsterdam, Netherlands), 59(3-4), 225-35.
Rioboo C, et al. Physiological Response of Freshwater Microalga (Chlorella Vulgaris) to Triazine and Phenylurea Herbicides. Aquat Toxicol. 2002 Sep 24;59(3-4):225-35. PubMed PMID: 12127739.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physiological response of freshwater microalga (Chlorella vulgaris) to triazine and phenylurea herbicides. AU - Rioboo,C, AU - González,O, AU - Herrero,C, AU - Cid,A, PY - 2002/7/20/pubmed PY - 2002/12/10/medline PY - 2002/7/20/entrez SP - 225 EP - 35 JF - Aquatic toxicology (Amsterdam, Netherlands) JO - Aquat Toxicol VL - 59 IS - 3-4 N2 - The effects of two herbicides used wide-spread, isoproturon (phenylurea) and terbutryn (triazine), on growth, dry weight, elemental composition, photosynthetic pigments and protein content, and cell volume assayed by flow cytometry in the freshwater microalgae Chlorella vulgaris were studied. Different parameters for algal activity show widely different sensitivities to these aquatic pollutants. After 96 h of herbicide exposure, terbutryn was the strongest inhibitor of growth, giving an EC50 value for growth twice lower than that for isoproturon cultures (EC50 terbutryn=0.097 microM; EC50 isoproturon=0.199 microM). However, lower concentrations of the triazine herbicide provoked an increase in the cellular density and growth rate of this microalga, not observed in the phenylurea-treated cultures. Cellular volume and dry weight of C. vulgaris cells were increased strongly in the presence of isoproturon and terbutryn. Other cellular parameters, such as pigment and protein content, were stimulated with both herbicides at higher concentrations. SN - 0166-445X UR - https://www.unboundmedicine.com/medline/citation/12127739/Physiological_response_of_freshwater_microalga__Chlorella_vulgaris__to_triazine_and_phenylurea_herbicides_ DB - PRIME DP - Unbound Medicine ER -