Antioxidant and biotransformation enzymes in Myriophyllum quitense as biomarkers of heavy metal exposure and eutrophication in Suquía River basin (Córdoba, Argentina).

NIPTSCH, J.; WUNDERLIN, D. A.; DOLLAN, A.; PFLUGMACHER, S.

CHEMOSPHERE

ELSEVIER

Año: 2005 vol. 61 p. 147 - 157

0045-6535

We report the evaluation of changes in water quality, increasing pollution level, of a section of Suquý´a River basin (Co´rdoba, Argentina) by using Myriophyllum quitense as bioindicator in addition to the measurement of chemical parameters, combined with chemometrics (ANOVA, Cluster and Discriminant Analysis).Myriophyllum quitense as bioindicator in addition to the measurement of chemical parameters, combined with chemometrics (ANOVA, Cluster and Discriminant Analysis). Myriophyllum quitense was collected upstream from Co´rdoba city at an unpolluted site of Suquý´a River basin. After collection plants were transplanted to di.erent sites with di.erent pollution levels. Subsequent to transplantation plants were weekly collected from the original site as well as from transplantation stations. Water quality was evaluated throughout the transplantation experiment, while the use of this macrophyte as bioindicator was veri.ed through the activation of its antioxidant defenses and biotransformation system. Myriophyllum quitense reacts to the pollution stress increasingthe activity of glutathione-S-transferases (CDNB and Fluorodifen), glutathione reductase (GR) and peroxidase (POD). Elevated enzyme activities agreed to di.erent pollution levels, especially inorganic nitrogen loads combined with elevated lead and aluminum concentrations, all of them originated by anthropogenic activities, thus presenting Myriophyllum quitense as a good biomonitor for assessment of water quality in this polluted aquatic ecosystem.was collected upstream from Co´rdoba city at an unpolluted site of Suquý´a River basin. After collection plants were transplanted to di.erent sites with di.erent pollution levels. Subsequent to transplantation plants were weekly collected from the original site as well as from transplantation stations. Water quality was evaluated throughout the transplantation experiment, while the use of this macrophyte as bioindicator was veri.ed through the activation of its antioxidant defenses and biotransformation system. Myriophyllum quitense reacts to the pollution stress increasingthe activity of glutathione-S-transferases (CDNB and Fluorodifen), glutathione reductase (GR) and peroxidase (POD). Elevated enzyme activities agreed to di.erent pollution levels, especially inorganic nitrogen loads combined with elevated lead and aluminum concentrations, all of them originated by anthropogenic activities, thus presenting Myriophyllum quitense as a good biomonitor for assessment of water quality in this polluted aquatic ecosystem.Myriophyllum quitense reacts to the pollution stress increasingthe activity of glutathione-S-transferases (CDNB and Fluorodifen), glutathione reductase (GR) and peroxidase (POD). Elevated enzyme activities agreed to di.erent pollution levels, especially inorganic nitrogen loads combined with elevated lead and aluminum concentrations, all of them originated by anthropogenic activities, thus presenting Myriophyllum quitense as a good biomonitor for assessment of water quality in this polluted aquatic ecosystem.reacts to the pollution stress increasingthe activity of glutathione-S-transferases (CDNB and Fluorodifen), glutathione reductase (GR) and peroxidase (POD). Elevated enzyme activities agreed to di.erent pollution levels, especially inorganic nitrogen loads combined with elevated lead and aluminum concentrations, all of them originated by anthropogenic activities, thus presenting Myriophyllum quitense as a good biomonitor for assessment of water quality in this polluted aquatic ecosystem.Myriophyllum quitense as a good biomonitor for assessment of water quality in this polluted aquatic ecosystem.