Cumulative effect of low and high atrazine concentrations on Arabidopsis thaliana plants

Cumulative effect of low and high atrazine concentrations on Arabidopsis thaliana plants Atrazine belongs to the widely used herbicides blocking the electron transport chain in chloroplasts, thus resulting in the generation of active oxygen species. In the present work, we demonstrated that, at low concentrations mimicking residual amounts, atrazine enhanced the susceptibility of Arabidopsis plants to further treatments with the same herbicide applied at the recommended field rate. Arabidopsis thaliana plants were treated three times (at five-day intervals) with 1 µM atrazine. Five days after the last treatment, the plants were sprayed with 5 mM atrazine. Atrazine increased the levels of lipid peroxidation products, hydrogen peroxide, and ion leakage, and caused changes in the activities of antioxidant enzymes, such as superoxide dismutase, guaiacol peroxidase, and catalase. Russian Journal of Plant Physiology Springer Journals

Cumulative effect of low and high atrazine concentrations on Arabidopsis thaliana plants

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Copyright © 2005 by MAIK “Nauka/Interperiodica”
Life Sciences; Plant Sciences; Plant Physiology
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