Abstract
Clopyralid is one of the synthetic pyridine-carboxylate auxin herbicides and used to control perennial and annual broadleaf weeds in wheat, sugar beets, canola, etc. In this study, dose-dependent cytotoxicity and genotoxicity of clopyralid at different concentrations (25, 50, and 100 μg/mL) have been evaluated on the Allium cepa roots. The evaluation has been performed at macroscopic (root growth) and microscopic levels [mitotic index (MI), chromosome aberrations (CAs) in ana-telophase cells, and DNA damage] using root growth inhibition, Allium ana-telophase, and comet tests. The percentage of root growth inhibition and concentration of reducing root growth by 50% (EC50) of clopyralid were determined compared with the negative control by using various concentrations of clopyralid (6.25–1000 μg/L). The 96 h EC50 of clopyralid was recorded as 50 μg/L. The gradual decrease in root growth and the MI reveals the cytotoxic effects of clopyralid. All the tested concentrations of clopyralid induced total CAs (polyploidy, stickiness, anaphase bridges, chromosome laggards, and disturbed ana-telophase) and DNA damage dose and time dependently. These results confirm the cytotoxic and genotoxic effects of clopyralid on non-target organism.
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The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.
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Amaç, E., Liman, R. Cytotoxic and genotoxic effects of clopyralid herbicide on Allium cepa roots. Environ Sci Pollut Res 28, 48450–48458 (2021). https://doi.org/10.1007/s11356-021-13994-4
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DOI: https://doi.org/10.1007/s11356-021-13994-4