Assessment of the Potential Phytotoxicity of Chlorpyrifos in the Wetland Macrophyte Bidens laevis (L.)

• Published in: Bulletin of environmental contamination and toxicology 2024-10, Vol.113 (4), p.45, Article 45
• Main Authors: Lombardero, Lucas R., Truchet, Daniela M., Medici, Sandra K., Mendieta, Julieta R., Pérez, Débora J., Menone, Mirta L.
• Format: Article
• Language: English
• Subjects: Aquatic plants; Aquatic Pollution; Bidens - drug effects; Bidens laevis; Bioassays; Biomarkers; Carotenoids; Chlorpyrifos; Chlorpyrifos - toxicity; Content analysis; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Germination; Germination - drug effects; Insecticides - toxicity; Low concentrations; Macrophytes; Oxidative stress; Oxidative Stress - drug effects; Pesticides; Photosynthetic pigments; Phytotoxicity; Pigments; Pollution; Seedlings; Seedlings - drug effects; Seedlings - growth & development; Seeds; Soil Science & Conservation; Toxicity; Toxicology; Waste Water Technology; Water Management; Water Pollutants, Chemical - toxicity; Water Pollution Control; Wetlands
• ISSN: 0007-4861; 1432-0800; 1432-0800
• DOI: 10.1007/s00128-024-03957-z

Chlorpyrifos (CPF) has been used worldwide, but its possible negative effects on macrophytes have been scarcely studied. The main goal of the present work was to assess the potential phytotoxic effects of CPF on different stages (seed and seedling) of the wetland macrophyte Bidens laevis. During the germination of seeds, stimulation of radicle growth at low concentrations of CPF (10 µg/L) and inhibition of its elongation at 80 µg/L CPF were observed. In seedlings, concentrations ≤ 160 µg/L CPF did not exhibit adverse effects on growth after 7 days of exposure, despite the decrease of photosynthetic pigments and carotenoids observed at 40 µg/L CPF compared to the control. Environmentally relevant concentrations of CPF altered neither oxidative stress biomarkers nor pigment contents in seedlings exposed for 48 h, suggesting CPF would be non-toxic to B. laevis in natural scenarios.