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Aged polyethylene microplastics modulate herbicide and antibiotic bioavailability and plant responses: a case study with glyphosate and tetracycline
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Researchers generated experimental data on how aged polyethylene microplastics affect the behavior of the herbicide glyphosate and the antibiotic tetracycline in hydroponic plant growth systems. The dataset includes measurements of pollutant sorption, plant photosynthetic pigments, and antioxidant enzyme activity in rapeseed plants exposed to various combinations of microplastics and chemicals. The study suggests that microplastics can modulate how other environmental contaminants interact with plants.
The dataset contains raw and processed results obtained during hydroponic exposure experiments with Brassica napus L., conducted to assess the effects of aged polyethylene microplastics (MP PE) and co-occurring xenobiotics (tetracycline and [C₁₂TMA][Glyph]) on plant physiology, biochemical stress responses, and pollutant sorption behavior.The dataset consists exclusively of Excel (XLSX) files containing primary experimental measurements used for statistical analysis and data visualization. The files are organized according to analytical endpoints, as outlined below:Sorption experimentsHydroponic_sorption_Tetracycline.xlsx – concentrations of tetracycline in hydroponic medium over time (0 h, 1 h, 1 day, 7 days, 10 days) in systems with and without microplastics.Hydroponic_sorption_ILs.xlsx – concentrations of the ionic liquid [C₁₂TMA][Glyph] in hydroponic medium over time under analogous experimental conditions.Photosynthetic pigmentsHydroponic_chlorophyll.xlsx – chlorophyll a, chlorophyll b, and carotenoid contents in shoots of Brassica napus exposed to different treatments (control, microplastics, xenobiotics, humic acids, and their mixtures), used to calculate pigment ratios.Antioxidant enzymes and stress markersHydroponic_enzymes_CAT.xlsx – catalase (CAT) activity.Hydroponic_enzymes_APx.xlsx – ascorbate peroxidase (APx) activity.Hydroponic_enzymes_GST.xlsx – glutathione S-transferase (GST) activity.Hydroponic_enzymes_POx.xlsx – peroxidase (POx) activity.Hydroponic_enzymes_TBARS.xlsx – TBARS values representing lipid peroxidation and membrane damage.Secondary metabolites and osmotic stress indicatorsHydroponic_phenolic_compounds.xlsx – total phenolic content (TPC) in roots and shoots.Hydroponic_proline_content.xlsx – proline content as an indicator of osmotic and oxidative stress.Hydroponic_protein_content.xlsx – total soluble protein content in plant tissues.Toxicity screeningHydroponic_EC50.xlsx – EC₅₀ values derived from preliminary toxicity assays for tetracycline and [C₁₂TMA][Glyph], based on root and shoot length inhibition.
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Aged polyethylene microplastics modulate herbicide and antibiotic bioavailability and plant responses: A case study with glyphosate and tetracycline
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Scientists found that tiny plastic particles commonly found in farm soil can stick to plant roots and change how plants absorb harmful chemicals like pesticides and antibiotics. The plastic pieces made plants more stressed and damaged, reducing important nutrients like chlorophyll by 30%. This matters because it could affect the safety and quality of the food we eat, since these plastic particles are becoming more common in agricultural areas where our crops are grown.
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Researchers studied how aged and pristine polyethylene microplastics adsorb the herbicide atrazine and whether this combination affects plant seed germination. Aged microplastics absorbed significantly more atrazine than new ones due to surface changes from UV exposure, and the atrazine-loaded aged particles inhibited lettuce germination by up to 34%. The findings suggest that weathered microplastics in agricultural environments may amplify the harmful effects of pesticide contamination.
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Researchers exposed the plants Arabidopsis thaliana and Phaseolus vulgaris to polyethylene microplastics at different concentrations and found effects on plant growth and soil microbial communities. The study contributes to a limited but growing body of evidence on how microplastic pollution in agricultural soils may affect crop plants and soil health.
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Researchers studied the sorption of atrazine onto new and aged polyethylene microplastics in distilled and nutrient-enriched (eutrophic) water, then assessed the phytotoxic effects on Lactuca sativa germination. Aged MPs adsorbed more atrazine than new MPs, and the combination increased phytotoxicity over atrazine alone, showing that weathered microplastics amplify herbicide risks in aquatic environments.
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