Nanoplastics Enter Edible Plant Tissues

UK researchers found polystyrene nanoplastics crossed the Casparian strip in radish roots and accumulated in edible tissues under a hydroponic test. About 5% of particles entered roots in five days, with a quarter of that amount in the fleshy root and a tenth reaching leaves. Although used concentrations were higher than typical soils and only one plastic/plant was tested, the result shows plants can internalize nano‑sized plastics. — If crops absorb nanoplastics, dietary exposure becomes a direct pathway, sharpening policy debates on plastic pollution, agricultural monitoring, and food safety standards.