Polystyrene Nanoplastics Impact Cadmium Uptake and Toxicity in Arabidopsis Thaliana

Physiological and Biochemical Effects of Polystyrene Micro/Nano Plastics on Arabidopsis Thaliana

Microplastic modulates cadmium toxicity in duckweed: Insights into metal uptakes and oxidative stress in the plant

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Researchers found that microplastics in water reduced duckweed's uptake of toxic cadmium by adsorbing the metal onto plastic fibers and causing it to settle into sediments rather than enter plants. While this may seem protective, it highlights a troubling dual role: microplastics can redistribute heavy metals through aquatic systems in ways that affect long-term contamination patterns.

Polystyrene nanoplastics distinctly impact cadmium uptake and toxicity in Arabidopsis thaliana

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In a study using the model plant Arabidopsis, polystyrene nanoplastics increased the uptake and accumulation of the toxic heavy metal cadmium in plant roots. The combined stress of nanoplastics and cadmium caused worse oxidative damage and growth problems than either pollutant alone. This is concerning because it means microplastics in agricultural soil could help toxic metals get into crops more easily, potentially increasing human exposure through food.

Combined Effects of Polystyrene Nanoparticles and Cadmium on Freshwater Submerged Macrophyte Vallisneria natans: Bioaccumulation, Chlorophyll Content, and Oxidative Stress

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Researchers exposed the freshwater macrophyte Vallisneria natans to polystyrene nanoparticles and cadmium individually and in combination, finding that co-exposure dramatically increased cadmium accumulation, elevated oxidative damage markers, and suppressed antioxidant enzyme activity compared to single-pollutant exposures.

Co-exposure to Cadmium and Polystyrene Nanoplastics Intensifies Renal Damage in Mice via the Activation of the PANoptosis Pathway

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Researchers exposed mice to cadmium and polystyrene nanoplastics individually and together, finding that co-exposure synergistically worsened kidney damage by activating PANoptosis — a coordinated cell death cascade integrating pyroptosis, apoptosis, and necroptosis — with the scaffold protein ASC markedly upregulated as a central driver.