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Polystyrene nano- and microplastic accumulation at Arabidopsis and wheat root cap cells, but no evidence for uptake into roots
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Researchers investigated whether polystyrene nano- and microplastics can be taken up by the roots of Arabidopsis and wheat plants. They found that plastic particles accumulated at root cap cells on the outer surface of roots but found no evidence that the particles were actually taken up into root tissues. The study suggests that while plastic particles associate with plant roots, they may not easily enter the plant itself through this pathway.
Association of plastic particles with plant roots could represent a pathway for human consumption of plastic and plastic-associated organic contaminants.
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Uptake of polystyrene nanospheres by wheat and Arabidopsis roots in agar, hydroponics, and soil
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Researchers studied the uptake of polystyrene nanoplastic particles by wheat and Arabidopsis roots across three growing systems: agar, hydroponics, and soil. The study found that plant roots can absorb nanoplastic particles, raising concerns about food chain contamination. The findings suggest that nanoplastics in agricultural soils may enter food crops and ultimately reach human consumers.
Polymer nanoparticles pass the plant interface
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Researchers created well-defined fluorescent polymer nanoparticles and tracked their uptake into the roots and cells of Arabidopsis plants using microscopy. They found that smaller nanoparticles were taken up more efficiently than larger ones, with particles entering through the root system. The study provides direct evidence that nanoplastics can cross plant cell barriers, which has implications for understanding how plastic pollution may enter the food chain through crops.
Polystyrene microplastic interaction with Oryza sativa: toxicity and metabolic mechanism
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Researchers confirmed for the first time that polystyrene nanoplastics can enter rice plant root cells through a process called endocytosis. This finding provides important new understanding of how microplastic contamination in soil may affect crop plants and potentially enter the food supply.
Uptake and distribution of microplastics of different particle sizes in maize (Zea mays) seedling roots
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Researchers studied how maize seedling roots take up polystyrene microplastic beads of different sizes and found that smaller particles were absorbed more readily than larger ones. Particles as small as 0.2 micrometers were detected in both roots and shoots, with the root tip being the primary uptake zone. The findings confirm that microplastics can enter food crops through their root systems, raising questions about food safety.
Accumulation of nanoplastics by wheat seedling roots: Both passive and energy-consuming processes
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This study investigated how wheat seedling roots absorb and transport polystyrene and PVC nanoplastics, finding that uptake occurred through both passive (energy-independent) and active (energy-consuming) processes. Root uptake efficiency varied by particle type and size, with implications for nanoplastic entry into the food chain via crop plants.
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