Grafting-induced restriction of nanoplastic translocation and enhanced antioxidant resilience mitigate polystyrene nanoplastic toxicity in cucumber

From soil to shoot plant responses to polystyrene nanoplastics and relevance for sustainable food systems

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Tiny plastic particles from broken-down polystyrene (a common plastic) can be absorbed by plant roots and leaves, sometimes building up in the parts we actually eat, like grains and leafy greens. This review of existing research found that some crops (rice, lettuce, garlic) are harmed by these plastics, showing stress and stunted growth, while others (wheat) seem more resistant, meaning the risk to our food supply likely depends on what we're growing. The bottom line: we need better testing methods to understand how much of this plastic is ending up on our plates and what that means for our health.

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

Micro- and Nanoplastics on Plant Functionalities

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Researchers reviewed how micro- and nanoplastics affect plant physiology and function — including germination, root growth, photosynthesis, and nutrient uptake — across a range of crop and wild plant species. Plant uptake of plastic particles is a key mechanism by which microplastic contamination moves from soil into the human food supply, making these effects central to understanding dietary exposure risks.

Effective uptake of submicrometre plastics by crop plants via a crack-entry mode

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Submicrometre plastic particles from treated wastewater penetrate crop plants like wheat and lettuce through natural cracks at lateral root emergence sites, then travel from roots to shoots via transpiration. This confirms that microplastic-contaminated irrigation water can directly introduce plastics into the edible portions of food crops, raising urgent food safety concerns.

Cellular Uptake and Nuclear Accumulation of Polystyrene Nanoplastics in 3T3 Fibroblasts and Hepatocytes of Rattus norvegicus

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Scientists found that tiny plastic particles called nanoplastics can get inside liver and connective tissue cells from rats, and even sneak into the cell's nucleus, where DNA is stored. Cells exposed to these plastics showed signs of stress and damage, including swelling and higher rates of cell death, suggesting these ultra-small plastic particles may be more harmful than previously thought. While this study used animal cells rather than human cells, it raises important questions about what everyday exposure to nanoplastics (found in food packaging, water, and other sources) might mean for our own cellular health.