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From compost-amended soil to plant tissues: field quantification of environmentally relevant polystyrene nanoplastics and limited translocation in Holcus lanatus L.
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Scientists tested real farm soil treated with compost and found tiny plastic particles (nanoplastics) mostly stayed stuck in grass roots rather than moving up into the parts we'd eat. This is reassuring news, though more research is needed to confirm how well this applies to food crops and whether any plastic still ends up on our plates.
dry weight). Shoot concentrations were above the detection limit but close to the quantification threshold. The resulting root-to-shoot translocation factor (TF ≈ 0.26), interpreted as a conservative semi-quantitative estimate because shoot concentrations were below the LOQ, was consistent with limited transfer between plant compartments and a root-dominated distribution pattern under field conditions. This pattern contrasts with studies using pristine monodisperse nanobeads, which reported greater mobility, highlighting the importance of particle realism when assessing NPs behavior in terrestrial environments. Overall, our findings provide field-based evidence for the presence and distribution of environmentally derived eNPs-PS in a soil-plant system under chronic exposure conditions. The qualitative consistency between field observations and previous laboratory studies using environmentally relevant nanoplastics (eNPs) provides a useful link between controlled and field investigations, while emphasizing the importance of environmentally aged and heterogeneous particles when assessing nanoplastic behavior under realistic environmental conditions.
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Micro/Nanoplastics in Agriculture: Uptake, Translocation and Bioaccumulation in Plants and Their Ecological Implications
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Tiny plastic particles from pollution are building up in farm soils and getting absorbed by plants through their roots, then traveling up into the leaves, fruits, and other parts we eat. This review of existing research shows these plastics can interfere with how plants grow and take up nutrients, and their presence in edible crops raises real concerns about how much plastic might be ending up on our dinner plates. Scientists still need better, standardized tools to detect these particles and develop ways to keep them out of our food supply.
Quantification of nanoplastic uptake and distribution in the root, stem and leaves of the edible herb Lepidum sativum
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Scientists confirmed that 100-nanometer polystyrene nanoplastics can be absorbed by the roots of the edible herb garden cress and travel up through the stem into the leaves. At high concentrations, the nanoplastics significantly reduced germination, plant weight, and root growth, though environmentally realistic levels did not cause visible harm. This finding raises food safety concerns because nanoplastics in agricultural soil could end up in the edible parts of plants that people consume.
[Effect of Organic Fertilizers on the Accumulation and Distribution of Polystyrene Nanoplastics in Cotton Plants].
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This pot experiment found that cotton plants absorb polystyrene nanoplastics through their roots and transport them into stems, but adding organic fertilizer reduced the amount transferred upward, with most nanoplastics retained in roots. While nanoplastics alone reduced plant growth indicators, organic fertilizer partially offset these negative effects. The results suggest that organic soil amendments could help reduce the uptake and spread of nanoplastics in food crops, which has implications for agricultural food safety.
Nanoplastics are taken up by lettuce and barley under realistic soil condition
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Scientists found that tiny plastic particles called nanoplastics can be absorbed by lettuce and barley plants when grown in soil, even at low pollution levels similar to what's found in the environment. The plastic particles accumulated in the parts of the plants that people eat, showing a new way these pollutants could enter our food supply. While the amounts were small, this research reveals that nanoplastics from pollution can travel from soil into our crops, which could eventually affect human health.
Micro- and Nanoplastics in Agricultural Crop Systems: From Environmental Particles to Plant Phenotypes and Food-System Relevance
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Tiny plastic particles from mulch films, compost, and irrigation water are building up in farm soils, and this review pulls together existing research on how they affect crops—from stressing plant cells to potentially moving into the parts we eat. The evidence that plastics can travel from soil into food is growing but still incomplete, so scientists say more realistic farm-based studies are needed before we know exactly how much this matters for what ends up on our plates.
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