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Visual Trackingand Quantitative Analysis of PolystyreneNanoplastics Uptake and Transport across Various Tomato Varieties
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Researchers tracked uptake and transport of polystyrene nanoplastics across six tomato cultivars, finding significant varietal differences in accumulation and growth inhibition, with Heinz 1706 being most resistant (13% inhibition) and Moneymaker most sensitive (32% inhibition). Nanoplastics accumulated preferentially in roots and near the xylem in stems and leaves, with shoot concentrations substantially lower than root concentrations.
The mechanisms by which plants respond to microplastic pollution are still unclear. To identify resistant varieties for elucidating these mechanisms, this study investigated the differential accumulation and resistance of six tomato cultivars to polystyrene nanoplastics (PS-NPs). Significant varietal differences were observed. Heinz 1706 was the most resistant (13% growth inhibition), while Moneymaker was the most sensitive (32% inhibition). PS-NPs content was significantly lower in shoots than in roots. In stems and leaves, PS-NPs accumulated near the xylem, whereas in roots, they were distributed across all tissues. Translocation factors (TF) also varied, with Ailsa Craig having the highest TF (4.0%) and M82 having the lowest TF (0.89%). Correlation analysis revealed a strong negative relationship between root PS-NPs accumulation and plant growth. These findings provided key insights into microplastic accumulation and resistance factors in plants, forming the foundation for future molecular and physiological studies.
More Papers Like This
Visual Tracking and Quantitative Analysis of Polystyrene Nanoplastics Uptake and Transport across Various Tomato Varieties
AI summary Read the abstract
Researchers tracked the uptake and transport of polystyrene nanoplastics across six tomato cultivars, finding significant varietal differences in accumulation and growth inhibition, with Heinz 1706 being most resistant (13% inhibition) and Moneymaker most sensitive (32% inhibition). Nanoplastics accumulated preferentially in roots and near the xylem in stems and leaves, with shoot concentrations substantially lower than root concentrations.
Absorption, accumulation, physiological responses, and mechanistic insights into tomato (Solanum lycopersicum L.) to polystyrene microplastics
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Tomato plants grown with polystyrene microplastics absorbed the particles through their roots and moved them into stems and leaves, with smaller particles and higher amounts building up more. Exposure reduced root growth, plant height and weight, increased oxidative stress markers, and altered gene activity and chemical processes linked to plant hormones and cell membranes.
Uptake and translocation of nanoplastics in mono and dicot vegetables
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Researchers investigated the uptake and translocation of nanoplastics in four vegetable species -- pak choi, tomato, radish, and asparagus -- exposing plants to fluorescently labeled poly(methyl methacrylate) and polystyrene particles of 100 to 500 nm with different surface modifications, and using fluorescence microscopy to confirm nanoparticle entry and movement regardless of size or surface chemistry.
MICROPLÁSTICOS Y NANOPLÁSTICOS: UNA REVISIÓN SISTEMÁTICA DE SU IMPACTO EN EL CRECIMIENTO DE TOMATE (Solanum lycopersicum)
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This systematic review analysed published studies on the effects of synthetic microplastics and nanoplastics on tomato (Solanum lycopersicum) growth, examining how polymer type, particle size, concentration, and growth medium modulate phytotoxicity. The review found that MP and NP exposure consistently impaired biomass accumulation, plant height, flower and fruit production, and root and shoot length, with higher concentrations and smaller particle sizes generally producing the most pronounced negative effects.
Influence of polystyrene nanoplastics on the uptake and distribution of potentially toxic elements in tomato plants investigated using isotopic tracers
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Scientists grew tomato plants in water containing tiny plastic particles (nanoplastics) along with common contaminants like chromium, cadmium, lead, and zinc to see how the plastics affect what ends up in your food. They found that nanoplastics mostly stayed in the roots rather than traveling up to the fruit, and while they didn't change cadmium or zinc uptake, they actually reduced how much chromium and lead the plants absorbed. The bigger concern: tomatoes naturally accumulated notable levels of cadmium regardless of plastic exposure, which could pose health risks, especially for children, if ea
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