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Role of zinc oxide nanoparticles on phytostabilization efficacy of Raphanus sativus for cadmium polluted soil under microplastic stress
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Soil contaminated with both cadmium (a toxic heavy metal) and microplastics stunts radish growth and makes plants more stressed — a real concern since we eat these crops. Researchers found that treating radish seeds with zinc oxide nanoparticles helped the plants grow better and absorb less cadmium into their tissues, even under this combined pollution. This suggests a simple seed treatment could one day help farmers grow safer, healthier produce in polluted soils, though more research is needed before it's used widely.
The accumulation of Cadmium (Cd) and microplastics (MPs) in agricultural soils poses a serious threat to plant growth, crop productivity, and food safety. This study investigates the combined effect of Cd and MPs on growth, antioxidant enzymes, and lipid peroxidation of Raphanus sativus, as well as the potential of Zinc oxide nanoparticles (ZnO NPs) in alleviating the combined Cd and MPs stress. Seeds were primed with different doses of ZnO NPs (40, 80, and 160 mg L−1). The findings depicted that MPs and Cd significantly reduced the growth attributes and photosynthetic pigments, while increasing the oxidative stress markers, biochemical content, and antioxidant activity in R. sativus. In contrast, ZnO NPs application improved growth attributes, photosynthetic efficiency, and antioxidant enzymes activity of R. sativus. Seed priming with ZnO NPs (160 mg L−1) showed significant improvement in growth and physiological attributes while reducing oxidative stress and Cd accumulation in radish plant tissues. These findings indicate that ZnO NPs application enhances plant tolerance to combined Cd and MP stress by improving the antioxidant defense system and reducing Cd uptake. Therefore, ZnO NPs seed priming represents a promising strategy for enhancing crop resilience and promoting sustainable agricultural practices in multi-contaminated soil.
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Researchers applied zinc oxide nanoparticles to rye plants exposed to PVC microplastics and mercury in soil, finding that ZnO-NPs mitigated some of the toxic effects by improving nutrient uptake and reducing oxidative stress. The study suggests nanoparticle-based approaches may help protect crops in microplastic- and heavy metal-contaminated soils.
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Researchers found that microplastics in soil increased the amount of cadmium, a toxic heavy metal, that mustard green plants absorbed, while also reducing crop yields and photosynthesis. Higher concentrations of microplastics made more cadmium available in the soil, leading to greater accumulation of the metal in the plants. This raises food safety concerns because vegetables grown in microplastic-contaminated soil could contain higher levels of toxic metals that are harmful to human health.
Zinc ions enhance tolerance to nanoplastics stress in rice seedlings: Advancing the development and optimization of traditional zinc fertilizers
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Researchers tested whether traditional zinc sulfate fertilizer could help rice seedlings tolerate polystyrene microplastic stress, as an alternative to zinc oxide nanoparticles which carry their own environmental risks. They found that appropriate zinc levels reduced oxidative damage through different mechanisms in shoots versus roots, restoring photosynthesis and development. The findings offer a practical, lower-risk strategy for protecting crops from microplastic contamination in agricultural soils.
The impact of arbuscular mycorrhizal fungi and endophytic bacteria on peanuts under the combined pollution of cadmium and microplastics
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Researchers tested whether beneficial soil fungi and bacteria could help peanut plants cope with combined contamination from cadmium and microplastics. They found that the microbial treatment effectively trapped cadmium in the plant roots, preventing it from moving into the shoots and edible parts. The study suggests that harnessing natural soil microbes could be a practical strategy for growing safer food in polluted farmland.
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