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20 resultsShowing papers similar to Soil-applied polystyrene nanoplastics (PSNPs) remain cortically confined but trigger systemic oxidative and metabolic disruption in Zea mays L. seedlings
ClearPolystyrene nanoplastics affect seed germination, cell biology and physiology of rice seedlings in-short term treatments: Evidence of their internalization and translocation
Researchers found that polystyrene nanoplastics were absorbed by rice roots and translocated to shoots, impairing seed germination, seedling growth, and cell division while disrupting reactive oxygen species homeostasis in short-term treatments.
Effects of polystyrene nanoplastics (PSNPs) on the physiology and molecular metabolism of corn (Zea mays L.) seedlings
Researchers exposed corn seedlings to polystyrene nanoplastics of different sizes and measured effects on plant growth, photosynthesis, and molecular metabolism. They found that the nanoplastics accumulated in roots and disrupted antioxidant enzyme systems and metabolic pathways, though photosynthesis was relatively unaffected. The study suggests that nanoplastic contamination in agricultural soils could subtly impair crop development at the molecular level.
Toxic effects of polystyrene nanoplastics during transport and redistribution in distinct plant species: A combined split-root experiment and metabolomic analysis
Researchers used a split-root system to study how polystyrene nanoplastics travel through the root-shoot-root pathway and cause toxicity in cucumber and maize seedlings. The study found that nanoplastics inhibited growth in both exposed and unexposed roots, with cucumber showing greater sensitivity than maize, and metabolomic analysis revealed distinct disruptions in plant metabolism during nanoplastic transport and redistribution.
Response of rice (Oryza sativa L.) roots to nanoplastic treatment at seedling stage
Researchers exposed rice seedlings to polystyrene nanoplastics and found that the particles were taken up by the roots, aided by water-transporting proteins in the plant. The nanoplastics triggered oxidative stress, reduced root length, and disrupted carbon metabolism and hormone production in the seedlings. The study raises concerns that nanoplastic contamination in agricultural soils could affect crop growth and potentially enter the human food supply through rice consumption.
Response of soybean (Glycine max L.) seedlings to polystyrene nanoplastics: Physiological, biochemical, and molecular perspectives
Researchers examined the effects of polystyrene nanoplastics on soybean seedlings in a hydroponic experiment and confirmed that the nanoparticles were taken up by plant roots. The study found that nanoplastic exposure negatively affected growth, increased mineral content in roots and leaves, caused oxidative stress, and altered gene expression related to stress response and hormone signaling pathways.
Mechanistic insights into polystyrene nanoplastics (PSNPs) mediated imbalance of redox homeostasis and disruption of antioxidant defense system leading to oxidative stress in black mustard (Brassica nigra L.)
Researchers investigated how polystyrene nanoplastics affect black mustard seedlings and found that exposure led to reduced plant height, lower biomass, and damaged cell membranes. The nanoplastics disrupted the plants' antioxidant defense systems, causing an imbalance in their ability to manage oxidative stress. The study highlights that nanoplastic pollution in soil could pose a meaningful threat to crop growth and plant health.
Toxicological effects and molecular metabolic of polystyrene nanoplastics on soybean (Glycine max L.): Strengthening defense ability by enhancing secondary metabolisms
Researchers exposed soybean seedlings to polystyrene nanoplastics and found that the tiny particles were absorbed by the roots and transported throughout the plant. The nanoplastics caused oxidative stress and slowed growth, though the plants activated defense mechanisms through secondary metabolism. This is concerning because crops that absorb nanoplastics could transfer them to humans through the food supply.
Integrated physiological, metabolomic, and transcriptomic responses of maize (Zea mays) and soybean (Glycine max) to nanoplastic-induced stress
Researchers exposed maize and soybean crops to polyethylene and polypropylene nanoplastics in soil and found that high concentrations suppressed plant growth and caused oxidative stress in both species. The nanoplastics accumulated in plant roots and disrupted normal gene activity and metabolism, with soybeans being more sensitive than maize. These findings raise concerns about food crop quality and safety as nanoplastic contamination of agricultural soil increases.
Molecular mechanisms of toxicity and detoxification in rice (Oryza sativa L.) exposed to polystyrene nanoplastics
Researchers studied how polystyrene nanoplastics affect rice seedlings at the molecular level. They found that nanoplastic exposure significantly reduced root and shoot growth by over 50%, while triggering oxidative stress and activating genes related to both toxicity and defense responses. The study provides new insights into how crop plants respond to nanoplastic contamination at the genetic and physiological level.
Physiobiochemical and transcriptional responses of tobacco plants (Nicotiana tabacum L.) to different doses of polystyrene nanoplastics
Researchers examined how different concentrations of polystyrene nanoplastics affect tobacco plant growth at both the physiological and molecular levels. They found that higher doses caused oxidative stress, reduced photosynthesis, and triggered significant changes in gene expression related to stress responses. The study reveals that nanoplastic toxicity in plants is dose-dependent and involves complex molecular mechanisms beyond simple physical damage.
Occurrence and distribution of micro/nanoplastics in soils and their phytotoxic effects: A review
This review examined how micro- and nanoplastics distribute across different soil types and get taken up by plant roots, finding that smaller, spherical particles are absorbed more easily. Researchers found that these plastic particles accumulate in plants and trigger oxidative stress, which disrupts gene expression and metabolic pathways important for plant growth and biomass production.
Physiological and biochemical effects of polystyrene micro/nano plastics on Arabidopsis thaliana
Experiments on the model plant Arabidopsis showed that polystyrene nano- and microplastics reduced seed germination, stunted growth, lowered chlorophyll levels, and triggered oxidative stress in roots, with smaller particles and higher concentrations causing the most damage. These findings raise concerns about how microplastic contamination in agricultural soil could affect crop health and ultimately food production.
Uptake and distribution of microplastics of different particle sizes in maize (Zea mays) seedling roots
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.
Impact of polystyrene nanoplastics (PSNPs) on seed germination and seedling growth of wheat (Triticum aestivum L.)
Researchers exposed wheat seeds and seedlings to polystyrene nanoplastics and found that while germination rates were unaffected, root growth increased significantly compared to controls. However, the nanoplastics were taken up by the roots and transported to the shoots, reducing micronutrient absorption and altering key metabolic pathways related to energy and amino acid production. The findings suggest that nanoplastics can fundamentally change how crop plants grow and process nutrients.
Mechanistic insights into the effects of micro- and nano-plastics on cherry radish physiology and organic compound distribution at the soil-root interface.
Researchers exposed cherry radish to polyethylene microplastics (2 µm) and nanoplastics (200 nm) at varying concentrations and measured effects on plant physiology and organic compound distribution at the soil-root interface. Smaller nanoplastic particles caused greater disruption to root exudate chemistry and plant metabolism than the larger microplastics, pointing to a size-dependent toxicity mechanism.
Polystyrene microplastics disturb the redox homeostasis, carbohydrate metabolism and phytohormone regulatory network in barley
Researchers exposed barley plants to polystyrene microplastics and found the particles accumulated in roots and stunted rootlet development by disrupting redox balance, carbohydrate metabolism enzymes, and phytohormone signaling pathways.
[Effects of Microplastics on the Growth, Physiology, and Biochemical Characteristics of Wheat (Triticum aestivum)].
Wheat seedlings were grown in soils spiked with 100 nm and 5 μm polystyrene microplastics, with high concentrations (200 mg/L) significantly inhibiting root and stem elongation, reducing chlorophyll, and altering antioxidant enzyme activity, with smaller nanoplastics showing greater toxicity. The findings demonstrate that microplastic size influences phytotoxicity in a major agricultural crop.
Exploring the interaction between polystyrene nanoplastics and Allium cepa during germination: Internalization in root cells, induction of toxicity and oxidative stress
Researchers germinated onion seeds in the presence of 50 nm polystyrene nanoparticles and found that even the lowest dose caused cytotoxicity and genotoxicity in root meristem cells — including micronuclei formation — while fluorescence and electron microscopy confirmed that nanoparticles physically enter root cells and can potentially move up the food chain via crops.
Toxicity effects of nanoplastics on soybean (Glycine max L.): Mechanisms and transcriptomic analysis
Researchers exposed soybean plants to polystyrene nanoplastics and observed inhibited stem and root growth, increased oxidative stress, and disrupted photosynthesis. Transcriptomic analysis revealed that nanoplastics altered the expression of genes involved in plant stress responses, hormone signaling, and metabolic pathways. The study suggests that nanoplastic contamination in agricultural soils could negatively affect crop growth and yield at the molecular level.
Visual observation of polystyrene nano-plastics in grape seedlings of Thompson Seedless and assessing their effects via transcriptomics and metabolomics
Researchers demonstrated for the first time that polystyrene nanoplastics can be absorbed by grapevine roots and transported throughout the plant, reaching the leaves. The nanoplastics disrupted the plants' metabolism and activated stress-response pathways. This finding is important because it shows nanoplastics from contaminated soil could enter the food chain through grapes and other fruit crops.