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61,005 resultsShowing papers similar to Molecular mechanisms of toxicity and detoxification in rice (Oryza sativa L.) exposed to polystyrene nanoplastics
ClearResponse 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.
Polystyrene 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.
The Oryza sativa transcriptome responds spatiotemporally to polystyrene nanoplastic stress
Researchers profiled the full transcriptome of rice roots and leaves at multiple time points during polystyrene nanoplastic exposure, finding that nanoplastics suppress photosynthesis and sugar metabolism while activating plant defense pathways — with effects differing between organs and time points in ways that suggest indirect harm via disruption of plant-microbe interactions.
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.
Nanotoxicological effects and transcriptome mechanisms of wheat (Triticum aestivum L.) under stress of polystyrene nanoplastics
Researchers studied how polystyrene nanoplastics affect wheat plants at the molecular level using gene expression analysis. They found that nanoplastic exposure disrupted genes involved in photosynthesis, hormone signaling, and stress responses, ultimately reducing plant growth. The study provides new insights into how nanoplastic contamination in agricultural soils could harm crop development at a fundamental biological level.
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.
Effects of polystyrene nanoplastics with different functional groups on rice (Oryza sativa L.) seedlings: Combined transcriptome, enzymology, and physiology
Researchers exposed rice seedlings to polystyrene nanoplastics with different surface chemistries and found that all types reduced plant growth and photosynthetic ability. The amino-modified (positively charged) nanoplastics caused the most severe damage, reducing shoot growth by over 40% and dry weight by more than 70%. The study revealed that different surface modifications trigger distinct biological responses in the plant, affecting everything from ion transport to protein synthesis.
Polystyrene microplastic interaction with Oryza sativa: toxicity and metabolic mechanism
Researchers confirmed for the first time that polystyrene nanoplastics can enter rice plant root cells through a process called endocytosis. This finding provides important new understanding of how microplastic contamination in soil may affect crop plants and potentially enter the food supply.
Polystyrene Nanoplastics Impair Transcriptional Resilience to Salt Stress in Rice
Scientists found that tiny plastic particles (nanoplastics) make it much harder for rice plants to recover from salt stress, even after the stress is removed. The plastic particles disrupt the plants' ability to turn the right genes on and off, preventing them from bouncing back to normal growth. This matters because nanoplastics are increasingly found in our food system, and this research suggests they could harm crop resilience and potentially affect the nutritional quality of foods we eat.
Metabolomics revealing the response of rice (Oryza sativa L.) exposed to polystyrene microplastics
Researchers used metabolomics to investigate how polystyrene microplastics affect rice plants through both laboratory and field experiments. The study found that microplastic exposure reduced shoot biomass in a dose-dependent manner and altered antioxidant enzyme activity, suggesting that microplastics in agricultural soil can stress crops through measurable metabolic changes.
Effects of individual and combined polystyrene nanoplastics and phenanthrene on the enzymology, physiology, and transcriptome parameters of rice (Oryza sativa L.)
Researchers conducted a hydroponic experiment to evaluate how polystyrene nanoplastics and phenanthrene, individually and in combination, affect rice plants. The study examined effects on enzyme activity, plant physiology, and gene expression over seven days. Evidence indicates that the combination of nanoplastics with organic pollutants can produce different impacts on crop growth compared to either contaminant alone.
Toxicological effects and transcriptome mechanisms of rice (Oryza sativa L.) under stress of quinclorac and polystyrene nanoplastics
Researchers found that combined exposure to polystyrene nanoplastics and the herbicide quinclorac caused greater toxicity to rice than either stressor alone, with transcriptome analysis revealing disrupted pathways in photosynthesis, oxidative stress response, and hormone signaling.
Effect of Polystyrene Microplastics on Rice Seed Germination and Antioxidant Enzyme Activity
Researchers tested how different concentrations of polystyrene microplastics affect rice seed germination, root growth, and antioxidant enzyme activity. They found that at higher concentrations, the microplastics inhibited root growth and triggered oxidative stress responses in the seedlings. The study indicates that microplastic contamination in agricultural soils could interfere with early crop development, potentially affecting food production.
Size-dependent effects of polystyrene micro- and nanoplastics on the quality of rice grains and the metabolism mechanism
Researchers found that tiny polystyrene plastic particles (under 100 nanometers) were absorbed by rice roots and traveled up into the grain, reducing protein content by up to 29%. The smallest particles weakened the plant's natural defenses by disrupting sugar metabolism. This means microplastics in soil could be silently lowering the nutritional quality of rice that people eat.
Polystyrene nanoplastics induce cell type-dependent secondary wall reinforcement in rice (Oryza sativa) roots and reduce root hydraulic conductivity
Researchers found that polystyrene nanoplastics penetrating rice roots trigger a cell-type-specific defense response in which the plant reinforces its secondary cell walls with lignin and suberin in key barrier tissues, increasing wall thickness by up to 22% while simultaneously reducing the root's ability to absorb water by nearly 15%.
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.
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.
Rhizosphere nutrient dynamics and physiological responses of Oryza sativa L. under polyethylene terephthalate microplastic stress
Researchers exposed rice (Oryza sativa) to PET microplastics and found that the particles were absorbed by roots and translocated to aerial tissues, significantly inhibiting chlorophyll production, inducing oxidative stress (with malondialdehyde increasing by 175% at higher doses), and disrupting nitrogen, carbon, and phosphorus cycling genes in the rhizosphere.
The impact of polystyrene nanoplastics on lignin biosynthesis in Arabidopsis thaliana (L.)
Researchers exposed Arabidopsis plants to polystyrene nanoplastics and found that the particles penetrate root tissues and trigger a concentration-dependent buildup of lignin — the structural polymer that stiffens plant cell walls — as a defensive stress response, accompanied by increased oxidative damage markers and upregulation of lignin-biosynthesis genes.
Effects of microplastics on growth and metabolism of rice (Oryza sativa L.)
Researchers found that polystyrene and polyvinyl chloride microplastics inhibited rice growth and disrupted ionic homeostasis and antioxidant metabolism in a dose-dependent manner, with PVC microplastics causing more severe effects than polystyrene.
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.
Microplastics affect rice (Oryza sativa L.) quality by interfering metabolite accumulation and energy expenditure pathways: A field study
Researchers conducted a field study examining how polystyrene microplastics affect rice grain quality at the molecular level using metabolomic and transcriptomic analysis. They found that microplastic exposure interfered with metabolite accumulation and energy pathways in the rice plants, ultimately reducing grain quality. The study provides real-world evidence that microplastic contamination in agricultural soils can directly compromise the nutritional quality of a major food crop.
Polystyrene nanoparticles induce concerted response of plant defense mechanisms in plant cells
Researchers exposed plant cell cultures from wheat, barley, carrot, and tomato to polystyrene nanoparticles and found that the plastic particles triggered oxidative stress responses across all species. The defense mechanisms activated varied by plant species, exposure duration, and nanoplastic concentration, with tomato cells appearing most susceptible to damage. The study demonstrates that nanoplastics can induce chain reactions in plant defense systems, raising concerns about the impact of plastic pollution on crop health.
Micro (nano) plastics uptake, toxicity and detoxification in plants: Challenges and prospects
This review examines how micro and nanoplastics are taken up by plants, covering their toxic effects on growth and gene expression as well as potential detoxification strategies. Smaller nanoplastics can penetrate plant cell walls and accumulate in tissues, causing oxidative stress and genetic damage. The findings are important for human health because contaminated crops could transfer microplastics directly into the food supply.