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20 resultsShowing papers similar to Transmembrane uptake of polystyrene nanoplastics mediated by aquaporin in tartary buckwheat: Physiological consequence and genomic mechanism
ClearAquaporin inhibitors modulate the toxic effects of polystyrene nanoplastics on Chrysanthemum coronarium L.
Researchers studied how polystyrene nanoplastics affect the growth of crown daisy plants and found that the particles entered roots through water channel proteins called aquaporins. When these channels were blocked with inhibitors, nanoplastic uptake decreased and the negative effects on plant growth were partially reversed. The study provides new insight into how nanoplastics get into food crops and suggests potential strategies for reducing their uptake.
Translocation of polystyrene nanoplastics in distinct plant species: Novel insight from a split-root system and transcriptomic analysis
Researchers used a split-root system to study how polystyrene nanoplastics move through cucumber and maize plants, finding that the particles travel from roots to shoots via xylem and redistribute back to roots via phloem. Cucumber roots accumulated more nanoplastics than maize, while maize showed greater redistribution from shoots back to roots. The study revealed that aquaporin proteins play a key role in regulating nanoplastic uptake and transport in plants.
Transport Dynamics and Physiological Responses of Polystyrene Nanoplastics in Pakchoi: Implications for Food Safety and Environmental Health
Researchers tracked fluorescently labeled nanoplastics as they traveled through pakchoi (a leafy green vegetable), entering through the roots, moving up through the plant's water-transport system, and accumulating in the leaves. The nanoplastics caused oxidative damage and disrupted plant hormones, demonstrating a clear pathway by which plastic pollution in soil could enter the human food supply through everyday vegetables.
Transport Dynamicsand Physiological Responses ofPolystyrene Nanoplastics in Pakchoi: Implications for Food Safetyand Environmental Health
Researchers tracked the transport and physiological responses of polystyrene nanoplastics in pakchoi (bok choy) plants, finding that nanoplastics were absorbed through roots and translocated to shoots where they disrupted chlorophyll production and reduced plant growth.
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.
Polystyrene nanoplastics' accumulation in roots induces adverse physiological and molecular effects in water spinach Ipomoea aquatica Forsk
Researchers exposed water spinach to polystyrene nanoplastics in a hydroponic experiment and tracked where the particles accumulated in the plant. They found that nanoplastics built up primarily in the roots, causing reduced growth, impaired photosynthesis, and disrupted antioxidant defense systems. The study raises concerns about nanoplastic uptake by edible aquatic vegetables and the potential implications for food safety.
Polymer nanoparticles pass the plant interface
Researchers created well-defined fluorescent polymer nanoparticles and tracked their uptake into the roots and cells of Arabidopsis plants using microscopy. They found that smaller nanoparticles were taken up more efficiently than larger ones, with particles entering through the root system. The study provides direct evidence that nanoplastics can cross plant cell barriers, which has implications for understanding how plastic pollution may enter the food chain through crops.
Low temperature tolerance is impaired by polystyrene nanoplastics accumulated in cells of barley (Hordeum vulgare L.) plants
Barley plants irrigated with polystyrene nanoplastics accumulated the particles in cells and showed impaired cold tolerance during low temperature stress, with confocal imaging confirming that nanoplastics can cross the cell wall and accumulate in plant tissue.
Polystyrene nano- and microplastic accumulation at Arabidopsis and wheat root cap cells, but no evidence for uptake into roots
Researchers investigated whether polystyrene nano- and microplastics can be taken up by the roots of Arabidopsis and wheat plants. They found that plastic particles accumulated at root cap cells on the outer surface of roots but found no evidence that the particles were actually taken up into root tissues. The study suggests that while plastic particles associate with plant roots, they may not easily enter the plant itself through this pathway.
Accumulation of nanoplastics by wheat seedling roots: Both passive and energy-consuming processes
This study investigated how wheat seedling roots absorb and transport polystyrene and PVC nanoplastics, finding that uptake occurred through both passive (energy-independent) and active (energy-consuming) processes. Root uptake efficiency varied by particle type and size, with implications for nanoplastic entry into the food chain via crop plants.
Translocation mechanism and the role of aerenchyma in nanoplastic translocation in Myriophyllum sp. “Roraima” and physiological responses
Researchers traced how 50-nm nanoplastics enter, move through, and affect the aquatic plant Myriophyllum sp., finding that aerenchyma (air-conducting tissue) channels facilitate nanoplastic transport within the stem and that exposure alters photosynthetic efficiency and triggers antioxidant responses even without visible physical damage.
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.
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.
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%.
Cellular Process of Polystyrene Nanoparticles Entry into Wheat Roots
Researchers investigated how polystyrene nanoparticles enter wheat root cells, finding that smaller particles (100 nm) were internalized more readily than larger ones, with surface charge influencing uptake pathways through both endocytosis and direct penetration of cell walls.
Uptake and translocation of polystyrene nanoplastics in edible plants via root and foliar exposure: A qualitative imaging-based study
Researchers examined the uptake and movement of polystyrene nanoplastics in lettuce, carrot, and wheat following root and foliar exposure using confocal and electron microscopy. The study found that nanoplastics were internalized in root, stem, and leaf tissues of all three species, with lettuce showing the most extensive systemic transport including bidirectional movement, raising potential concerns for human exposure through crop consumption.
Foliar implications of polystyrene nanoplastics on leafy vegetables and its ecological consequences
Scientists applied polystyrene nanoplastics to four common leafy vegetables and found that the tiny particles accumulated on leaf surfaces, particularly around the pores plants use to breathe. This accumulation reduced the plants' chlorophyll content and ability to photosynthesize, affecting their growth and nutritional quality. The findings raise concerns that airborne nanoplastic pollution could compromise the safety and nutritional value of the vegetables people eat.
Insight into the absorption and migration of polystyrene nanoplastics in Eichhornia crassipes and related photosynthetic responses
Researchers studied how water hyacinth plants absorb and transport polystyrene nanoplastics of different sizes. Smaller nanoplastics (20 nm) penetrated deeper into root tissue and migrated to leaves, while larger ones (200 nm) mostly stayed in the roots. Both sizes impaired photosynthesis, suggesting that nanoplastic pollution in waterways can harm aquatic plants that play important roles in water purification.
Mechanism of transport and toxicity response of Chlorella sorokiniana to polystyrene nanoplastics
Researchers studied how polystyrene nanoplastics are transported into freshwater algae cells and what toxic effects they cause. They found that the tiny plastic particles entered the cells through specific pathways and triggered oxidative stress, inhibiting algae growth. The study provides new insights into how nanoplastics disrupt the base of aquatic food chains by damaging microscopic organisms.
Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies
Researchers studied how nanoplastics are taken up by tree roots and whether this uptake affects tree health and function. They found that trees did absorb nanoplastics through their root systems, and the particles caused oxidative stress and reduced photosynthetic capacity. The study suggests that plastic pollution in soil could impair the functioning of trees, which play a critical role in carbon sequestration and ecosystem health.