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61,005 resultsShowing papers similar to Influence of polyethylene microplastics on Brassica rapa: Toxicity mechanism investigation
ClearToxicity of polyvinyl chloride microplastics on Brassica rapa
Researchers exposed Brassica rapa plants to UV-weathered PVC microplastics and found significant growth inhibition, with stem length reduced by nearly 46% and root length by 35% after 30 days. The microplastic particles blocked leaf stomata and were observed entering the plant tissue, triggering stress responses including increased enzyme activity. The study suggests that microplastics in soil can physically and chemically interfere with normal plant development.
Unraveling the impact of nano-microscale polyethylene and polypropylene plastics on Nicotiana tabacum: Physiological responses and molecular mechanisms
Researchers exposed tobacco plants to polyethylene and polypropylene microplastics of different sizes and found that both types suppressed plant growth in a dose-dependent manner, with polypropylene being more toxic. The microplastics disrupted photosynthesis, triggered oxidative stress, and altered hormone signaling and defense pathways in the plants. These findings demonstrate that microplastic contamination in soil can impair crop growth at the molecular level, potentially affecting agricultural productivity.
Environmental levels of microplastics disrupt growth and stress pathways in edible crops via species-specific mechanisms
Researchers studied how environmentally realistic levels of microplastics affect the growth and stress responses of edible crops. The study found that microplastics disrupt plant growth and stress pathways through mechanisms that vary by crop species. These findings highlight the importance of understanding how different plants interact with microplastic particles when assessing risks to agricultural food production.
Assessment of physiological stress on plants grown in soil contaminated with microplastics
Researchers tested how three types of microplastics (PET, HDPE, and polyester) affect the growth and health of spring onion and okra plants. They found that all microplastic types reduced chlorophyll levels, increased oxidative stress, and stunted plant growth, with HDPE and polyester causing the most damage. The study highlights the potential ecological risks microplastics pose to vegetable crops grown in contaminated soil.
Impact of microplastics on bioaccumulation of heavy metals in rape (Brassica napus L.)
Researchers found that microplastics influenced the bioaccumulation of copper and lead in rapeseed plants, with effects varying by microplastic concentration and heavy metal type, revealing how plastic pollution may alter contaminant uptake in crops.
The phytotoxicity of microplastics to the photosynthetic performance and transcriptome profiling of Nicotiana tabacum seedlings
Researchers grew tobacco seedlings in soil contaminated with polyethylene microplastics and found significant damage to their photosynthetic systems, including reduced chlorophyll content and impaired light-use efficiency. Gene analysis revealed that thousands of genes were affected, with 79 key genes related to photosynthesis being suppressed. The study provides new molecular-level evidence that soil microplastic pollution can directly harm how plants convert sunlight into energy.
Assessing stress responses in potherb mustard (Brassica juncea var. multiceps) exposed to a synergy of microplastics and cadmium: Insights from physiology, oxidative damage, and metabolomics
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.
Assessing the impact of micro and nanoplastics on the productivity of vegetable crops in terrestrial horticulture: a comprehensive review
This review summarizes research on how micro and nanoplastics accumulate in farmland and get absorbed by vegetable crops through their roots, building up in the edible parts of the plants. The plastic particles cause toxic effects that stunt plant growth by disrupting cellular processes and gene activity. This means the vegetables people eat may contain microplastics picked up from contaminated soil.
Natural Aging IntensifiesMicroplastic Phytotoxicityin Brassica chinensis
Researchers compared pristine and artificially aged polyethylene and polystyrene microplastics applied to pak choi (Brassica chinensis) in soil over 45 days. Aged MPs with oxidised surfaces caused stronger phytotoxicity than pristine MPs, reducing plant biomass and disrupting soil enzyme activity, demonstrating that environmental weathering worsens MP impacts on crops.
Biochemical and transcriptomic responses of buckwheat to polyethylene microplastics
Researchers grew buckwheat in soil contaminated with polyethylene microplastics and found that higher concentrations disrupted the plant's growth, photosynthesis, and antioxidant defenses. The microplastics were able to invade the roots and lodge in the plant's internal transport tissues. This is concerning for food safety because buckwheat is a widely consumed crop, and microplastics entering through the roots could potentially reach the parts of the plant that people eat.
Microplastic pollution in agriculture: How exposure pathway (Seed, Leaf, Root) dictates phytotoxicity in lettuce (Lactuca sativa L.)
This study compared the phytotoxicity of polyethylene microplastics applied to lettuce via seed, leaf, and root exposure pathways, finding that root exposure caused the greatest growth inhibition and oxidative stress. The route of MP exposure significantly influenced the type and severity of toxic effects on crops.
Natural Aging Intensifies Microplastic Phytotoxicity in Brassica chinensis
Researchers compared the effects of pristine and naturally aged polyethylene and polystyrene microplastics on Chinese cabbage growth and soil health over a 45-day experiment. They found that aged microplastics with oxidized surfaces caused significantly more plant damage, reducing biomass and chlorophyll content more than their pristine counterparts. The study suggests that as microplastics weather in agricultural soils, they may become increasingly harmful to crops.
Effects of plastic fragments on plant performance are mediated by soil properties and drought
Researchers found that plastic fragments reduced soil water content and negatively affected Arabidopsis thaliana growth, with effects most pronounced under drought conditions and dependent on soil texture, suggesting plastic pollution and water stress interact to compound harm to plants.
Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth
Researchers assessed how polyamide, LDPE, and polypropylene microplastics affect Andisol soil properties and radish growth, finding microplastics reduced soil nitrogen cycling, disrupted microbial communities, and induced oxidative stress in plants — with effects varying by polymer type.
Effect of polyethylene terephthalate (PET) microplastics on radish and carrot growth, nutrient uptake, and physiological stress responses
Researchers exposed radish and carrot seedlings to PET microplastics (0.1 g/L) for one week and measured growth, nutrient uptake, and stress markers. While plant biomass was unaffected, chlorophyll levels dropped and oxidative stress indicators rose significantly, showing physiological harm even without visible growth effects.
Unveiling the mechanism of micro-and-nano plastic phytotoxicity on terrestrial plants: A comprehensive review of omics approaches.
This comprehensive review examined how micro-and-nano plastics (MNPs) in terrestrial soils damage plant health by inhibiting water and nutrient uptake, reducing seed germination, impairing photosynthesis, and inducing oxidative stress. The review identified key knowledge gaps in understanding MNP phytotoxicity mechanisms and their implications for food security.
Transcriptomic and metabolomic changes in lettuce triggered by microplastics-stress
Researchers grew lettuce in water containing polystyrene microplastics and found that the particles accumulated in root tips and leaf veins, causing water loss stress and changes in gene expression. The plants responded by activating stress defense systems and altering their metabolism, including increased production of protective compounds in root secretions. This study provides molecular-level evidence that microplastics can stress food crops and change their biology, raising questions about the safety and nutritional quality of vegetables grown in contaminated environments.
The effect of microplastic contaminated compost on the growth of rice seedlings
Researchers found that adding PET microplastics to compost significantly harmed rice seedling growth, reducing root length by 38%, plant height by 25%, and chlorophyll content by up to 55%. The microplastics appeared to interfere with nutrient uptake and photosynthesis. This is concerning because compost used in agriculture is often contaminated with plastic waste, which could reduce crop yields and potentially affect food quality.
Ecotoxicity and genotoxicity of polystyrene microplastics on higher plant Vicia faba
Researchers exposed fava bean root tips to polystyrene microplastics and nanoplastics and found reduced biomass, increased oxidative stress, and genetic damage in the plant cells. The smaller nanoplastic particles caused more severe effects than the larger microplastics. The study suggests that plastic particle contamination in soil may threaten plant health at the cellular and genetic level.
Effect of polyethylene particles on dibutyl phthalate toxicity in lettuce (Lactuca sativa L.).
Polyethylene microplastic fragments in soil reduced the uptake of the plasticizer chemical dibutyl phthalate (DBP) into lettuce roots but worsened its inhibitory effects on root growth. The complex interactions between microplastics and co-occurring chemical contaminants like phthalates can alter toxicity in unexpected ways, affecting both plant growth and the safety of food crops.
Uptake of microplastics and impacts on plant traits of savoy cabbage
Researchers found that savoy cabbage plants can absorb polystyrene microplastic particles as small as 0.5 micrometers directly into their cells. Different types and sizes of plastic particles affected plant growth and leaf chemistry in distinct ways, including changes to certain amino acid and defense compound levels. This is concerning because it demonstrates a direct pathway for microplastics to enter the human diet through vegetables.
Potential impact and mechanism of aged polyethylene microplastics on nitrogen assimilation of Lactuca sativa L.
Researchers investigated how aged polyethylene microplastics of different sizes affect nitrogen uptake and metabolism in romaine lettuce. They found that aged microplastics, especially smaller particles, accumulated in the plants and disrupted nitrogen assimilation processes. The study suggests that microplastic contamination in agricultural soils may affect crop nutrition and quality by interfering with how plants absorb and process essential nutrients.
[Effects of Low-density Polyethylene Microplastics on the Growth and Physiology Characteristics of Ipomoea aquatica Forsk].
Researchers grew water spinach in soil spiked with low-density polyethylene microplastics at varying concentrations and found that even moderate doses reduced germination rates, stunted growth, and disrupted photosynthesis. The study suggests that microplastic contamination in agricultural soil could threaten food crop yields and quality.
Effects of microplastics polluted soil on the growth of Solanum lycopersicum L.
This study tested how microplastic-contaminated soil affects tomato plant growth, finding that higher concentrations of plastic particles in soil reduced plant height, root development, and overall crop health. The results suggest that microplastic pollution in farmland could reduce food crop yields and potentially affect the quality of the produce we eat.