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61,005 resultsShowing papers similar to Polypropylene Microplastics Bidirectionally Modulate Copper Toxicity in Jasminum sambac by Rewiring Glutathione and Porphyrin‐Photosynthetic Networks
ClearCombined Exposure to Polyethylene Microplastics and Copper Affects Growth and Antioxidant Responses in Rice Seedlings
Researchers exposed rice seedlings to polyethylene microplastics and copper both individually and in combination and found that microplastics significantly enhanced copper uptake, increasing accumulation by about 25% compared to copper alone. While microplastics alone had minimal effects on growth, the combined exposure intensified oxidative stress in roots and altered antioxidant defense responses. The study demonstrates that microplastics can increase the bioavailability and toxicity of heavy metals in agricultural crop systems.
Antidote or Trojan horse for submerged macrophytes: Role of microplastics in copper toxicity in aquatic environments
Researchers investigated whether polyethylene microplastics act as an antidote or a Trojan horse for copper toxicity to submerged aquatic plants. The study found that microplastics reduced dissolved copper concentrations through adsorption but could then release copper-loaded particles that were taken up by plants. The results suggest that microplastics may initially reduce copper toxicity in water but ultimately serve as carriers that deliver copper directly into plant tissues.
Morphological, physiological, and molecular responses of Perilla frutescens to copper stress alleviated by PVC microplastics
Researchers discovered that low concentrations of PVC microplastics can actually reduce the harmful effects of copper on perilla plants, an important crop. The microplastics appeared to help by improving cell membrane function, suppressing stress hormones, and adjusting fat metabolism pathways. While this does not mean microplastics are beneficial overall, the study reveals surprisingly complex interactions between plastic pollution and heavy metals in agricultural environments.
Environmental efficacy of polyethylene microplastics: Enhancing the solidification of CuO nanoparticles and reducing the physiological toxicity to peanuts
Researchers examined how polyethylene microplastics interact with copper oxide nanoparticles in soil and their combined effects on peanut plant growth. They found that while polyethylene alone had minimal impact, it reduced the dissolution and absorption of toxic copper oxide nanoparticles, effectively lessening their harmful effects on peanut biomass. The study suggests that microplastics may sometimes act as a moderating influence on the toxicity of co-occurring metal nanoparticle pollutants in agricultural settings.
Microplastics impacts the toxicity of antibiotics on Pinellia ternata: An exploration of their effects on photosynthesis, oxidative stress homeostasis, secondary metabolism, the AsA-GSH cycle, and metabolomics
This study found that polyethylene microplastics changed how the medicinal plant Pinellia ternata responds to antibiotic contamination in soil. At low concentrations, microplastics slightly reduced the toxicity of the antibiotic, but at higher levels they worsened the damage to plant photosynthesis, antioxidant systems, and metabolic pathways. The findings show that microplastics can alter how other pollutants affect crop plants, making the real-world impacts of soil contamination harder to predict.
Mitigating potential of polystyrene microplastics on bioavailability, uptake, and toxicity of copper in maize (Zea mays L.)
This study found that polystyrene microplastics in soil actually reduced copper toxicity in maize plants by binding to the copper and making it less available for plant uptake. While this might seem beneficial, it means microplastics are changing how nutrients and metals move through agricultural soil in unpredictable ways. The findings highlight that microplastic contamination in farmland can alter the chemistry of soil in complex ways that affect crop nutrition and food safety.
The Effect of Microplastics-Plants on the Bioavailability of Copper and Zinc in the Soil of a Sewage Irrigation Area
Researchers examined how different concentrations of microplastics affect the bioavailability of copper and zinc in sewage-irrigated soils, finding that microplastics can alter heavy metal mobility and plant uptake, with implications for food safety in contaminated agricultural areas.
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.
Phytotoxic effects of polyethylene microplastics combined with cadmium on the photosynthetic performance of maize (Zea mays L.)
Researchers studied how polyethylene microplastics combined with cadmium, a toxic heavy metal, affect photosynthesis in two varieties of maize. They found that microplastics generally worsened cadmium's negative effects on the plants' ability to capture light energy and convert it to growth, though responses differed between maize varieties. The study suggests that microplastic pollution in agricultural soils could amplify the harm caused by heavy metal contamination to crop productivity.
Understanding the Role of Low-Dose Polystyrene Microplastic in Copper Toxicity to Rice Seed (Oryza sativa L.)
This study explored how polystyrene microplastics interact with copper toxicity in rice seeds. Researchers found that microplastics actually reduced copper's harmful effects by physically accumulating on seed coats and blocking copper absorption, lowering the amount of copper taken up by seedlings by about 34%. The findings highlight how microplastics can alter the way other environmental contaminants affect plants.
Meta-analysis reveals the combined effects of microplastics and heavy metal on plants
A meta-analysis of 57 studies found that the combined toxicity of microplastics and heavy metals on plants is driven primarily by the heavy metals, while microplastics mainly interact by inducing oxidative stress damage. Microplastic biodegradation emerged as a core factor influencing heavy metal accumulation in plants, with culture environment, heavy metal type, exposure duration, and microplastic concentration and size all playing roles.
Translocation and chronic effects of microplastics on pea plants (Pisum sativum) in copper-contaminated soil
Researchers studied how polystyrene nanoplastics affect pea plants grown in copper-contaminated soil over a full growing season. They found that the combination of nanoplastics and copper reduced crop yield, impaired nutritional quality, and that nanoplastic particles were taken up and transported throughout the plant tissues. The study suggests that microplastic contamination in polluted agricultural soils may compound existing threats to crop productivity and food safety.
The Effects of Polystyrene Microplastics and Copper Ion Co-Contamination on the Growth of Rice Seedlings
Researchers studied how polystyrene microplastics and copper ions interact when both are present in the water supply of rice seedlings. They found that microplastics actually reduced copper toxicity by absorbing the metal ions, but both pollutants weakened the plant's antioxidant defenses. The study suggests that microplastics and heavy metals interact in complex ways in agricultural systems, with implications for crop health and food safety.
Single and combined toxicity of polystyrene nanoplastics and copper on Platymonas helgolandica var. tsingtaoensis: Perspectives from growth inhibition, chlorophyll content and oxidative stress
Researchers investigated the single and combined toxicity of polystyrene nanoplastics and copper on the marine microalga Platymonas helgolandica. The study found that copper alone inhibited growth in a dose-dependent manner, while nanoplastics modified copper's bioavailability and altered the combined toxic response. The results suggest that the interaction between nanoplastics and heavy metals can produce complex toxicity patterns that differ from individual exposures.
From energy collapse to chemical defense: Microplastics reshape the metabolic landscape of Tetrastigma hemsleyanum (Vitaceae)
Researchers investigated how polystyrene microplastics affect the medicinal plant Tetrastigma hemsleyanum, confirming that the particles accumulate in roots and travel to leaves through the vascular system. Microplastic exposure caused significant oxidative damage, a 42.5% reduction in chlorophyll content, and disrupted photosynthetic energy metabolism. The plant responded by redirecting metabolic resources from carbon fixation toward producing antioxidant flavonoid compounds as a defense mechanism.
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.
Euphorbia marginata Alleviate Heavy Metal Ni-Cu Combined Stress by Regulating the Synthesis of Signaling Factors and Flavonoid Organisms
Despite its title referencing heavy metal stress in plants, this paper studies how the ornamental plant Euphorbia marginata responds physiologically and genetically to copper and nickel contamination in soil — not microplastic pollution. It examines antioxidant responses, cell membrane damage, and gene expression related to phytoremediation of heavy metals and is not relevant to microplastics or human health from plastic exposure.
Dual regulation of pakchoi–soil systems by zinc oxide nanoparticles under polyethylene microplastics stress: Dose-dependent effects, microbial cascades, and risk propagation
Researchers studied how zinc oxide nanoparticles at different doses regulate the pakchoi-soil-microbe system under polyethylene microplastic stress, finding dose-dependent effects on plant antioxidant responses, nutrient uptake, and soil bacterial communities that reflect complex, interacting contamination risks.
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.
Ameliorating arsenic and PVC microplastic stress in barley (Hordeum vulgare L.) using copper oxide nanoparticles: an environmental bioremediation approach
Researchers studied the combined stress of PVC microplastics and arsenic on barley plants, along with the potential mitigating effect of copper oxide nanoparticles. They found that increasing levels of microplastics and arsenic significantly reduced plant growth, photosynthesis, and biomass while increasing oxidative stress markers. Application of copper oxide nanoparticles substantially improved plant health by boosting antioxidant defenses and reducing oxidative damage.
Effects of microplastic and copper applications on chlorophyll and carotenoid contents in kale and tomato
Researchers investigated the individual and combined effects of microplastics and copper on kale and tomato plants, measuring impacts on chlorophyll and carotenoid pigment content to assess how co-contamination of agricultural soils affects crop physiology.
Microplastics as emerging stressors in plants: biochemical and metabolic responses
This review examines how microplastics act as environmental stressors in plants, disrupting biochemical and metabolic processes including photosynthesis, antioxidant defenses, and nutrient uptake, with effects varying by polymer type, particle size, and concentration.
Integrated physiological, transcriptomic, and metabolic analysis reveals the effects of nanoplastics exposure on tea plants
Researchers used physiological, transcriptomic, and metabolic analysis to assess the effects of nano/microplastics on tea plants, finding impaired photosynthesis, oxidative stress, and disrupted metabolic pathways at environmentally relevant concentrations. The study highlights risks to tea crop safety and quality from plastic pollution in agricultural soils.
Detoxifying the heavy metals: a multipronged study of tolerance strategies against heavy metals toxicity in plants
This review looks at how plants deal with toxic heavy metals in their environment, covering strategies like blocking metal uptake, storing metals in safe compartments, and using special proteins to neutralize damage. While not directly about microplastics, it is relevant because microplastics can carry heavy metals into soil, making plant exposure worse. Understanding these plant defense mechanisms could help develop crops that are more resilient to contaminated environments.