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61,005 resultsShowing papers similar to Effect of combined contaminants (i.e., microplastics and heavy metals) on the enzymatic activity of soils
ClearEffects of polyethylene microplastics and heavy metals on soil-plant microbial dynamics
This study examined how polyethylene microplastics interact with heavy metals in soil and found that microplastics significantly reduced plant growth while altering soil enzyme activity and microbial communities. The combination of microplastics and heavy metals disrupted nutrient cycling in the soil in ways that were different from either pollutant alone. These findings suggest that microplastic contamination in agricultural soil could affect crop nutrition and food production.
[Effect of Microplastics and Phenanthrene on Soil Chemical Properties, Enzymatic Activities, and Microbial Communities].
A 300-day experiment tested how polyethylene and polypropylene microplastics, alone and combined with the PAH pollutant phenanthrene, affected soil chemistry, enzyme activity, and microbial communities. The results showed that microplastics and phenanthrene interacted to reshape soil microbial composition and function in ways that neither contaminant produced alone, suggesting that co-contamination by microplastics and organic pollutants poses compounded risks to soil ecosystem health.
Effects of Polyethylene Microplastics and Phenanthrene on Soil Properties, Enzyme Activities and Bacterial Communities
Researchers conducted a year-long soil microcosm experiment finding that polyethylene microplastics and phenanthrene, individually and combined, significantly altered soil pH, enzyme activities, and bacterial community diversity and function, with combined pollution showing the most pronounced effects.
Coexistence of microplastics and Cd alters soil N transformation by affecting enzyme activity and ammonia oxidizer abundance
Researchers studied how the combined presence of microplastics and cadmium in soil affects nitrogen cycling, a process essential for soil fertility. They found that the pollutant mixture altered enzyme activity and shifted the balance of ammonia-oxidizing microbial communities more than either contaminant alone. The findings suggest that co-contamination of soils with microplastics and heavy metals could disrupt nutrient cycles critical for plant growth.
Combined pollution of soil by heavy metals, microplastics, and pesticides: Mechanisms and anthropogenic drivers
This study investigated how heavy metals, microplastics, and pesticides interact when they contaminate soil together, finding that their combined effects are complex and often worse than any single pollutant. Microplastics can absorb and concentrate both heavy metals and pesticides, changing how these chemicals move through soil and into plants. The findings highlight how agricultural soils contaminated with multiple pollutants could increase human exposure through crops grown in that soil.
Effect of emerging contaminants on soil microbial community composition, soil enzyme activity, and strawberry plant growth in polyethylene microplastic-containing soils
Researchers found that emerging contaminants altered soil microbial community composition and enzyme activity, but these effects were suppressed when HDPE microplastics were also present in the soil, suggesting microplastics may modulate how soils respond to chemical contaminants.
Toxicological complexity of microplastics in terrestrial ecosystems
This review summarizes how microplastics interact with other pollutants like heavy metals and pesticides in soil, creating combined toxic effects that threaten ecosystems and agriculture. The paper highlights that microplastics can change soil structure and disrupt the communities of microorganisms that keep soil healthy, with ripple effects on crop yields and food security.
A critical review of co-pollution of microplastics and heavy metals in agricultural soil environments
This review examines how microplastics and heavy metals frequently occur together in agricultural soil, where they interact in ways that can increase the toxicity of both. These co-contaminants can harm soil organisms, reduce crop productivity, and potentially enter the human food chain, making their combined presence in farmland a growing concern for food safety and health.
Combined Effect of Microplastics and Cd Alters the Enzymatic Activity of Soil and the Productivity of Strawberry Plants
This study tested how microplastics and the heavy metal cadmium together affect soil health and strawberry plant growth. The combination of both pollutants reduced soil enzyme activity and decreased strawberry yields more than either pollutant alone. This matters for food safety because microplastics in agricultural soil may amplify the harmful effects of other contaminants already present, potentially affecting both crop productivity and what ends up on your plate.
Ecotoxicological effects of polyethylene microplastics and lead (Pb) on the biomass, activity, and community diversity of soil microbes
A soil experiment found that polyethylene microplastics made lead (a toxic heavy metal) more available in soil and worsened its harmful effects on soil microorganisms. The combination reduced beneficial enzyme activity, lowered microbial efficiency, and shifted the soil microbial community, suggesting that microplastic pollution in contaminated soils could amplify heavy metal toxicity in ways that ultimately affect food crops and human health.
Effects of combined microplastics and heavy metals pollution on terrestrial plants and rhizosphere environment: A review
This review summarizes how microplastics and heavy metals interact in soil to affect plant growth and the surrounding ecosystem. When present together, these pollutants cause significantly more harm than either alone, reducing plant weight by up to 87.5% and altering how heavy metals accumulate in crops -- raising concerns about food safety and human exposure through contaminated agricultural products.
Rhizosphere microbial activities in response to combined effects of drought and microplastic
Researchers studied how combined drought stress and microplastic contamination affect rhizosphere microbial activities, finding that microplastics exacerbated drought-induced suppression of soil enzyme activities and altered microbial community structure around plant roots.
Microplastics and Co‐Contaminants in Soil: A Review of Combined Ecological Impact and Emerging Remediation Strategies
This review synthesizes evidence on how microplastics in soil interact with co-contaminants including heavy metals, pharmaceuticals, and persistent organic pollutants, finding that microplastics modify the mobility, bioavailability, and toxicity of these co-occurring pollutants in ways that current risk assessments do not fully capture.
Impacts of microplastics and heavy metals on the earthworm Eisenia foetida and on soil organic carbon, nitrogen and phosphorus
Researchers assessed the combined effects of polypropylene microplastics and a heavy metal mixture (copper, chromium, and zinc) on the earthworm Eisenia foetida and on soil organic carbon, nitrogen, and phosphorus cycling. The study found that co-contamination exacerbated adverse effects on earthworm survival and soil nutrient dynamics compared to single-pollutant exposures, highlighting synergistic risks of combined microplastic and metal pollution in terrestrial ecosystems.
Assessing Microplastic Contamination Effects on Soil Microbial Communities in Agricultural Land
This study sampled agricultural soils with varying degrees of microplastic contamination to assess effects on microbial diversity, abundance, and enzymatic activity, finding that higher microplastic concentrations reduced microbial diversity and suppressed nutrient-cycling enzyme activity.
Impacts of microplastics and heavy metals on the earthworm Eisenia fetida and on soil organic carbon, nitrogen, and phosphorus
Researchers found that co-contamination by polypropylene microplastics and heavy metals (Cu, Cr, Zn) had synergistic adverse effects on earthworms and soil quality, reducing organic carbon and nitrogen levels more than either contaminant alone.
Influence of microplastics and environmentally persistent free radicals on the ability of biochar components to promote degradation of antibiotics by activated peroxymonosulfate
Researchers investigated how microplastics and environmentally persistent free radicals (EPFRs) together influence the activity of soil enzymes, finding that combined exposure produced greater inhibition of dehydrogenase and urease activity than either contaminant alone. The results indicate EPFRs can amplify the toxic effects of microplastics on soil microbial processes.
Phytoremediation of Co-Contaminated Environments: A Review of Microplastic and Heavy Metal/Organic Pollutant Interactions and Plant-Based Removal Approaches
This review examined how microplastics interact with heavy metals and organic pollutants in soil and how plants can be used to clean up these mixed contamination scenarios. Researchers found that microplastics can either increase or decrease the toxicity of co-pollutants depending on their chemical properties, and emerging approaches like genetically modified plants and microbial partnerships show promise for improving cleanup efforts.
Co-exposure to microplastics and soil pollutants significantly exacerbates toxicity to crops: Insights from a global meta and machine-learning analysis
A large-scale analysis of 68 studies found that when microplastics combine with other soil pollutants, the harm to crops is significantly worse than from the other pollutants alone. Microplastics intensified damage to plant growth, increased oxidative stress, and reduced photosynthesis efficiency. Interestingly, microplastics did reduce the amount of other pollutants that accumulated in the crops, but the overall toxic effects on plant health were still greater.
Polypropylene Microplastics and Cadmium: Unveiling the Key Impacts of Co-Pollution on Wheat–Soil Systems from Multiple Perspectives
Researchers found that polypropylene microplastics combined with cadmium co-pollution impaired wheat germination, reduced plant growth, and disrupted soil microbial communities more severely than either contaminant alone, demonstrating synergistic toxicity in an agriculturally important crop.
Interactions of microplastics and main pollutants and environmental behavior in soils
This review examined how microplastics interact with major soil pollutants including heavy metals, pesticides, and organic contaminants, analyzing their combined environmental behavior, transport mechanisms, and ecological hazards in agricultural and terrestrial soils.
Coexistence of microplastics and heavy metals in soil: Occurrence, transport, key interactions and effect on plants
This review examines how microplastics and heavy metals like lead, cadmium, and arsenic interact in soil, often creating combined toxic effects on plants that differ from either pollutant alone. These interactions are relevant to human health because contaminated crops can transfer both microplastics and heavy metals to people through the food supply.
Effects of microplastics and cadmium on the soil-wheat system as single and combined contaminants
Researchers found that polyethylene and polypropylene microplastics combined with cadmium reduced wheat chlorophyll concentrations and affected soil-plant systems differently depending on pollution levels, revealing complex interaction effects between co-contaminants.
Microplastics affect ecosystem multifunctionality: Increasing evidence from soil enzyme activities
This review examines how microplastics alter the activity of soil enzymes that are essential for nutrient cycling, decomposition, and carbon regulation. Biodegradable microplastics generally caused more pronounced effects than conventional plastics, and the changes in enzyme activity could ultimately affect soil fertility and the nutritional quality of crops grown for human consumption.