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20 resultsShowing papers similar to Microplastics modify plant-arbuscular mycorrhizal fungi systems in a Pb-Zn-contaminated soil
ClearInteractions of microplastics and cadmium on plant growth and arbuscular mycorrhizal fungal communities in an agricultural soil
Researchers studied how polyethylene and polylactic acid microplastics interact with cadmium contamination to affect maize growth and beneficial soil fungi in agricultural soil. While polyethylene showed minimal direct plant toxicity, high doses of polylactic acid significantly reduced maize biomass, and both plastic types altered the communities of root-associated fungi. The study suggests that co-contamination of microplastics and heavy metals in farmland can jointly disrupt plant health and soil ecosystems.
Arbuscular mycorrhizal fungi enhance maize cadmium resistance and reduce translocation: Dependence on microplastics concentration
Researchers investigated how beneficial soil fungi called arbuscular mycorrhizal fungi can help maize plants resist cadmium toxicity in soils contaminated with both microplastics and heavy metals. They found that high concentrations of polyethylene microplastics worsened cadmium toxicity, but inoculation with mycorrhizal fungi significantly improved plant growth, nutrient uptake, and photosynthesis. The study suggests that these fungi could serve as a biological tool for managing crop health in soils with combined microplastic and heavy metal contamination.
Migration and accumulation of microplastics in soil-plant systems mediated by symbiotic microorganisms and their ecological effects
This study found that beneficial soil fungi (mycorrhizal fungi) actually accelerate the uptake of smaller microplastics by plant roots while slowing the uptake of larger ones. The microplastics disrupted the symbiotic relationship between the fungi and plants, reducing plant nutrient absorption and growth, which matters because crops grown in microplastic-contaminated soil may be less nutritious.
Influencing mechanisms of microplastics existence on soil heavy metals accumulated by plants
This review summarizes existing research on how microplastics in soil affect the uptake of heavy metals by plants. Microplastics can change soil chemistry and microbial communities in ways that alter how much toxic metals plants absorb through their roots. This is concerning for human health because microplastic-contaminated agricultural soil could lead to crops that contain higher levels of dangerous heavy metals.
Microplastics change soil properties, heavy metal availability and bacterial community in a Pb-Zn-contaminated soil
This study found that adding six different types of microplastics to soil contaminated with lead and zinc changed the soil's chemistry, increased the availability of those toxic metals, and shifted the bacterial communities living in the soil. Higher doses of microplastics caused greater disruption, reducing microbial diversity and altering nutrient cycling. The findings suggest that microplastics in contaminated soil could make heavy metals more likely to enter plants and the food chain.
Bacterial community in the buckwheat rhizosphere responds more sensitively to single microplastics in lead-contaminated soil compared to the arbuscular mycorrhizal fungi community
Researchers examined how polyethylene and polylactic acid microplastics, combined with lead contamination, affect buckwheat rhizosphere microbial communities. They found that bacterial communities responded more sensitively to microplastic exposure than arbuscular mycorrhizal fungi, with microplastics altering soil bacterial diversity and composition even at low concentrations. The study suggests that microplastics in heavy metal-contaminated agricultural soils may disrupt the beneficial microbial communities that support crop growth.
Potential Effects of Microplastic on Arbuscular Mycorrhizal Fungi
This review examines how microplastics in soil affect arbuscular mycorrhizal fungi, finding evidence that microplastics can alter fungal colonization of plant roots, spore production, and the broader soil microbiome, with cascading effects on plant nutrient uptake.
Microplastics in Mediterranean Agricultural Soils: Effects on Soil Properties, Metal Accumulation in Plants, and Implications for Sustainable Agroecosystems
Scientists found that tiny plastic particles in soil make it easier for toxic metals like lead and zinc to move into plants we might eat. Even small amounts of microplastics changed how metals behave in the soil, with some types of plastic causing up to 20% more metal absorption in plants. This matters because these contaminated plants could end up in our food supply, potentially increasing our exposure to harmful metals.
Influence of soil microplastic contamination on maize (Zea mays) development and microbial dynamics
Researchers grew maize (corn) in soil contaminated with varying amounts of microplastics and found that higher microplastic levels disrupted soil bacteria and fungi, caused leaf damage like yellowing and tissue death, and led to elevated heavy metals in plant tissue above safe limits. The results point to serious risks microplastics pose to crop health, soil ecosystems, and food safety.
Responses of Sorghum Growth and Rhizosphere–Plastisphere Microbiomes to Cadmium and Polypropylene Microplastic Co-Contamination
Researchers examined how combined cadmium and polypropylene microplastic contamination affects sorghum growth and the bacterial communities in both rhizosphere soil and on the plastic surfaces. They found that co-contamination inhibited sorghum development more severely than either pollutant alone, and the bacterial community on the plastic surface was structurally simpler with lower diversity than in surrounding soil. The study suggests that microplastics in contaminated soils can serve as distinct microbial habitats that differ significantly from the native soil environment.
Effects of microplastics on cadmium accumulation by rice and arbuscular mycorrhizal fungal communities in cadmium-contaminated soil
Researchers studied how three types of microplastics interact with cadmium contamination in rice paddies, examining effects on plant growth, metal uptake, and soil fungal communities. They found that while microplastics generally increased cadmium availability in soil, they actually decreased cadmium accumulation in rice tissues. Notably, biodegradable polylactic acid microplastics caused more harm to plant growth and soil communities than conventional plastic types, challenging the assumption that biodegradable plastics are always safer.
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.
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.
Aging microplastic aggravates the pollution of heavy metals in rhizosphere biofilms
Researchers found that aging microplastics aggravate heavy metal pollution in rhizosphere biofilms, with weathered MPs accumulating more metals and altering microbial community structure in the root zone, potentially increasing contaminant transfer to plants.
Effects of naturally aged microplastics on arsenic and cadmium accumulation in lettuce: Insights into rhizosphere microecology
Researchers studied how naturally aged microplastics in soil affect the uptake of arsenic and cadmium by lettuce. At low concentrations, microplastics actually reduced heavy metal absorption and helped plant growth, but at higher concentrations they increased the amount of toxic metals taken up by the lettuce. This means microplastic-contaminated farmland could lead to higher levels of heavy metals in salad greens and other vegetables that people eat.
Effects of combined microplastic and cadmium pollution on sorghum growth, Cd accumulation, and rhizosphere microbial functions
Researchers examined how different types and sizes of microplastics interact with cadmium, a toxic heavy metal, to affect sorghum growth and soil microbes. They found that the combined pollution generally increased plant stress and cadmium uptake, with effects varying by plastic type, particle size, and concentration. The study also revealed that the pollution mixture significantly altered soil bacterial communities and key metabolic pathways involved in nutrient cycling.
Potential impacts of polyethylene microplastics and heavy metals on Bidens pilosa L. growth: Shifts in root-associated endophyte microbial communities
Researchers found that polyethylene microplastics in soil contaminated with heavy metals significantly stunted plant growth, reducing root length by nearly 49% and increasing harmful reactive oxygen species in plant tissues. The microplastics also shifted the soil's microbial communities toward stress-resistant species, demonstrating how plastic pollution can disrupt the soil ecosystem that supports our food supply.
Effects of microplastic types and shapes on the community structure of arbuscular mycorrhizal fungi in different soil types
Researchers examined how different types and shapes of microplastics affect arbuscular mycorrhizal fungi communities across various soil types. The study found that microplastics alter soil structure and chemistry in ways that disrupt these beneficial fungi, which play crucial roles in nutrient exchange, soil stability, and water movement.
Nitrogen fertilization and arbuscular mycorrhizal fungi do not mitigate the adverse effects of soil contamination with polypropylene microfibers on maize growth
Researchers tested whether adding nitrogen fertilizer or beneficial soil fungi could offset the negative effects of polypropylene microfibers on maize plants. They found that neither nitrogen supplementation nor mycorrhizal fungi helped the plants overcome the growth reductions caused by microplastic contamination. The study suggests that microplastics harm crops through mechanisms beyond simple nutrient limitation, and that conventional farming practices may not be sufficient to counteract microplastic damage to soil health.
Potential impacts of two types of microplastics on Solanum lycopersicum L. and arbuscular mycorrhizal fungi
Researchers investigated the potential impacts of two types of microplastics on tomato (Solanum lycopersicum) plants and arbuscular mycorrhizal fungi, examining how plastic pollution may disrupt plant-fungal symbiotic relationships in agricultural soils.