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Effects of Microbeads and Cadmium on plant development and Arbuscular Mycorrhizal Organisms in Soil
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Researchers investigated how polyethylene and polylactic acid microplastics interact with cadmium contamination in agricultural soil, finding that high-dose PLA increased phytotoxicity and reduced maize biomass, while both plastics altered arbuscular mycorrhizal fungal community structure and raised soil cadmium bioavailability, compounding risks to crop health.
Micro plastics (MPs) have gained attention as new pollutants worldwide, but little is known about how it interacts with metal contamination in soil-plant ecosystems. Here, research looked into how Cadmium (Cd) and Micro plastics, such as polyethylene (PE) and polylactic acid (PLA), affected the growth of plants and the neighborhood of arbuscular mycorrhizal fungi in agricultural Soil. While 10% PLA reduced the total biomass of maize and the amount of chlorophyll in the leaves, PE showed no discernible phytotoxicity. Between PE and Cadmium, there was an important impact on the volume of roots, but likewise, PLA nor Cadmium had an important effect. PE and PLA showed minimal impact on cadmium accumulation in plant tissues, but they increased soil pH and DTPA-extractable cadmium concentrations. Different treatments showed different counts of pandemic and total OTUs. Arbuscular mycorrhizal fungus (AMF) taxa showed a highly variable abundance ratio with Micro plastics and Cadmium. According to the type and dose of Micro plastics, AMF diversity in communities and structure was changed. The dominant AMF genus exhibited but significant interactions with Micro plastics which were further influenced by the presence of Cadmium. Overall, MP sort and quantity, Cadmium and the way it interacts, and the high dose of PLA induced increased phytotoxicity, which changed with the growth of plants and the AMF. In conclusion, coexisting Micro plastics and Cadmium could collectively influence plant function and root symbiosis changes, increasing the dangers to agriculture systems and habitat biodiversity.
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Interactions of microplastics and cadmium on plant growth and arbuscular mycorrhizal fungal communities in an agricultural soil
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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
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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.
Arbuscular mycorrhizal fungi enhance cadmium resistance and reduce translocation in maize: dependence on microplastics concentration
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Researchers found that arbuscular mycorrhizal fungi significantly enhanced cadmium tolerance in maize grown in soils co-contaminated with microplastics and heavy metals, though the protective effect was concentration-dependent — diminishing at higher microplastic loads that altered fungal colonization and root architecture.
Effects of combined microplastic and cadmium pollution on sorghum growth, Cd accumulation, and rhizosphere microbial functions
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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.
Effects of polyethylene microplastics and cadmium co-contamination on the soybean-soil system: Integrated metabolic and rhizosphere microbial mechanisms
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Researchers investigated how polyethylene microplastics and cadmium interact in soybean-soil systems and found that specific microplastic concentrations enhanced cadmium accumulation in roots under moderate contamination. Higher microplastic levels reduced beneficial soil bacteria like Sphingomonas and Bradyrhizobium and suppressed nitrogen-cycling functions. The study demonstrates that microplastics fundamentally alter heavy metal behavior through interconnected plant-metabolite-microbe interactions in agricultural soils.
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