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61,005 resultsShowing papers similar to Editorial: Advances in understanding the interplay of soil carbon, iron, and arsenic transformation
ClearRedox-induced transformation of potentially toxic elements with organic carbon in soil
This review examines how soil organic carbon drives chemical transformations of potentially toxic elements like chromium, arsenic, and thallium through redox reactions. The study highlights that organic carbon's rich redox-active functional groups can both mobilize and immobilize toxic elements depending on conditions, providing important insights for soil remediation strategies.
Bidirectional interference between nanoplastics and arsenic in arbuscular mycorrhizal symbiosis: Reciprocal modulation of uptake, transformation and translocation
Researchers used a dual-compartment culture system to show that nanoplastics and arsenic interfere with each other inside arbuscular mycorrhizal fungi, where nanoplastics reduce arsenic uptake by fungal hyphae while promoting its conversion to less toxic organic forms, and the fungi in turn internalize and translocate nanoplastics — revealing potential for fungal-based remediation of co-contaminated soils.
Arsenic biotransformation in the gut of soil fauna
This review examines how arsenic is biotransformed by gut microbiota in soil fauna such as earthworms, covering both reduction and methylation processes mediated by gut bacteria. The study highlights how these transformations affect arsenic bioavailability, toxicity to the host, and the health of gut microbial communities.
Synergistic Reduction of Arsenic Uptake and Alleviation of Leaf Arsenic Toxicity in Maize (Zea mays L.) by Arbuscular Mycorrhizal Fungi (AMF) and Exogenous Iron through Antioxidant Activity
Researchers studied whether combining a beneficial soil fungus (arbuscular mycorrhizal fungi) with iron supplements could help protect corn plants from arsenic contamination in soil. They found that using both together significantly reduced arsenic uptake in the plants while boosting growth, phosphorus absorption, and antioxidant defenses in the leaves. The study suggests that this combined biological and mineral approach could help make crops safer to grow in arsenic-contaminated farmland.
Editorial: Climate change and/or pollution on the carbon cycle in terrestrial ecosystems
This editorial introduces a research collection examining the interacting effects of climate change and pollution on the carbon cycle in terrestrial ecosystems. It synthesizes contributions exploring how environmental stressors including contaminants influence carbon dynamics, soil processes, and ecosystem function across land-based habitats.
Iron minerals: A frontline barrier against combined toxicity of microplastics and arsenic
Researchers investigated the interactions between microplastics, arsenic, and the iron mineral goethite in soil and their combined effects on wheat germination. They found that while microplastics reduced arsenic accumulation in wheat, the combination of both contaminants still impaired plant growth. The study suggests that goethite can serve as a frontline barrier that mitigates the combined toxicity of microplastics and arsenic in contaminated soils.
Responses of earthworm Metaphire vulgaris gut microbiota to arsenic and nanoplastics contamination
Researchers found that co-exposure to nanoplastics and arsenic significantly altered earthworm gut microbiota composition, with nanoplastics influencing arsenic biotransformation in the gut, revealing previously unknown interactions between these two soil contaminants.
Rhizosphere-triggered viral lysogeny mediates microbial metabolic reprogramming to enhance arsenic oxidation
Researchers analyzed soil samples around rice plant roots and found that viruses living in the soil help bacteria oxidize arsenic more efficiently by transferring arsenic-processing genes between microbes, contributing up to 25% of the total arsenic oxidation activity in the root zone.
Ecological Responses of Maize Rhizosphere to Antibiotics Entering the Agricultural System in an Area with High Arsenicals Geological Background
Researchers investigated how antibiotics from cow manure enter a maize cropping system in an area with naturally high arsenic levels, finding that oxytetracycline and sulfadiazine significantly altered soil nutrient conditions in the rhizosphere while interactions with arsenic and other metals showed no significant differences.
Identifying the Local Influencing Factors of Arsenic Concentration in Suburban Soil: A Multiscale Geographically Weighted Regression Approach
Researchers used advanced geospatial modeling to identify local factors driving arsenic concentration in suburban soils in China's black soil region. The study found that road density, nitrogen levels, and soil texture were the primary influences, with traffic emissions and fertilizer use identified as the main pollution sources.
The mechanism of polystyrene microplastics to affect arsenic volatilization in arsenic-contaminated paddy soils
Researchers investigated how polystyrene microplastics at different concentrations and sizes affect arsenic volatilization in contaminated paddy soils, finding that microplastic addition increased As volatilization by up to 21.8% in highly contaminated soils. The mechanism involved microplastic-driven shifts in bacterial community composition (particularly Proteobacteria, Firmicutes, and Bacteroidetes) and arsM gene expression, alongside changes in arsenic fractionation.
Electrochemically coupled CH4 and CO2 consumption driven by microbial processes
Researchers demonstrated that naturally occurring iron minerals in soil and sediment can mediate a coupled microbial process where methane (CH4) is broken down while carbon dioxide (CO2) is simultaneously captured — essentially using microbes to remove two major greenhouse gases at once under normal temperature conditions. This mechanism, tracked through electrochemical and genetic analysis, offers a potential new engineering approach for greenhouse gas mitigation.
Marine microplastics enhance release of arsenic in coastal aquifer during seawater intrusion process
Researchers found that marine microplastics carried by seawater intrusion into coastal aquifers enhanced arsenic release from sediments, with negatively charged microplastics competing with arsenate for adsorption sites on iron minerals. The study identifies a new environmental risk from the interaction of two major coastal contaminants.
As(III)-oxidizing bacteria alleviate arsenite toxicity via reducing As accumulation, elevating antioxidative activities and modulating ionome in rice (Oryza sativa L.)
Researchers found that inoculating rice plants with arsenic-oxidizing bacteria significantly reduced arsenic accumulation in shoots, improved antioxidant defenses, and rebalanced nutrient uptake, suggesting a promising biological strategy to reduce arsenic stress in paddy agriculture.
Effects of nano- or microplastic exposure combined with arsenic on soil bacterial, fungal, and protistan communities
Researchers studied the combined and individual effects of arsenic and micro- or nanoplastics on soil bacterial, fungal, and protistan communities. The study found that combined pollution distinctly altered the composition of these microbial communities, with protistan communities being particularly sensitive, indicating that the co-occurrence of plastics and heavy metals in soil may have compounding ecological effects.
Enhanced Effect of Phytoextraction on Arsenic-Contaminated Soil by Microbial Reduction
Researchers used microorganisms to improve arsenic extraction efficiency by the hyperaccumulator plant Pteris vittata in contaminated soil, finding that targeted microbial enrichment methods enhanced the plant's ability to take up arsenic. This combined phytoextraction and microbial approach offers improved remediation of arsenic-contaminated soils.
Nano iron oxide closes the gap between climate regulation and food security trade-offs
This study found that applying nano iron oxide to rice paddies can reduce greenhouse gas emissions while maintaining crop yields. Agricultural management practices that reduce environmental footprint are relevant given that plastic mulches and agrochemicals also contribute to microplastic soil contamination.
Regulatory mechanism of microplastics on arsenic bioavailability in a subtropical estuary, China
Researchers investigated the regulatory mechanisms by which microplastics influence arsenic bioavailability in sediments of the Min River estuary, a subtropical estuary in China, finding that microplastic pollution alters the dynamics of bioavailable arsenic through interactions with sediment geochemistry and microbial communities.
Amendments of waste ochre from former coal mines can potentially be used to increase soil carbon persistence
Researchers investigated the use of waste ochre (iron oxy-hydroxide) from former coal mine drainage as a soil amendment to increase organic carbon persistence by enhancing Fe oxide-mediated protection of organic carbon from degradation. Preliminary batch experiments showed ochre reduced the release of organic carbon from soils into solution, suggesting potential agronomic and carbon sequestration benefits from this mine waste valorization approach.
Recent advances on iron bound phosphorus in wetland sediments: characteristics, influencing factors, interactions with organic matter and emerging contaminants
This review synthesizes global data on iron-bound phosphorus in wetland sediments, examining how redox-driven dissolution cycles control phosphorus bioavailability and how emerging contaminants like microplastics interact with iron-phosphorus dynamics in these ecosystems.
Soil metabolomics: Deciphering underground metabolic webs in terrestrial ecosystems
Researchers reviewed how studying the chemical building blocks (metabolites) in soil can reveal how nutrients cycle through ecosystems and how soil health responds to pollution and climate stress. This approach helps scientists better understand the invisible underground networks that keep soils fertile and functioning.
Effect of microplastics and arsenic on nutrients and microorganisms in rice rhizosphere soil
Researchers investigated how polystyrene and polytetrafluoroethylene microplastics interact with arsenic contamination in rice rhizosphere soil. The study found that microplastics reduced arsenic bioavailability and altered microbial communities, while both pollutants together inhibited key soil enzyme activities and reduced available nitrogen and phosphorus, suggesting combined microplastic-arsenic pollution can impair nutrient cycling and crop growth.
Role of Microorganisms in Bioavailability of Soil Pollutants
This review examined the role of soil microorganisms in controlling the bioavailability of soil pollutants, discussing how microbial transformations affect the mobility, toxicity, and ultimate fate of heavy metals, organic contaminants, and other soil hazardous substances.
Mobilization, Speciation, and Transformation of Organic and Inorganic Contaminants in Soil–Groundwater Ecosystems
Not relevant to microplastics — this review covers the mobilization, speciation, and transformation of organic and inorganic contaminants (such as heavy metals and pesticides) in soil and groundwater ecosystems.