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20 resultsShowing papers similar to Molecular Trojan Effect of Microplastic Diethyl Phthalate Drives Multiscale Stress Vortex through Interfacial Engineering in Cold Agroecosystems during Freeze–Thaw Cycles
ClearFreeze–ThawCycles Accelerate Plastic PollutionInvasion in Agriculture: Trojan Horse Effect of Microplastic–PlasticizerContamination Revealed in Rye via Computational Chemistry and Multiomics
Using hydroponic rye as a model, researchers showed that freeze-thaw cycles dramatically increased diethyl phthalate uptake into plants in the presence of microplastics, with the plasticizer boosting microplastic surface charge and facilitating plant entry. Transcriptomic and computational analyses revealed disruption of gene networks governing growth and stress response.
Freeze–Thaw Cycles Accelerate Plastic Pollution Invasion in Agriculture: Trojan Horse Effect of Microplastic–Plasticizer Contamination Revealed in Rye via Computational Chemistry and Multiomics
Researchers found that climate change-related freeze-thaw cycles significantly worsen the combined toxicity of the plasticizer DEP and microplastics in rye plants. Freeze-thaw conditions increased microplastic uptake into plants by altering particle surface charge, while DEP bound to key plant proteins and inhibited photosynthesis. The study reveals that microplastics simultaneously acted as carriers for the plasticizer while reshaping root microbiomes to favor pollutant-degrading bacteria.
Toxicity of Polystyrene Nanoplastics and Tributyl Phosphate to Rye under Freeze–Thaw Cycles: Implications for Crop Safety and Mechanistic Insights from Transcriptome and Root Microbiome
Researchers exposed rye to combined polystyrene nanoplastics and the plasticizer tributyl phosphate under simulated freeze-thaw cycles, finding that cold cycling intensifies oxidative stress and photosynthesis suppression by promoting physicochemical complex formation between pollutants, restructuring root endophytic microbiomes, and activating jasmonic acid and abscisic acid defense signaling pathways.
TheOverlooked Driver of Microplastic Chemical Oxidationin Cold Soils: Reactive Oxygen Species Generation Mediated by Freeze–ThawCycles
Researchers found that freeze-thaw cycles drive the oxidative aging of aromatic microplastics — including PET, PLA-PBAT, and polystyrene — in cold soils by generating reactive oxygen species such as singlet oxygen and hydrogen peroxide, a mechanism absent in non-aromatic polymers like polyethylene and polyamide.
Vulnerability of Brassica oleracea L. (cabbage) grown in microplastic-contaminated soil to extreme climatic events associated with freeze-thaw
Researchers grew cabbage seedlings in soils with 0–10% microplastic contamination, then subjected them to freeze-thaw events at -2.5°C and -3.5°C to simulate climate extremes. Although MPs did not significantly change baseline growth, they altered physiological responses to freezing, suggesting that soil microplastic pollution can modify plant vulnerability to climate-driven temperature stress.
Freeze-thaw differentially modulates the impact of agricultural film-derived microplastics on soil-crop system: Microbiome and metabolome responses
This study investigated how freeze-thaw cycling alters the properties and phytotoxicity of agricultural film-derived microplastics in soil, using both microbiome and metabolome analyses in wheat and soil systems. Freeze-thaw aging changed MP surface chemistry and differentially altered microbial community composition and plant metabolic responses compared to un-aged MPs.
Freeze-thaw aged polyethylene and polypropylene microplastics alter enzyme activity and microbial community composition in soil
This study found that when polyethylene and polypropylene microplastics go through freeze-thaw cycles (as they would in cold-climate soils), their surfaces change in ways that alter soil enzyme activity and shift microbial communities. These findings matter because changes in soil microbes can affect nutrient cycling and crop health, with potential downstream effects on human food systems.
Freeze-thaw alternations accelerate plasticizers release and pose a risk for exposed organisms
Researchers investigated how freeze-thaw cycles in agricultural soils of Liaoning, China accelerate the release of phthalate ester (PAE) plasticizers from plastic mulch film residues and microplastics. They found that freeze-thaw alternations significantly increased PAE leaching and that bioaccumulation in exposed organisms poses a potential ecotoxicological risk in cold agricultural regions.
Effects of freeze-thaw dynamics and microplastics on the distribution of antibiotic resistance genes in soil aggregates
Researchers investigated how freeze-thaw cycles and microplastics together affect the spread of antibiotic resistance genes in soil. The study found that repeated freezing and thawing significantly increased antibiotic resistance genes across different soil particle sizes. Interestingly, the presence of polyethylene microplastics actually reduced some of the resistance gene increases caused by freeze-thaw, suggesting a complex interaction between these two environmental stressors.
Mechanism of nanoplastics altering soil carbon turnover under freeze-thaw cycle
Researchers used rare earth oxide tracers and carbon-13 isotope labeling combined with soil microstructure scanning CT to study how nanoplastics alter soil carbon cycling under freeze-thaw conditions. Nanoplastics destabilized soil aggregates during freeze-thaw cycles, accelerating organic carbon turnover and potentially increasing CO2 emissions from cold-region soils.
Freeze-thaw aging increases the toxicity of microplastics to earthworms and enriches pollutant-degrading microbial genera
This study found that microplastics aged by freeze-thaw cycles, which happen naturally in cold climates, became more toxic to earthworms than fresh microplastics. The aged particles caused more oxidative stress and disrupted the worms' gut bacteria and metabolism. Since earthworms are essential for soil health and agriculture, this increased toxicity could affect the quality of soil used to grow food.
Integrated multi-omics reveals rye seedling responses to nanoplastic and freeze-thaw stress
Researchers used an integrated multi-omics approach to study how rye seedlings respond to the combined stress of polystyrene nanoplastics and freeze-thaw cycles. The study found that the combination produced the strongest physiological stress responses, including elevated oxidative damage markers and significant shifts in root microbial communities, with transcriptomic analysis revealing over 6,000 differentially expressed genes related to oxidative stress and energy metabolism.
Metabolomic insights into the synergistic effects of nanoplastics and freeze-thaw cycles on Secale cereale L. seedling physiology
Researchers exposed rye seedlings simultaneously to polystyrene nanoplastics and simulated freeze-thaw cycles, finding that the combination amplified oxidative stress, inhibited photosynthesis, and disrupted core metabolic pathways — including the TCA cycle and lipid metabolism — more severely than either stressor alone.
Microplastics in soil–plant systems: impacts on soil health, plant toxicity, and multiomics insights
This review synthesizes current knowledge on how microplastics affect soil health and plant growth in agricultural systems, with insights from advanced omics technologies. Researchers found that microplastics degrade soil structure, disrupt nutrient cycles, alter microbial communities, and can be taken up by plant roots, triggering oxidative stress and impaired growth. The study highlights how transcriptomics, metabolomics, and proteomics are revealing the molecular-level stress responses plants mount against microplastic exposure.
Revealing the Freezing-Induced Alteration in Microplastic Behavior and Its Implication for the Microplastics Released from Seasonal Ice
Researchers revealed how freeze-thaw cycling alters microplastic behavior in environmental matrices, finding that freezing changes particle aggregation, surface properties, and transport dynamics with implications for polar and seasonally frozen environments.
The Overlooked Driver of Microplastic Chemical Oxidation in Cold Soils: Reactive Oxygen Species Generation Mediated by Freeze–Thaw Cycles
Researchers found that freeze-thaw cycles selectively oxidize microplastics containing conjugated aromatic structures such as PET and polystyrene through reactive oxygen species generation during the initial freezing phase, while non-aromatic polymers like polyethylene and polyamide undergo no oxidative aging under the same conditions.
Multi‐Omics Insights Into Phenylpropanoid and Lipid Barrier Biosynthesis in Maize Roots Under Salt and Microplastic Stresses
Researchers used transcriptomic and metabolomic analyses to investigate how polystyrene microplastics and salt stress — individually and in combination — affect phenylpropanoid and lipid barrier biosynthesis in maize seedling roots, finding that combined stresses alter molecular defence pathways in ways distinct from either stressor alone.
Response of wheat (Triticum aestivum L. cv.) to the coexistence of micro-/nanoplastics and phthalate esters alters its growth environment
Researchers studied how wheat responds to co-existing stressors of microplastics and another soil contaminant, finding that combined exposure altered plant growth, physiological parameters, and grain quality compared to single-stressor exposures. The results highlight the importance of testing contaminant mixtures in agricultural soils.
Mobility of polypropylene microplastics in stormwater biofilters under freeze-thaw cycles
Researchers discovered that freeze-thaw cycles move deposited microplastics deeper into stormwater biofilter soil than simple drying-and-wetting cycles, because expanding ice crystals break up the soil and release trapped particles. This finding suggests that in cold climates, microplastics filtered from stormwater could migrate further underground than previously estimated.
Unveiling the mechanism of micro-and-nano plastic phytotoxicity on terrestrial plants: A comprehensive review of omics approaches.
This comprehensive review examined how micro-and-nano plastics (MNPs) in terrestrial soils damage plant health by inhibiting water and nutrient uptake, reducing seed germination, impairing photosynthesis, and inducing oxidative stress. The review identified key knowledge gaps in understanding MNP phytotoxicity mechanisms and their implications for food security.