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61,005 resultsShowing papers similar to Tissue-specific responses of duckweed to cadmium stress under nanoplastic co-exposure: differential accumulation and toxicity in roots and fronds
ClearInfluence of cadmium and microplastics on physiological responses, ultrastructure and rhizosphere microbial community of duckweed
Researchers studied the combined effects of cadmium and polyethylene and polypropylene microplastics on duckweed, an aquatic plant. Interestingly, the study found that microplastics combined with cadmium actually reduced the heavy metal's toxicity to the plant compared to cadmium exposure alone, while also increasing the diversity of beneficial microbes in the root zone.
Single and combined effects of polystyrene nanoplastics and Cd on submerged plants Ceratophyllum demersum L.
Researchers studied the combined effects of nanoplastics and cadmium, a toxic heavy metal, on the aquatic plant Ceratophyllum demersum. They found that nanoplastics worsened cadmium's harmful effects on plant growth, photosynthesis, and cellular health, reducing growth rates by over 35%. The study suggests that when nanoplastics and heavy metals co-occur in water, their combined impact on aquatic plants may be more severe than either pollutant alone.
Polystyrene nanoplastics distinctly impact cadmium uptake and toxicity in Arabidopsis thaliana
In a study using the model plant Arabidopsis, polystyrene nanoplastics increased the uptake and accumulation of the toxic heavy metal cadmium in plant roots. The combined stress of nanoplastics and cadmium caused worse oxidative damage and growth problems than either pollutant alone. This is concerning because it means microplastics in agricultural soil could help toxic metals get into crops more easily, potentially increasing human exposure through food.
Nanoplastics inDuckweed: Single-Cell Responses andRecovery
This study examined how polystyrene nanoplastics affect duckweed at the single-cell level, documenting photosynthetic disruption and oxidative stress, as well as partial recovery after exposure ceased. The results indicate aquatic macrophytes have some resilience to nanoplastic stress but can sustain lasting cellular damage at higher doses.
Assessing heterogeneous pollution risks from polystyrene micro(nano)plastics and cadmium to physiology and biochemistry in parsley via a split-root system
Researchers used a split-root system to study how polystyrene micro- and nanoplastics interact with cadmium to affect parsley growth under conditions mimicking real-world uneven soil contamination. They found that cadmium was the primary driver of root damage and oxidative stress, but these effects remained localized to the contaminated side, suggesting the plant can isolate damage. Excessive nanoplastics combined with cadmium on both sides of the root system triggered defense mechanisms that altered the plant's production of beneficial bioactive compounds.
Responses of individual and combined polystyrene and polymethyl methacrylate nanoplastics on hormonal content, fluorescence/photochemistry of chlorophylls and ROS scavenging capacity in Lemna minor under arsenic-induced oxidative stress
Researchers exposed duckweed plants to polystyrene and polymethyl methacrylate nanoplastics under arsenic-induced stress and measured effects on hormones, photosynthesis, and antioxidant responses. They found that nanoplastics altered how plants responded to arsenic toxicity, with some combinations reducing oxidative damage while others worsened it. The study reveals that nanoplastic interactions with heavy metals in plants are complex and depend on the specific plastic type involved.
Effects of microplastics and cadmium on growth rate, photosynthetic pigment content and antioxidant enzymes of duckweed (Lemma minor)
Researchers examined the combined effects of polyethylene microplastics and cadmium on duckweed growth, photosynthesis, and antioxidant enzyme activity. The study found that microplastics at 50 mg/L caused the most severe growth inhibition and highest cadmium bioaccumulation in duckweed, while antioxidant enzymes showed complex dose-dependent responses suggesting that microplastics can alter heavy metal toxicity in aquatic plants.
Do Polystyrene Nanoplastics Have Similar Effects on Duckweed (Lemna minor L.) at Environmentally Relevant and Observed-Effect Concentrations?
Researchers compared the effects of polystyrene nanoplastics on duckweed (Lemna minor) at environmentally relevant concentrations versus the higher observed-effect concentrations typically used in studies. The study found that both positively and negatively charged nanoplastics produced different biological responses depending on concentration levels. The findings highlight the importance of testing at environmentally realistic concentrations to accurately assess nanoplastic risks to aquatic plants.
Single and combined toxicity of polystyrene nanoplastics and PCB-52 to the aquatic duckweed Spirodela polyrhiza
Researchers found that polystyrene nanoplastics and PCB-52 act synergistically to impair the aquatic plant Spirodela polyrhiza, with combined exposure amplifying oxidative stress, chlorophyll loss, and osmotic imbalance in roots beyond what either pollutant caused alone — while low nanoplastic doses alone mildly stimulated growth.
Altered biotoxicity of cadmium to freshwater green algae by different concentrations of polystyrene
Polystyrene microplastics at low concentrations partially reduced cadmium toxicity to freshwater green algae, while higher concentrations exacerbated it, demonstrating that combined pollution effects on algae are concentration-dependent.
The impacts of nanoplastic toxicity on the accumulation, hormonal regulation and tolerance mechanisms in a potential hyperaccumulator - Lemna minor L.
Researchers studied the toxic effects of polystyrene nanoplastics on the freshwater plant Lemna minor, a species used extensively in phytoremediation. The study found that nanoplastic exposure affected plant growth and triggered hormonal responses, while also revealing tolerance mechanisms that the plant employs to cope with nanoplastic stress.
Nanoplastics in Duckweed: Single-Cell Responses and Recovery
This study investigated the effects of polystyrene nanoplastics on duckweed (Lemna) at the single-cell level, finding dose-dependent disruption of photosynthesis and oxidative stress responses. Notably, duckweed showed partial recovery after nanoplastic exposure ended, indicating some resilience in aquatic macrophytes.
Effect of cadmium and polystyrene nanoplastics on the growth, antioxidant content, ionome, and metabolism of dandelion seedlings
This study examined how polystyrene nanoplastics interact with cadmium, a toxic heavy metal, and found that the combination worsened the toxic effects on dandelion seedlings beyond what either pollutant caused alone. The findings highlight that nanoplastics can change how heavy metals behave in the environment, potentially increasing the amount of toxic metals that enter the food chain through contaminated plants.
Transcriptomic and Functional Analyses of Two Cadmium Hyper-Enriched Duckweed Strains Reveal Putative Cadmium Tolerance Mechanisms
Not directly relevant to microplastics — this study uses transcriptomics to investigate how duckweed tolerates and accumulates cadmium, exploring potential mechanisms for heavy-metal phytoremediation.
Do polystyrene nanoplastics affect the toxicity of cadmium to wheat (Triticum aestivum L.)?
Researchers investigated whether polystyrene nanoplastics affect the toxicity of cadmium to wheat plants. The study found that nanoplastics could alter how cadmium interacts with wheat, potentially modifying the uptake and toxic effects of the heavy metal, suggesting that the co-occurrence of nanoplastics and heavy metals in agricultural soils may create complex interactions affecting crop health.
Physiological responses of Lemna minor to polystyrene and polymethyl methacrylate microplastics
Researchers exposed duckweed plants to two types of microplastics — polystyrene (PS) and polymethyl methacrylate (PMMA) — and found surprisingly opposite effects: PS microplastics actually promoted plant growth, while PMMA microplastics damaged chloroplasts and stunted growth, showing that plastic type matters greatly for environmental harm.
Antagonistic effect of polystyrene nanoplastics on cadmium toxicity to maize (Zea mays L.)
Researchers studied the combined effects of polystyrene nanoplastics and cadmium on maize plants and found that nanoplastics actually reduced cadmium toxicity. The study suggests that nanoplastics can adsorb cadmium and limit its uptake by plant roots, though both contaminants individually reduced plant growth and triggered oxidative stress responses.
Effect of cadmium on polystyrene transport in parsley roots planted in a split-root system and assessment of the combined toxic effects
Researchers used a split-root system to study how cadmium affects the movement of polystyrene micro and nanoplastics in parsley plants. They found that plastic nanoparticles traveled through the plant's internal transport system from contaminated roots to clean roots, but cadmium reduced this movement by changing the plastics' surface charge. The study shows that in contaminated soil, heavy metals and microplastics interact in complex ways that affect how much plastic ends up in edible crops.
Potential synergistic effect of polystyrene nanoplastics on cadmium toxicity to Sedum alfredii Hance
**TLDR:** Scientists found that tiny plastic particles (nanoplastics) make the toxic metal cadmium even more dangerous when both pollutants are present in soil together. Plants exposed to both nanoplastics and cadmium absorbed much more of the poisonous cadmium than plants exposed to cadmium alone. This matters because these pollutants are increasingly common in our environment, and if plants take up more toxins, they could end up in our food supply.
Synergistic Effects of Polystyrene Nanoplastics and Cadmium on the Metabolic Processes and Their Accumulation in Hydroponically Grown Lettuce (Lactuca sativa)
When lettuce was grown with both nanoplastics and the toxic metal cadmium, the plants absorbed 61-67% more of both contaminants compared to exposure to either one alone. The combined pollution triggered a stronger stress response in the plants and changed how they grew. This is concerning for human health because it means nanoplastics in agricultural soil could significantly increase the amount of toxic heavy metals that end up in salad greens and other food crops.
Effects of Co-Contamination of Microplastics and Cd on Plant Growth and Cd Accumulation
Researchers investigated how two types of microplastics, high-density polyethylene and polystyrene, at various concentrations affect cadmium uptake and toxicity in maize plants grown in agricultural soil. The study found that while polyethylene alone had no significant effect, polystyrene at higher doses altered cadmium accumulation patterns, suggesting that different plastic types may interact differently with heavy metals in soil.
Phytotoxicity of microplastics to the floating plant Spirodela polyrhiza (L.): Plant functional traits and metabolomics
Researchers exposed the aquatic plant duckweed to PVC microplastics and found that high concentrations severely stunted root growth by 42% and leaf reproduction by 61%. The microplastics disrupted the plant's carbon, nitrogen, and lipid metabolism, interfering with its ability to accumulate nutrients. Since aquatic plants are important for water ecosystems and can enter human food chains, this damage could have ripple effects on water quality and food safety.
Synergistic Effectsof Polystyrene Nanoplastics andCadmium on the Metabolic Processes and Their Accumulation in HydroponicallyGrown Lettuce (Lactuca sativa)
Hydroponically grown lettuce co-exposed to cadmium and polystyrene nanoplastics accumulated 61% more cadmium and more nanoplastics than singly-exposed plants, with combined exposure causing greater oxidative stress and growth inhibition.
Effect of microplastics treated with heavy metals on physiological and biochemical stress parameters in duckweed (Lemna minor)
Researchers investigated the effects of heavy metal-treated microplastics (a mixture of polyethylene, polypropylene, and polystyrene) on physiological and biochemical stress parameters in marine organisms, finding that metal-contaminated microplastics altered stress responses compared to untreated plastic particles. The study highlights how abiotic weathering of microplastics can increase their ecotoxicological hazard through metal co-contamination.