We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Effects of microplastics on arsenic uptake and distribution in rice seedlings
ClearMicroplastic mediated arsenic toxicity involves differential bioavailability of arsenic and modulated uptake in rice (Oryza sativa L.)
Researchers examined how polyethylene and polylactic acid microplastics interact with arsenic contamination in rice paddies. They found that at low arsenic levels, microplastics actually reduced arsenic uptake by rice plants, but at high arsenic concentrations the combination produced synergistic toxic effects. The study reveals that the interaction between microplastics and heavy metals in agricultural soils is more complex than previously thought and depends heavily on contaminant concentration levels.
Microplastic particles increase arsenic toxicity to rice seedlings
Researchers studied how polystyrene and polytetrafluoroethylene microplastics interact with arsenic to affect rice seedling growth. They found that microplastics alone reduced plant biomass and inhibited photosynthesis, while the combination with arsenic at higher concentrations amplified the toxic effects on root activity and cell membranes. The study reveals that microplastic contamination in agricultural settings may worsen the impact of other pollutants on food crops.
Uptake and translocation of nano/microplastics by rice seedlings: Evidence from a hydroponic experiment
In a hydroponic experiment, researchers showed that both nano-sized (80 nm) and micro-sized (1 micrometer) polystyrene particles were absorbed by rice plant roots and transported up into stems and leaves. The particles traveled through the plant's vascular system and accumulated in cell walls and between cells. This finding is concerning because it demonstrates that microplastics in soil and water can enter food crops like rice and potentially reach people through their diet.
Microplastics change the safe production ability of arsenic-stressed rice (Oryza sativa L.) by regulating the antioxidant capacity, arsenic absorption, and distribution in rice
Researchers studied how polyethylene and biodegradable polylactic acid microplastics interact with arsenic contamination to affect rice growth and food safety. They found that the type of microplastic influenced how arsenic accumulated in different parts of the rice plant, with some combinations increasing arsenic levels in the edible grain. The findings raise concerns about microplastic contamination in agricultural soils altering how toxic metals are taken up by food crops.
Mechanistic insight into interactive effect of microplastics and arsenic on growth of rice (Oryza sativa L.) and soil health indicators
Researchers tested how different types of microplastics interact with arsenic contamination in rice paddy soil, finding that biodegradable PLA microplastics actually increased arsenic uptake by rice plants by up to 39%. In contrast, conventional polyethylene microplastics slightly reduced arsenic absorption. This is an important finding because as agriculture shifts toward biodegradable plastics, they may inadvertently increase the transfer of toxic heavy metals from soil into food crops.
A novel mechanism study of microplastic and As co-contamination on indica rice (Oryza sativa L.)
Researchers used pot experiments and computational chemistry to study how polystyrene and polytetrafluoroethylene microplastics affect arsenic uptake in rice plants. They found that both types of microplastics interacted with rice root compounds and influenced how much arsenic the plants absorbed from contaminated soil. The study reveals a previously unknown mechanism by which microplastic pollution in agricultural soils could increase toxic metal accumulation in a major food crop.
Effects of different size polylactic acid on arsenic migration and rhizosphere microorganisms in soil-rice system
Researchers found that polylactic acid (PLA), a common biodegradable microplastic, increased the availability of toxic arsenic in rice paddies by changing soil chemistry and promoting bacteria that convert arsenic into more dangerous forms. Nano-sized PLA particles were particularly harmful, promoting arsenic uptake into rice plants, while larger particles actually blocked it. This study is important for food safety because it shows that even biodegradable plastics in agricultural soil can increase toxic contamination in rice, a staple food for billions of people.
The adsorption of arsenic on micro- and nano-plastics intensifies the toxic effect on submerged macrophytes
Researchers investigated how arsenic adsorbs onto microplastics of varying types and sizes, and how those particles affect underwater plants. They found that nanoplastics increased arsenic absorption in aquatic macrophytes by 36-47%, causing more severe leaf damage and oxidative stress than either contaminant alone.
Size-dependent effects of polystyrene micro- and nanoplastics on the quality of rice grains and the metabolism mechanism
Researchers found that tiny polystyrene plastic particles (under 100 nanometers) were absorbed by rice roots and traveled up into the grain, reducing protein content by up to 29%. The smallest particles weakened the plant's natural defenses by disrupting sugar metabolism. This means microplastics in soil could be silently lowering the nutritional quality of rice that people eat.
Micro-nanoscale polystyrene co-exposure impacts the uptake and translocation of arsenic and boscalid by lettuce (Lactuca sativa)
Researchers found that nanoscale polystyrene particles dramatically increase arsenic translocation from roots to edible shoots of lettuce — up to threefold — while also entering root cells and migrating to leaves, demonstrating that microplastic co-exposure can substantially amplify the accumulation of other environmental contaminants in food crops.
Uptake of microplastics by carrots in presence of As (III): Combined toxic effects
Researchers found that polystyrene microplastics as small as 0.2 micrometers can enter carrot roots and travel up to the leaves, and the presence of arsenic in water made the problem worse by allowing even larger particles to penetrate plant cells. The combination of microplastics and arsenic caused oxidative damage and reduced carrot quality, including loss of crispness. This study shows that root vegetables grown in contaminated water could absorb microplastics directly into the parts that people eat.
Effects of polyethylene and biodegradable microplastics on photosynthesis, antioxidant defense systems, and arsenic accumulation in maize (Zea mays L.) seedlings grown in arsenic-contaminated soils
This study tested how polyethylene and biodegradable microplastics affect maize seedlings grown in arsenic-contaminated soil. Both types of microplastics changed how much arsenic the plants absorbed, with biodegradable microplastics increasing arsenic uptake in roots and shoots. The findings suggest that microplastic pollution in farmland could alter how crops absorb toxic substances, potentially affecting food safety.
Mechanistic insight into the intensification of arsenic toxicity to rice (Oryza sativa L.) by nanoplastic: Phytohormone and glutathione metabolism modulation
Nanoplastics at environmentally realistic levels did not harm rice plants on their own, but when combined with arsenic they made arsenic toxicity significantly worse, reducing plant growth by up to 23%. The nanoplastics increased arsenic uptake by disrupting plant hormones and weakening the plant's natural detoxification systems. This is concerning because rice is a staple food for billions of people, and agricultural soils increasingly contain both nanoplastics and heavy metals.
The combined toxicity of polystyrene microplastic and arsenate: From the view of biochemical process in wheat seedlings (Triticum aestivum L.)
Researchers found that when wheat seedlings were exposed to both arsenic and polystyrene microplastics together, the microplastics reduced arsenic uptake in roots but dramatically increased arsenic transport to the above-ground parts of the plant — by up to 1,000%. This combined exposure caused more oxidative stress and damage to the plants' photosynthetic systems than arsenic alone. The findings suggest that microplastics in contaminated soil could increase how much toxic metal ends up in the edible parts of crops.
Effect of foliar and root exposure to polymethyl methacrylate microplastics on biochemistry, ultrastructure, and arsenic accumulation in Brassica campestris L.
Researchers found that root exposure to polymethyl methacrylate microplastics caused stronger physiological damage in rapeseed, while foliar exposure increased arsenic accumulation by up to 76%, revealing route-dependent phytotoxicity.
Understanding the Role of Low-Dose Polystyrene Microplastic in Copper Toxicity to Rice Seed (Oryza sativa L.)
This study explored how polystyrene microplastics interact with copper toxicity in rice seeds. Researchers found that microplastics actually reduced copper's harmful effects by physically accumulating on seed coats and blocking copper absorption, lowering the amount of copper taken up by seedlings by about 34%. The findings highlight how microplastics can alter the way other environmental contaminants affect plants.
Effects of microplastic on arsenic accumulation in Chlamydomonas reinhardtii in a freshwater environment
Researchers found that polystyrene microplastics of two sizes disrupted phospholipid membrane structure in the microalga Chlamydomonas reinhardtii, reducing its ability to accumulate and detoxify arsenic in freshwater. Smaller 100 nm particles caused greater inhibition of arsenic uptake and the detoxification pathway than 5 µm particles, indicating that nanoplastic size amplifies toxicological impacts on arsenic biogeochemical cycling.
Effects of Microplastics on the Mineral Elements Absorption and Accumulation in Hydroponic Rice Seedlings (Oryza sativa L.)
Researchers exposed rice seedlings to different concentrations of polyethylene microplastics in hydroponic conditions and measured the effects on mineral nutrient absorption. They found that while microplastics did not affect shoot growth, they significantly altered the uptake and distribution of essential mineral elements in the plants. The study suggests that microplastic contamination in agricultural settings could disrupt crop nutrition even without visible growth impacts.
Polyethylene Nanoplastics Intensify Arsenic Toxicity in Lettuce by Altering Arsenic Accumulation and Stress Pathways
Researchers grew lettuce in arsenic-contaminated farmland soil amended with polyethylene nanoplastics and found that nanoplastic exposure increased arsenic accumulation in edible leaves by 35–39%, reduced plant biomass by up to 30%, and disrupted antioxidant metabolism, highlighting compounded food safety risks in contaminated agricultural soils.
Response of rice (Oryza sativa L.) roots to nanoplastic treatment at seedling stage
Researchers exposed rice seedlings to polystyrene nanoplastics and found that the particles were taken up by the roots, aided by water-transporting proteins in the plant. The nanoplastics triggered oxidative stress, reduced root length, and disrupted carbon metabolism and hormone production in the seedlings. The study raises concerns that nanoplastic contamination in agricultural soils could affect crop growth and potentially enter the human food supply through rice consumption.
Single and joint toxicity of polymethyl methacrylate microplastics and As (V) on rapeseed (Brassia campestris L.)
Researchers evaluated the individual and combined toxicity of polymethyl methacrylate microplastics and arsenic on rapeseed plants. They found that nanoscale plastic particles were more toxic than microscale ones, and the combination of nanoplastics with arsenic produced synergistic harmful effects on germination, growth, and arsenic accumulation in plant tissues. The study raises concerns about the combined impact of microplastics and heavy metals on crop safety in contaminated farmland.
Effects of microplastics on growth and metabolism of rice (Oryza sativa L.)
Researchers found that polystyrene and polyvinyl chloride microplastics inhibited rice growth and disrupted ionic homeostasis and antioxidant metabolism in a dose-dependent manner, with PVC microplastics causing more severe effects than polystyrene.
Uptake and distribution of microplastics of different particle sizes in maize (Zea mays) seedling roots
Researchers studied how maize seedling roots take up polystyrene microplastic beads of different sizes and found that smaller particles were absorbed more readily than larger ones. Particles as small as 0.2 micrometers were detected in both roots and shoots, with the root tip being the primary uptake zone. The findings confirm that microplastics can enter food crops through their root systems, raising questions about food safety.
Single and combined toxicity of polystyrene nanoplastics and arsenic on submerged plant Myriophyllum verticillatum L.
Researchers investigated the combined toxicity of polystyrene nanoplastics and arsenic on the submerged aquatic plant Myriophyllum verticillatum. They found that nanoplastics reduced arsenic accumulation in the plant by 17 to 67 percent, and that the interaction between the two contaminants was dose-dependent, with nanoplastics alleviating arsenic toxicity at low doses but worsening it at higher concentrations. The study suggests that co-contamination of nanoplastics and heavy metals in freshwater environments may have complex ecological effects.