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61,005 resultsShowing papers similar to Uptake and ecotoxicity of microplastics of different particle sizes in crop species
ClearThe distribution and impact of polystyrene nanoplastics on cucumber plants
Researchers investigated how polystyrene nanoplastics of four different sizes distribute within cucumber plants and affect root growth and fruit quality. They found that smaller particles accumulated more readily throughout the plant, moving from roots to leaves and fruit, and caused greater disruption to root physiology. The study suggests that nanoplastic contamination in agricultural soils could affect both crop development and food quality.
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.
Physiological responses of lettuce (Lactuca sativa L.) to microplastic pollution
PVC microplastics of two different size ranges had contrasting effects on lettuce roots, with smaller particles stimulating root growth and larger particles having no effect, and smaller particles also reduced photosynthetic efficiency at moderate concentrations. The study suggests that microplastic size is a key variable determining whether effects on crops are stimulatory or inhibitory.
Mitigating microplastic toxicity: How particle size and degrading bacteria influence Cucumis sativus L. seedlings
Researchers tested how polystyrene microplastics of different sizes affect cucumber seedlings and whether adding plastic-degrading bacteria could reduce the damage. Surprisingly, large microplastic particles actually increased plant height and leaf area, while adding degrading bacteria further improved plant growth and enhanced beneficial soil microbial communities. The study suggests that biological degradation strategies using specialized bacteria could help mitigate microplastic pollution in agricultural settings.
Physiological response of cucumber (Cucumis sativus L.) leaves to polystyrene nanoplastics pollution
Researchers exposed cucumber plants to polystyrene nanoplastics of four different sizes and found significant effects on photosynthesis, antioxidant systems, and sugar metabolism in the leaves. Smaller particles tended to reduce chlorophyll and photosynthetic activity, while larger particles triggered stronger oxidative stress responses. The study suggests that nanoplastic contamination in farmland soils could impair crop growth through multiple biochemical pathways.
Mechanistic insights into the size-dependent bioaccumulation and phytotoxicity of polyethylene microplastics in tomato seedlings
Researchers investigated how polyethylene microplastics of different sizes affect tomato seedlings and found that the smallest particles (1-50 micrometers) caused the most severe damage, reducing shoot weight by 42.3% and root length by 55.1%. The study revealed that microplastic uptake and toxicity are strongly size-dependent, with smaller particles more easily absorbed and translocated through plant tissues, triggering significant oxidative stress.
Effects of polyethylene microplastics with different particle sizes on photosynthesis，biomass and root characteristics of maize seedlings
Researchers tested two sizes of polyethylene microplastics (13 μm and 150 μm) on maize seedlings in soil pot experiments and found size-dependent effects on photosynthesis, biomass, and root characteristics, with smaller particles generally causing greater physiological disruption.
Toxic effects of polystyrene nanoplastics during transport and redistribution in distinct plant species: A combined split-root experiment and metabolomic analysis
Researchers used a split-root system to study how polystyrene nanoplastics travel through the root-shoot-root pathway and cause toxicity in cucumber and maize seedlings. The study found that nanoplastics inhibited growth in both exposed and unexposed roots, with cucumber showing greater sensitivity than maize, and metabolomic analysis revealed distinct disruptions in plant metabolism during nanoplastic transport and redistribution.
Effects of polystyrene microplastics on uptake and toxicity of phenanthrene in soybean
This study examined how polystyrene microplastics of different sizes affect soybean plants' uptake of the pollutant phenanthrene. Researchers found that microplastics reduced soybean roots' ability to absorb phenanthrene, but micron-sized particles caused more oxidative damage to roots than nano-sized ones, which paradoxically reduced pollutant uptake further. The study highlights that combined exposure to microplastics and organic pollutants can harm crop plants, with the specific effects depending on plastic particle size.
The short-term effect of microplastics in lettuce involves size- and dose-dependent coordinate shaping of root metabolome, exudation profile and rhizomicrobiome
Researchers exposed lettuce plants to polyethylene plastic particles of four different sizes and concentrations, finding that the plastics altered root chemistry, changed what the roots released into the soil, and shifted the bacteria living around them. The effects depended strongly on particle size, with smaller particles causing different metabolic changes than larger ones. This study shows that microplastics in farm soil can change the biology of food crops from the roots up, potentially affecting both crop health and nutritional quality.
Internalization, physiological responses and molecular mechanisms of lettuce to polystyrene microplastics of different sizes: Validation of simulated soilless culture
This study found that lettuce plants absorb polystyrene microplastics through their roots and transport them to their leaves, with smaller particles (100 nanometers) moving more easily than larger ones. Both sizes reduced plant growth by roughly 38-48% and triggered stress responses including changes in gene expression. These findings raise food safety concerns since microplastics in soil can accumulate in leafy vegetables that people eat.
[Effects of Three Different Types of Microplastics on Cucumber Growth and Nitrogen Utilization].
Researchers conducted a greenhouse pot trial examining the effects of three different microplastic types on cucumber growth and nitrogen utilization, finding that MP presence in soil disrupts normal nitrogen uptake and plant development, with effects varying by polymer type.
The dosage- and size-dependent effects of micro- and nanoplastics in lettuce roots and leaves at the growth, photosynthetic, and metabolomics levels
Researchers studied the effects of polyethylene micro- and nanoplastics on lettuce plants, varying both particle size and concentration. They found that particle size played a pivotal role in influencing plant growth, photosynthetic activity, and metabolic processes, with nanoplastics generally causing more pronounced effects than larger microplastics. The study suggests that the smallest plastic particles pose the greatest risk to crop health by disrupting plant physiology at multiple levels.
[Effects of Microplastics on the Growth, Physiology, and Biochemical Characteristics of Wheat (Triticum aestivum)].
Wheat seedlings were grown in soils spiked with 100 nm and 5 μm polystyrene microplastics, with high concentrations (200 mg/L) significantly inhibiting root and stem elongation, reducing chlorophyll, and altering antioxidant enzyme activity, with smaller nanoplastics showing greater toxicity. The findings demonstrate that microplastic size influences phytotoxicity in a major agricultural crop.
[Effects of Polyethylene Microplastics on the Growth and Quality of Brassica campestris L. in a Three-season Consecutive Cultivation].
Researchers investigated how polystyrene microplastics of four particle size fractions (under 25, 25-48, 48-150, and 150-850 micrometers) affect the growth, development, and nutrient quality of Chinese cabbage (Brassica campestris L.) across three consecutive cultivation seasons in pot experiments, finding significant size-dependent inhibitory effects on plant growth and soil nutrient supply.
Phytotoxic Effects of Polyethylene Microplastics on the Growth of Food Crops Soybean (Glycine max) and Mung Bean (Vigna radiata)
Researchers tested the effects of polyethylene microplastics on the germination and early growth of soybean and mung bean crops at various concentrations and particle sizes. They found that soybeans were more sensitive to microplastic exposure than mung beans, with significant inhibition of dry weight and root length at higher concentrations. The study suggests that microplastic contamination in agricultural soils could negatively affect food crop development, with impacts varying by plant species and particle characteristics.
Regulation strategies of microplastics with different particle sizes on cadmium migration processes and toxicity in soil-pakchoi system
Researchers tested how polystyrene microplastics of different sizes (0.2, 2, and 20 micrometers) affect cadmium movement from soil into pakchoi, a leafy vegetable. Larger microplastics actually reduced cadmium uptake by the plant by up to 47%, while the smallest particles had no effect. This study shows that microplastic size matters for food safety, as different-sized particles can either increase or decrease how much toxic metal ends up in the crops we eat.
Microplastic accumulation and oxidative stress in sweet pepper (Capsicum annuum Linn.): Role of the size effect
Researchers grew sweet peppers in soil containing microplastics of two different sizes and found that smaller particles were taken up and accumulated in the plant roots and stems more readily than larger ones. The microplastics triggered oxidative stress in the plants, with smaller particles causing more damage to the plants' cellular defense systems. This study shows that microplastics in agricultural soil can enter food crops, with smaller particles posing the greatest risk to both plant health and food safety.
Association between plant microbiota and cadmium uptake under the influence of microplastics with different particle sizes
Researchers investigated how different sizes of polystyrene microplastics affect plant microbiota and cadmium uptake in pakchoi. The study found that larger microplastic particles (2 and 20 micrometers) significantly altered rhizosphere and root bacterial communities and influenced cadmium accumulation, while smaller particles (0.2 micrometers) had less impact on bacterial community structure.
Impact of microplastics on plant physiology: A meta-analysis of dose, particle size, and crop type interactions in agricultural ecosystems
This meta-analysis of 37 studies found that microplastics significantly decrease plant biomass by 13% and chlorophyll content by 28%, while increasing oxidative stress by 20%. Higher doses and smaller particle sizes caused more damage, with particle size having a greater impact than concentration — and root activity was particularly sensitive to microplastic exposure.
The Influence of Polystyrene and Biodegradable Microplastics on Phaseolus vulgaris L. Growth
Researchers grew common bean (Phaseolus vulgaris) in soils contaminated with polystyrene microplastics and biodegradable microplastics separately and assessed growth outcomes at two time points. Both plastic types reduced plant biomass, root length, and chlorophyll content in a dose-dependent manner, with the biodegradable variant showing comparable phytotoxicity to conventional polystyrene.
Toxic effects of larger sized polyethylene microplastics on cucumber root secretion and oxidative stress
Hydroponic experiments showed that 25-micrometer polyethylene microplastics inhibit cucumber root growth, reduce chlorophyll and fruit yield, and alter root secretions that affect soil chemistry, with effects intensifying at higher concentrations. The findings demonstrate that even common, large-size microplastics can impair vegetable crop health, raising concerns about food security in microplastic-contaminated soils.
Particle size-dependent biomolecular footprints of interactive microplastics in maize
Researchers tested how five common types of microplastics at different particle sizes affect maize seedlings at the molecular and physiological level. The study found that smaller microplastic particles (75-150 micrometers) caused more cellular damage than larger ones, disrupting cell membranes, reducing photosynthetic pigments, and triggering stress responses. Mixtures of multiple plastic types were especially harmful, suggesting that real-world combinations of microplastic pollution may pose greater risks to crops than individual plastic types.
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.