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61,005 resultsShowing papers similar to Soil moisture and texture mediating the micro(nano)plastics absorption and growth of lettuce in natural soil conditions
ClearUptake, Distribution, and Impact of Micro- and Nano-Plastics in Horticultural Systems Using Lettuce (Lactuca sativa) as a Model Crop
Researchers studied how micro- and nanoplastics are taken up and distributed in lettuce grown in horticultural systems, finding that nanopolystyrene exposures significantly inhibited leaf and root development in a concentration-dependent manner. They optimized extraction methods for quantifying microplastics in soil and developed a synthesis procedure for nanoplastic test particles. The study demonstrates that plastic fragments from horticultural materials can accumulate in soil and affect crop growth, raising concerns about food safety.
Nanoplastics are taken up by lettuce and barley under realistic soil condition
Scientists found that tiny plastic particles called nanoplastics can be absorbed by lettuce and barley plants when grown in soil, even at low pollution levels similar to what's found in the environment. The plastic particles accumulated in the parts of the plants that people eat, showing a new way these pollutants could enter our food supply. While the amounts were small, this research reveals that nanoplastics from pollution can travel from soil into our crops, which could eventually affect human health.
Uptake and accumulation of microplastics in an edible plant
Researchers demonstrated for the first time that edible plants can take up and accumulate microplastics from soil. Using fluorescently labeled polystyrene beads, they showed that 0.2-micrometer particles entered lettuce roots through small cracks at lateral root emergence sites, traveled through the vascular system, and accumulated in the leaves. The findings raise concerns about a previously unrecognized pathway for human microplastic exposure through the consumption of vegetables grown in contaminated soil.
Microplastics in soil—uptake, fate, transport, and effect on the growth of plants
This review examines the mechanisms by which microplastics enter soil through agricultural practices, climate events, and soil organism activity, and summarizes current evidence on plant uptake -- driven primarily by transpiration pull -- and translocation of plastic particles through plant tissues. The authors identify significant knowledge gaps regarding long-term soil microplastic behavior and ecological effects on plant growth and nutritional quality.
Microplastic-Mediated Heavy Metal Uptake in Lettuce (Lactuca sativa L.): Implications for Food Safety and Agricultural Sustainability
Researchers grew lettuce in contaminated soil mixed with different types of microplastics, including fibers, glitter, and fragments from bags and bottles. They found that microplastics altered how heavy metals like lead, cadmium, and copper moved through the soil and into the plants, sometimes increasing uptake of toxic metals in roots while decreasing others in leaves. The results raise concerns about food safety in agricultural areas where both microplastic and heavy metal contamination overlap.
Effect of microplastics on dry matter content in Lactuca sativa L.
This study tested the effects of microplastic particles on dry matter content in lettuce plants, finding that microplastic exposure affected plant biomass production. As agricultural soils accumulate microplastics, their effects on crop yield and nutritional quality become important food safety concerns.
Micro plastic driving changes in the soil microbes and lettuce growth under the influence of heavy metals contaminated soil
Researchers studied how microplastics interact with heavy metals in contaminated soil and their combined effects on lettuce growth and soil bacteria. Different types of microplastics altered soil chemistry and changed which microbes thrived, sometimes making heavy metals more available to plants. The study suggests that microplastic-contaminated agricultural soil could affect both the safety and nutritional quality of leafy vegetables that people eat.
Uptake and transport of micro/nanoplastics in terrestrial plants: Detection, mechanisms, and influencing factors
This review summarizes how micro and nanoplastics enter and move through plants, including uptake through roots and leaves via processes like endocytosis and movement through cell walls. Smaller particles penetrate more easily, and factors like surface charge and soil conditions affect how much plastic plants absorb. The findings are important because they show that crops can take up microplastics from contaminated soil, creating a potential pathway for these particles to reach the human diet.
Effects of naturally aged microplastics on arsenic and cadmium accumulation in lettuce: Insights into rhizosphere microecology
Researchers studied how naturally aged microplastics in soil affect the uptake of arsenic and cadmium by lettuce. At low concentrations, microplastics actually reduced heavy metal absorption and helped plant growth, but at higher concentrations they increased the amount of toxic metals taken up by the lettuce. This means microplastic-contaminated farmland could lead to higher levels of heavy metals in salad greens and other vegetables that people eat.
Microplastic Uptake in Vegetables: Sources, Mechanisms, Transport and Food Safety
This review gathered current knowledge on how microplastics enter agricultural soils and get taken up by vegetable crops, which are a major part of the human diet. Researchers found that microplastics can be absorbed through plant roots and transported to edible parts, with uptake influenced by particle size, plastic type, and soil conditions. The study highlights the need for more research on how microplastic contamination in food crops could affect human health and food safety.
Effects of Soil Microplastics on Plant Growth and Soil Health
A greenhouse experiment found that polyethylene and polypropylene microplastics at increasing concentrations reduced lettuce biomass, altered soil microbial activity, and changed soil structure and water retention, with effects more pronounced at higher MP concentrations.
Leafy Vegetable Assimilation of Atmospheric Microplastics/Nanoplastics: An Overlooked Source in Human Food?
This research highlights that leafy vegetables like lettuce can absorb microplastics and nanoplastics directly from the air through their leaves, not just from contaminated soil or water. This atmospheric pathway has been largely overlooked as a source of microplastic contamination in food crops. The finding suggests that people may be consuming more microplastics through salads and leafy greens than previously estimated.
Uptake and translocation of nanoplastics in mono and dicot vegetables
Scientists exposed four different vegetable crops to fluorescent nanoplastics and tracked where the particles ended up in the plants. Nanoplastics were absorbed through the roots and transported to the stems and leaves of all plants tested, including tomatoes, radishes, and leafy greens. This confirms that food crops can take up nanoplastics from contaminated soil and deliver them to the parts of the plant that people eat.
Lettuce seed germination in the presence of microplastic contamination
This study examined the effects of microplastic contamination on lettuce seed germination, finding that microplastics in soil altered physiological processes such as water retention and chlorophyll production, with implications for food safety and agricultural ecosystems.
Uptake and Accumulation of Nano/Microplastics in Plants: A Critical Review
This review summarizes the latest research on how microplastics and nanoplastics are taken up by food crops through roots and leaves. Nanoplastics can penetrate plant cell walls more easily than larger microplastics, and the water-pulling force of transpiration is the main driver moving particles up through the plant. These findings are important for food safety because they confirm that plastic particles in contaminated soil can end up inside the fruits and vegetables people eat.
A Systematic Review on Emission, Accumulation, Mechanism, and Toxicity Perspective of Micro‐Nanoplastics in the Soil–Plant Nexus
This systematic review examines how micro- and nanoplastics enter soil, accumulate in plants, and move through the soil-plant system. The research shows that microplastics alter soil properties, affect plant growth, and can be taken up by crop roots and transported to edible plant parts. This is a direct concern for human health because it means microplastics in agricultural soil may end up in the fruits and vegetables people consume.
Potential impact and mechanism of aged polyethylene microplastics on nitrogen assimilation of Lactuca sativa L.
Researchers investigated how aged polyethylene microplastics of different sizes affect nitrogen uptake and metabolism in romaine lettuce. They found that aged microplastics, especially smaller particles, accumulated in the plants and disrupted nitrogen assimilation processes. The study suggests that microplastic contamination in agricultural soils may affect crop nutrition and quality by interfering with how plants absorb and process essential nutrients.
Micro/nanoplastics: a potential threat to crops
This review examines micro- and nanoplastic contamination in agricultural soil and water, summarizing sources, adsorption onto microplastics, uptake pathways into crops, effects on plant growth and physiology, and current detection and removal approaches, while highlighting the limited data on nanoplastic transport in plants.
Particulate plastics-plant interaction in soil and its implications: A review
This review examines how micro- and nanoplastics in soil interact with plants, including uptake through roots, accumulation in plant tissues, and effects on growth, nutrient absorption, and soil microbial communities. The study highlights that these plastic particles can alter soil structure and chemistry in ways that affect crop development, raising concerns about food safety and agricultural productivity.
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.
Accumulation of plastics in terrestrial crop plants and its impact on the plant growth
This review examines how small plastic particles accumulate in crop plants and affect plant growth, finding that microplastics can enter plant tissues and disrupt physiological processes. Crops grown in microplastic-contaminated soil could carry plastic particles into the food supply, raising concerns about dietary exposure.
Mutual Effects and Uptake of Organic Contaminants and Nanoplastics by Lettuce in Co-Exposure
Researchers found that when lettuce was grown with both nanoplastics and common agricultural pollutants, the nanoplastics dramatically increased the amount of the painkiller ibuprofen absorbed into the plant's leaves (by up to 309% in salty conditions). This means nanoplastics in farm soil could act as carriers that boost how much of other harmful chemicals end up in the food we eat. The study highlights how microplastic contamination in agriculture can amplify human exposure to multiple pollutants at once.
Quantitative tracing of uptake and transport of submicrometre plastics in crop plants using lanthanide chelates as a dual-functional tracer
Researchers developed a new method using europium-tagged nanoplastics to precisely measure how 200-nanometer plastic particles are taken up by wheat and lettuce plants. The nanoplastics accumulated mainly in the roots, with a small but measurable amount transported to the shoots that people eat. This study confirms that food crops can absorb nanoplastics from contaminated soil, providing a direct pathway for these particles to enter the human diet.
Micro (nano) plastic pollution: The ecological influence on soil-plant system and human health.
This review examines how micro- and nanoplastics affect soil health, plant growth, and food quality, finding that these particles accumulate in plant root systems and can reduce crop yields and alter nutritional content. Since contaminated soil and water are increasingly delivering microplastics to food crops, these findings are directly relevant to agricultural food safety.