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61,005 resultsShowing papers similar to Responses of submerged plant Vallisneria natans growth and leaf biofilms to water contaminated with microplastics
ClearUnraveling the toxic mechanisms of microplastics in aquatic ecosystem: A case study on Vallisneria natans and Myriophyllum verticillatum
Researchers exposed two submerged aquatic plant species (Vallisneria natans and Myriophyllum verticillatum) to PVC, polystyrene, and polyethylene microplastics at three concentrations, finding that all three types significantly inhibited photosynthesis and growth and triggered oxidative stress, with effects varying by plastic type and plant species.
[Response of Water-Vallisneria natans-Sediment System to Polyethylene Microplastics].
This study examined how polyethylene microplastics affect the water-Vallisneria natans-sediment system, finding that microplastic exposure alters aquatic plant physiology, sediment microbial activity, and nutrient cycling dynamics.
Toxicity mechanism of microplastics on the growth traits and metabolic pathways of Vallisneria natans under different light environments
Researchers examined how microplastics affect the aquatic plant Vallisneria natans under different light conditions and found that strong light significantly increased microplastic accumulation on leaves and roots. The combination of high light and microplastics caused the most severe disruption to photosynthesis, energy metabolism, and triggered elevated oxidative stress. The findings suggest that environmental conditions like light intensity can amplify the harmful effects of microplastic pollution on freshwater plants.
Shifting enzyme activity and microbial composition in sediment coregulate the structure of an aquatic plant community under polyethylene microplastic exposure
Researchers investigated how polyethylene microplastics affect underwater plant communities and found that the impact varies significantly by species. Canopy-forming plants actually grew more under microplastic exposure, while rosette-forming species declined sharply, shifting the overall community structure. The study suggests that microplastics in freshwater sediments can reshape aquatic ecosystems by altering enzyme activity and microbial composition in ways that favor some plant species over others.
Ecological impacts of polylactic acid and polylactic acid-polyethylene microplastics on freshwater ecosystems: Insights from a water–Vallisneria natans–sediment system
Researchers tested the effects of biodegradable PLA and PLA-polyethylene blend microplastics on a freshwater ecosystem containing aquatic plants and sediment. Both types of microplastics altered water chemistry, reduced plant growth, increased oxidative stress, and shifted the microbial communities in both water and sediment. The study demonstrates that even biodegradable plastic alternatives can disrupt freshwater ecosystems in meaningful ways.
Effects of microplastics/nanoplastics on Vallisneria natans roots and sediment: Size effect, enzymology, and microbial communities
This study compared how polystyrene micro- and nanoplastics of three different sizes (20 nm, 200 nm, and 2 µm) affected the aquatic plant Vallisneria natans and surrounding sediment. Smaller particles adhered more readily to roots and altered root growth, while larger particles caused greater oxidative stress. All sizes disrupted sediment enzyme activity and shifted microbial communities on root surfaces, reducing beneficial bacteria like Proteobacteria. The findings show that particle size is a key variable in predicting microplastic harm to aquatic plant ecosystems.
Effect of plastic pollution on freshwater flora: A meta-analysis approach to elucidate the factors influencing plant growth and biochemical markers
Meta-analysis of 43 studies found that higher concentrations of micro- and nanoplastics negatively affected aquatic plant growth while increasing protein content and antioxidant enzyme activity as a stress response. Among polymers, PVC most strongly disrupted photosynthetic pigments, and algal species were the most growth-sensitive plant group.
Response strategies of stem/leaves endophyte communities to nano-plastics regulate growth performance of submerged macrophytes.
Nano-polystyrene exposure changed the composition and activity of endophytic bacterial communities in the stems and leaves of aquatic macrophytes, with some endophyte shifts helping plants maintain growth by modulating stress responses, revealing a microbiome-mediated tolerance mechanism.
Multiple endpoints of polyethylene microplastics toxicity in vascular plants of freshwater ecosystems: A study involving Salvinia auriculata (Salviniaceae)
Researchers exposed the freshwater plant Salvinia auriculata to polyethylene microplastics for 28 days and observed reduced growth, thinner leaf tissue, and structural damage to cells. The study found that microplastics adhered to leaf and root surfaces, causing chlorophyll loss, cell membrane damage, and oxidative stress in the plants.
Bacterial community are more susceptible to nanoplastics than algae community in aquatic ecosystems dominated by submerged macrophytes
Researchers conducted a mesocosm experiment to test how nanoplastics affect bacterial and algal communities in aquatic ecosystems with submerged plants. They found that bacterial communities were significantly more sensitive to nanoplastic exposure than algal communities, with notable shifts in bacterial composition and function. The study reveals that different groups of microorganisms in natural water environments respond very differently to nanoplastic contamination.
Impact of microplastics on the foraging, photosynthesis and digestive systems of submerged carnivorous macrophytes under low and high nutrient concentrations
Researchers investigated how polystyrene microplastics affect the carnivorous aquatic plant Utricularia vulgaris, finding that high concentrations reduced growth, photosynthesis, and chlorophyll content while increasing oxidative stress. The study also revealed that microplastics accumulated in the plant's traps and altered the associated microbial community, though higher nutrient levels helped compensate for some of the negative growth effects.
Polyethylene microplastics interfere with the nutrient cycle in water-plant-sediment systems
Researchers studied how polyethylene microplastics affect nutrient cycling in freshwater systems containing submerged plants and sediment. They found that the microplastics significantly reduced nitrogen and carbon content in plant leaves and disrupted the microbial communities in sediment responsible for nutrient processing. The study demonstrates that microplastic pollution can interfere with fundamental biogeochemical cycles that maintain the health of aquatic ecosystems.
Rapid adaptive responses of rosette‐type macrophyte Vallisneria natans juveniles to varying water depths: The role of leaf trait plasticity
This plant ecology study examined how juvenile aquatic plants adapt to different water depths over short time periods through changes in leaf shape and growth. It is not directly related to microplastics, though aquatic plant communities interact with microplastic pollution in lake sediments.
Microplastics as emerging stressors in plants: biochemical and metabolic responses
This review examines how microplastics act as environmental stressors in plants, disrupting biochemical and metabolic processes including photosynthesis, antioxidant defenses, and nutrient uptake, with effects varying by polymer type, particle size, and concentration.
Natural filters of marine microplastic pollution: implications for plants and submerged environments
Researchers reviewed how vegetated ecosystems — like wetlands and marshes — act as natural filters that trap microplastics before they flow into waterways, but found that these trapped particles can still harm soil health and plant growth by causing oxidative stress. The review highlights a critical gap: plants help protect aquatic environments from microplastic pollution while simultaneously being harmed by it themselves.
Negative impacts of nanoplastics on the purification function of submerged plants in constructed wetlands: Responses of oxidative stress and metabolic processes
Researchers exposed a submerged aquatic plant commonly used in constructed wetlands to polystyrene nanoplastics and measured the impacts on growth, photosynthesis, and metabolism. They found that nanoplastics were absorbed and transported throughout the plant, reducing growth by up to 73 percent and disrupting key metabolic pathways including the citric acid cycle. The study suggests that nanoplastic accumulation in wetland plants could compromise their ability to purify water.
Impact of microplastics on aquatic flora: Recent status, mechanisms of their toxicity and bioremediation strategies
This review examines how microplastics affect aquatic plants, from microscopic algae to larger vegetation, by physically blocking sunlight and pores and disrupting photosynthesis, reproduction, and nutrient uptake. Prolonged exposure triggers excessive production of harmful reactive oxygen species in plant cells, which can lead to cell death. The authors also highlight bioremediation approaches, including certain plants and microorganisms that can adsorb or break down microplastics by 25 to 80 percent in laboratory settings.
Microplastic residues in wetland ecosystems: Do they truly threaten the plant-microbe-soil system?
Researchers used a controlled pot experiment to assess microplastic effects on wetland plant growth, soil microbial communities, and nutrient cycling, finding that MPs altered soil enzyme activity and shifted bacterial community composition but had variable effects on plant growth depending on plastic type.
Microplastics: toxicity and tolerance in plants
Researchers reviewed how microplastics harm both land plants and water plants by disrupting their growth, nutrient uptake, and genetic function, while also triggering the plants' own defense systems in response. Understanding how plants tolerate microplastic exposure is important because contaminated crops could eventually affect human health through the food chain.
Effect of microplastics exposure on the photosynthesis system of freshwater algae
Researchers investigated how polypropylene and polyvinyl chloride microplastics affect the photosynthesis system of freshwater algae and found that both types reduced chlorophyll content and impaired photosynthetic efficiency. The damage was concentration-dependent and worsened over the growth period. The study highlights that microplastic pollution in freshwater can harm algae, which form the base of aquatic food chains.
From energy collapse to chemical defense: Microplastics reshape the metabolic landscape of Tetrastigma hemsleyanum (Vitaceae)
Researchers investigated how polystyrene microplastics affect the medicinal plant Tetrastigma hemsleyanum, confirming that the particles accumulate in roots and travel to leaves through the vascular system. Microplastic exposure caused significant oxidative damage, a 42.5% reduction in chlorophyll content, and disrupted photosynthetic energy metabolism. The plant responded by redirecting metabolic resources from carbon fixation toward producing antioxidant flavonoid compounds as a defense mechanism.
Responses of submerged macrophytes to different particle size microplastics and tetracycline co-pollutants at the community and population level
Researchers set up outdoor experimental ponds to study how microplastics of different sizes combined with the antibiotic tetracycline affect communities of underwater aquatic plants. Smaller microplastics caused more harm to plant diversity and growth, and the combined exposure with antibiotics created worse effects than either pollutant alone. The study suggests that microplastic pollution could amplify the damage antibiotics cause to freshwater plant ecosystems.
The bioadhesion and effects of microplastics and natural particles on growth, cell viability, physiology, and elemental content of an aquatic macrophyte Elodea canadensis
Researchers tested how different types of microplastics, including polyethylene fragments, polyacrylonitrile fibers, and tire wear particles, affect the aquatic plant Elodea canadensis. They found that all microplastic types adhered to the plant's tissues and caused varying degrees of leaf damage, with polyethylene fragments being the most harmful. The study indicates that microplastic pollution in freshwater can directly impair aquatic plant health, potentially disrupting these important ecosystems.
Microplastics exposure causes oxidative stress and microbiota dysbiosis in planarian Dugesia japonica
Researchers exposed freshwater planarians to waterborne microplastics and found significant oxidative stress and disruption of their gut microbiota. The microplastic exposure altered antioxidant enzyme levels and shifted the composition of microbial communities in the planarians' digestive systems. The study suggests that microplastics can harm aquatic indicator species through both direct oxidative damage and indirect effects on their associated microbiome.