Toxicity Mechanisms of Nanoplastics on Crop Growth, Interference of Phyllosphere Microbes, and Evidence for Foliar Penetration and Translocation

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 58(2), P. 1010 - 1021

Published: Nov. 7, 2023

Despite the increasing prevalence of atmospheric nanoplastics (NPs), there remains limited research on their phytotoxicity, foliar absorption, and translocation in plants. In this study, we aimed to fill knowledge gap by investigating physiological effects tomato leaves exposed differently charged NPs absorption NPs. We found that positively caused more pronounced effects, including growth inhibition, increased antioxidant enzyme activity, altered gene expression metabolite composition even significantly changed structure phyllosphere microbial community. Also, exhibited differential translocation, with penetrating into dispersing uniformly within mesophyll cells. Additionally, absorbed were able translocate roots. These findings provide important insights interactions between crop plants demonstrate NPs' accumulation crops could negatively impact agricultural production food safety.

Language: Английский

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Towards realizing nano-enabled precision delivery in plants

Nature Nanotechnology, Journal Year: 2024, Volume and Issue: 19(9), P. 1255 - 1269

Published: June 6, 2024

Language: Английский

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Polymer nanoparticles pass the plant interface

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 30, 2022

Abstract As agriculture strives to feed an ever-increasing number of people, it must also adapt increasing exposure minute plastic particles. To learn about the accumulation nanoplastics by plants, we prepared well-defined block copolymer nanoparticles aqueous dispersion polymerisation. A fluorophore was incorporated via hydrazone formation and uptake into roots protoplasts Arabidopsis thaliana investigated using confocal microscopy. Here show that is inversely proportional nanoparticle size. Positively charged particles accumulate around root surfaces are not taken up or protoplasts, whereas negatively slowly become prominent over time in xylem intact roots. Neutral penetrate rapidly cells at plant but loading lower than for negative nanoparticles. These behaviours differ from those animal our results despite protection rigid cell walls, plants accessible soil water.

Language: Английский

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Star Polymers with Designed Reactive Oxygen Species Scavenging and Agent Delivery Functionality Promote Plant Stress Tolerance

ACS Nano, Journal Year: 2022, Volume and Issue: 16(3), P. 4467 - 4478

Published: Feb. 18, 2022

Plant abiotic stress induces reactive oxygen species (ROS) accumulation in leaves that can decrease photosynthetic performance and crop yield. Materials scavenge ROS simultaneously provide nutrients vivo are needed to manage this stress. Here, we incorporated both scavenging triggered agent release functionality into an ∼20 nm responsive star polymer (RSP) poly(acrylic acid)-block-poly((2-(methylsulfinyl)ethyl acrylate)-co-(2-(methylthio)ethyl acrylate)) (PAA-b-P(MSEA-co-MTEA)) alleviated plant by simultaneous nutrient release. Hyperspectral imaging indicates all of the RSP penetrates through tomato leaf epidermis, 32.7% applied associates with chloroplasts mesophyll. scavenged up 10 μmol mg–1 vitro suppressed stressed (Solanum lycopersicum) leaves. Reaction H2O2 enhanced (Mg2+) from polymers. Foliar increased photosynthesis plants under heat light compared untreated controls, enhancing carbon assimilation, quantum yield CO2 Rubisco carboxylation rate, photosystem II Mg loaded improved deficient plants, mainly promoting activity. These results indicate potential nanocarriers like alleviate allowing be more resilient stress, potentially other climate change induced stressors.

Language: Английский

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A nanocarrier pesticide delivery system with promising benefits in the case of dinotefuran: strikingly enhanced bioactivity and reduced pesticide residue

Environmental Science Nano, Journal Year: 2022, Volume and Issue: 9(3), P. 988 - 999

Published: Jan. 1, 2022

SPc can be conjugated with dinotefuran through hydrogen bonding and van der Waals forces, which reduce particle size, increase plant uptake bioactivity, decrease residue. The dinotefuran/SPc complex is relatively safe to predators plants.

Language: Английский

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Charge, Aspect Ratio, and Plant Species Affect Uptake Efficiency and Translocation of Polymeric Agrochemical Nanocarriers

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(22), P. 8269 - 8279

Published: May 25, 2023

An incomplete understanding of how agrochemical nanocarrier properties affect their uptake and translocation in plants limits application for promoting sustainable agriculture. Herein, we investigated the aspect ratio charge monocot wheat (Triticum aestivum) dicot tomato (Solanum lycopersicum) after foliar application. Leaf distribution to plant organs were quantified polymer nanocarriers with same diameter (∼10 nm) but different ratios (low (L), medium (M), high (H), 10–300 nm long) charges (−50 +15 mV). In tomato, anionic (20.7 ± 6.7 wt %) was higher than cationic (13.3 4.1 %). wheat, only transported (8.7 3.8 Both low polymers translocated longest did not translocate suggesting a phloem transport size cutoff. Differences correlated leaf interactions mesophyll cells. The positive decreases penetration through epidermis promotes into cells, decreasing apoplastic loading. These results suggest design parameters provide rapid complete an ability target agrochemicals specific organs, potential lower use associated environmental impacts.

Language: Английский

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Improving RNA-based crop protection through nanotechnology and insights from cross-kingdom RNA trafficking

Current Opinion in Plant Biology, Journal Year: 2023, Volume and Issue: 76, P. 102441 - 102441

Published: Sept. 9, 2023

Language: Английский

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Particle Size Determines the Phytotoxicity of ZnO Nanoparticles in Rice (Oryza sativa L.) Revealed by Spatial Imaging Techniques

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(36), P. 13356 - 13365

Published: Aug. 31, 2023

To understand the nanotoxicity effects on plants, it is necessary to systematically study distribution of NPs in vivo. Herein, elemental and particle-imaging techniques were used unravel size ZnO phytotoxicity. Small-sized (5, 20, 50 nm) showed an inhibitory effect length biomass rice (Oryza sativa L.) as a model plant. NP caused root cell membrane damage, increased malondialdehyde content, activated antioxidant enzymes. As control, same dose Zn2+ salt did not affect physiological biochemical indices rice, suggesting that toxicity by entry dissolved Zn2+. Laser ablation inductively coupled plasma optical emission spectroscopy analysis revealed accumulated vascular tissues rhizodermis procambium. Furthermore, transmission electron microscopy confirmed internalized tissues. These results suggest may exist system their particle could be crucial factor determining toxicity. This provides evidence size-dependent phytotoxicity NPs.

Language: Английский

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Critical Review: Uptake and Translocation of Organic Nanodelivery Vehicles in Plants

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(13), P. 5646 - 5669

Published: March 22, 2024

Nanodelivery vehicles (NDVs) are engineered nanomaterials (ENMs) that, within the agricultural sector, have been investigated for their ability to improve uptake and translocation of agrochemicals, control release, or target specific tissues subcellular compartments. Both inorganic organic NDVs studied agrochemical delivery in literature, but research on latter has slower develop than literature former. Since two classes exhibit significant differences surface chemistry, physical deformability, even colloidal stability, trends that apply may not hold NDVs, vice versa. We here review current uptake, translocation, biotransformation, cellular internalization plants following foliar root administration. A background plant physiology is provided as a leveling ground researchers field. Trends examined function NDV properties compared those reported nanomaterials. Methods assessing fate transport (a major bottleneck field) discussed. end by identifying knowledge gaps must be understood order rationally design precision nanodelivery.

Language: Английский

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Nitric oxide‐releasing nanomaterials: from basic research to potential biotechnological applications in agriculture

New Phytologist, Journal Year: 2022, Volume and Issue: 234(4), P. 1119 - 1125

Published: March 10, 2022

Nitric oxide (NO) is a multifunctional gaseous signal that modulates the growth, development and stress tolerance of higher plants. NO donors have been used to boost plant endogenous levels activate NO-related responses, but this strategy often hindered by relative instability donors. Alternatively, nanoscience offers new, promising way enhance delivery plants, as NO-releasing nanomaterials (e.g. S-nitrosothiol-containing chitosan nanoparticles) many beneficial physicochemical biochemical properties compared non-encapsulated Nano are effective in increasing tissue enhancing effects both animal human systems. The authors believe, would like emphasize, new trends technologies essential for advancing research nanotechnology may represent breakthrough traditional agriculture environmental science. Herein, we aim draw attention scientific community potential basic applied alternatives conventional donors, providing brief overview current knowledge identifying future directions. We also express our opinion about challenges application nano such footprint stakeholder's acceptance these materials.

Language: Английский

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