Phytotoxicity of silver nanoparticles to Lemna minor: Surface coating and exposure period-related effects

Pereira, Sara; Jesus, Fátima; Aguiar, Sara; Oliveira, Rhaul; Fernandes, Marco; Ranville, James F.; Nogueira, António J.A.

doi:10.1016/j.scitotenv.2017.09.275

Cited by 57 publications

(30 citation statements)

References 65 publications

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“…Engineered AgNPs are typically stabilized against aggregation through surface coating, using organic or inorganic compounds to coat the surface of AgNPs to obtain electrostatic, steric, or electrostatic repulsive forces between particles [134]. Surface coating may change AgNP properties such as optical properties, dispersion, and shape [65,135], thereby influencing the toxicity of AgNPs to plants. Cvjetko et al compared the toxicity of three types of AgNPs with different surface coatings (citrate, polyvinylpyrrolidone (PVP), and cetyltrimethylammonium bromide (CTAB)) on Allium cepa roots, and found that plants treated with AgNP-CTAB had significantly higher Ag content than plants treated with AgNP-citrate and AgNP-PVP, leading to strong inhibition of root growth and oxidative damage.…”

Section: Toxicity Mechanismsmentioning

confidence: 99%

“…These observations suggest that the toxicity of AgNPs is correlated with the size and surface coating [67]. Similarly, Pereira et al found that AgNP-PVP was more deleterious on the growth rate and fronds per colony than AgNP-citrate in Lemna minor , whereby AgNP-PVP reduced the growth rate 1.5-fold more than AgNP-citrate [65]. In another study, Liang et al observed the responses of Physcomitrella patens to AgNPs with different surface coatings at the gametophyte stages, and found that AgNPs without surface coating caused the worst damage to the chlorophyll of protonemata, whereas AgNP-PVP and AgNP-citrate just displayed negligible influence, suggesting that surface coating alleviated the damage of AgNPs to the chlorophyll of protonemata.…”

Section: Toxicity Mechanismsmentioning

confidence: 99%

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Impacts of Silver Nanoparticles on Plants: A Focus on the Phytotoxicity and Underlying Mechanism

Chen

2019

IJMS

346

177

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Nanotechnology was well developed during past decades and implemented in a broad range of industrial applications, which led to an inevitable release of nanomaterials into the environment and ecosystem. Silver nanoparticles (AgNPs) are one of the most commonly used nanomaterials in various fields, especially in the agricultural sector. Plants are the basic component of the ecosystem and the most important source of food for mankind; therefore, understanding the impacts of AgNPs on plant growth and development is crucial for the evaluation of potential environmental risks on food safety and human health imposed by AgNPs. The present review summarizes uptake, translocation, and accumulation of AgNPs in plants, and exemplifies the phytotoxicity of AgNPs on plants at morphological, physiological, cellular, and molecular levels. It also focuses on the current understanding of phytotoxicity mechanisms via which AgNPs exert their toxicity on plants. In addition, the tolerance mechanisms underlying survival strategy that plants adopt to cope with adverse effects of AgNPs are discussed.

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Section: Toxicity Mechanismsmentioning

confidence: 99%

Section: Toxicity Mechanismsmentioning

confidence: 99%

Impacts of Silver Nanoparticles on Plants: A Focus on the Phytotoxicity and Underlying Mechanism

Chen

2019

IJMS

346

177

View full text Add to dashboard Cite

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“…Some critical issues emerged from the literature about the protocols proposed by the standardized ISO and OECD guidelines. Methodologies and conditions are not always suitable for the optimal application of ecotoxicological tests based on freshwater plants (e.g., Cairns and Niederlehner, 1995;Navarro et al 2002;Gubbins et al 2011;Pereira et al 2018;Ding et al 2019) mainly due to the following limitations:…”

Section: Critical Issues In Standardized Plant-based Ecotoxicologicalmentioning

confidence: 99%

“…Exposition time span. Several studies (e.g., Gubbins et al 2011;Pereira et al 2018) showed how the extension of exposure compared to the time required by the standardized guidelines (for example from 7 to 14 days) can amplify the intensity of the response when testing plant models, providing additional evidence on the contaminant toxicity. iii.…”

Section: Critical Issues In Standardized Plant-based Ecotoxicologicalmentioning

confidence: 99%

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Ceschin

Bellini

Scalici

2020

Environ Sci Pollut Res

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This paper reviews the current state-of-the-art, limitations, critical issues, and new directions in freshwater plant ecotoxicology. We selected peer-reviewed studies using relevant databases and for each (1) publication year, (2) test plant species, (3) reference plant group (microalgae, macroalgae, bryophytes, pteridophytes, flowering plants), (4) toxicant tested (heavy metal, pharmaceutical product, hydrocarbon, pesticide, surfactant, plastic), (5) experiment site (laboratory, field), and (6) toxicant exposure duration. Although aquatic plant organisms play a key role in the functioning of freshwater ecosystems, mainly linked to their primary productivity, their use as biological models in ecotoxicological tests was limited if compared to animals. Also, toxicant effects on freshwater plants were scarcely investigated and limited to studies on microalgae (80%), or only to a certain number of recurrent species (Pseudokirchneriella subcapitata, Chlorella vulgaris, Lemna minor, Myriophyllum spicatum). The most widely tested toxicants on plants were heavy metals (74%), followed by pharmaceutical products and hydrocarbons (7%), while the most commonly utilized endpoints in tests were plant growth inhibition, variations in dry or fresh weight, morpho-structural alterations, chlorosis, and/or necrosis. The main critical issues emerged from plant-based ecotoxicological tests were the narrow range of species and endpoints considered, the lack of environmental relevance, the excessively short exposure times, and the culture media potentially reacting with toxicants. Proposals to overcome these issues are discussed.

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“…In their work, Kumari et al (2009) stated that Ag nanoparticles inhibited the growth of terrestrial plants Allium cepa. Pereira et al (2018) assessed the phytotoxicity of silver nanoparticles to Lemna minor. Ma et al (2010) examined the toxic effects of different sizes of AgNPs (20-80 nm) on Arabidopsis thaliana seedlings, and they observed an increase in toxicity after increasing the concentration of AgNPs.…”

Section: Introductionmentioning

confidence: 99%

The study of toxicity effects of biosynthesized silver nanoparticles using Veronica officinalis extract

Dobrucka

Szymański

Przekop

2019

Int. J. Environ. Sci. Technol.

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The main objective of the work was to assess the phytotoxicity of silver nanoparticles synthesized biologically using Veronica officinalis extract. The silver nanoparticles obtained by means of biological synthesis were characterized by UV-vis spectrophotometry (UV-VIS), transmission electron microscopy, scanning electron microscopy and atomic force microscopy (AFM). In order to assess the presence of biologically active compounds in V. officinalis extract, Fourier-transform infrared spectroscopy was used. AFM measurements indicated that the size of the obtained silver nanoparticles was about 15 nm. The phytotoxicity studies showed that biosynthesized silver nanoparticles did not exhibit any toxic effect throughout the range of concentrations examined during the study (0.0009-0.0675), both as regards Linum flavum and Lepidium sativum seeds.

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Phytotoxicity of silver nanoparticles to Lemna minor: Surface coating and exposure period-related effects

Cited by 57 publications

References 65 publications

Impacts of Silver Nanoparticles on Plants: A Focus on the Phytotoxicity and Underlying Mechanism

Impacts of Silver Nanoparticles on Plants: A Focus on the Phytotoxicity and Underlying Mechanism

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

The study of toxicity effects of biosynthesized silver nanoparticles using Veronica officinalis extract

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