Effects of zinc-oxide nanoparticles on soil, plants, animals and soil organisms: A review

Rajput, Vishnu D.; Minkina, Tatiana; Behal, Arvind; Sushkova, Svetlana; Mandzhieva, Saglara; Singh, Ritu; Gorovtsov, Andrey; Tsitsuashvili, Victoria; Purvis, William O.; Ghazaryan, Karen; Movsesyan, Hasmik

doi:10.1016/j.enmm.2017.12.006

Cited by 220 publications

(143 citation statements)

References 90 publications

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“…Predicted environmental concentrations range from 0.088-10,000 ng/L in surface water to 1.29-39 mg/kg in waste water treatment plant sludge for silver nanoparticles and 1-10,000 ng/L in surface water to 13.6-64.7 mg/kg in waste water treatment plant sludge for zinc oxide nanoparticles [5]. The concentration of zinc oxide nanoparticles in soil is predicted to be in the range of 0.026-100 µg/kg [8]. 2 of 18 The field of nanotechnology is also being explored as a new source of key improvements in the agricultural sector.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Chavan

Vigneshwaran

2019

Agronomy

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Soil bacteria are some of the key players affecting plant productivity. Soil today is exposed to emerging contaminants like metal engineered nanoparticles. The objective of this study was to evaluate the toxicological effects of silver and zinc oxide nanoparticles on bacteria classified as plant growth-promoting bacteria. Three types of bacteria-nitrogen fixers, phosphate solubilizers, and biofilm formers-were exposed to engineered nanoparticles. Initially, the effect of silver and zinc oxide nanoparticles was determined on pure cultures of the bacteria. These nanoparticles were then applied to soil to assess changes in composition of bacterial communities. Impacts of the nanoparticles were analyzed using Illumina MiSeq sequencing of 16S rRNA genes. In the soil used, relative abundances of the dominant and agriculturally significant phyla, namely, Proteobacteria, Actinobacteria, and Firmicutes, were altered in the presence of silver nanoparticles. Silver nanoparticles changed the abundance of the three phyla by 25 to 45%. Zinc oxide nanoparticles showed negligible effects at the phylum level. Thus, silver nanoparticles may impact bacterial communities in soil, and this in turn may influence processes carried out by soil bacteria.

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Section: Introductionmentioning

confidence: 99%

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Chavan

Vigneshwaran

2019

Agronomy

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“…On the environment, these nanoparticles accumulate in ecosystems (e.g. water and soils) posing threats to living organisms [38,39].…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of ZnO thin films prepared by glancing angle deposition

et al. 2019

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Highlights• Zinc Oxide thin films were deposited by reactive magnetron sputtering;• Inclined columns changed the thin films' surface porosity;• Sputtering incidence angle affects microstructure and antifungal properties;• Mesoporous thin films improved the antifungal properties against Candida albicans; ABSTRACTThin films of zinc oxide (ZnO) were produced by reactive DC magnetron sputtering with sputtering angles of α = 0º, 40º, 60º and 80º (glancing angle deposition configuration), aiming to be tested against the opportunist pathogenic fungus Candida albicans. The results showed the formation of stoichiometric ZnO thin films, with inclined columns for incidence angles equal to or more than 40º. All thin films presented high transparency in the visible range above the bandgap region (near 380 nm). The deposition conditions gave rise to a three-fold increase of the surface porosity with the increment of the incidence angle. Noteworthy, is the formation of different types of pores distributions, from micro-, through meso-, to macropores. Regarding the biological effect, the thin films produced with inclined columns presented a significant antifungal activity, with the inhibition of viable cell growth by 68 %. Moreover, the formation of mesoporous films enhanced the antifungal properties of ZnO thin films against Candida albicans. The overall behaviour indicates that these thin films are promising candidates to be applied in antimicrobial surfaces, as well as to be used in further studies to determine the molecular mechanisms involved in the antimicrobial action of ZnO.3

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“…Several studies have noted that ZnO NPs are more toxic than TiO 2 NPs because of the higher solubility of ZnO NPs than that of TiO 2 NPs . The primary attribute of toxicity appears to be due to the production of ROS from NPs, which is responsible for cell damage by such oxidative stress . Researchers reported ROS generation from NPs to be increased as NP concentration increased and size decreased.…”

Section: Resultsmentioning

confidence: 99%

“…Given that different types of NPs are released into water, released metal‐oxide NPs can react or interact with other NPs and form NHs due to the NPs' large surface area and high reactivity. Besides, the toxicity effect of NPs in aquatic systems has been made for single‐NP types of nanomaterials rather than NHs that consist of two different types of NPs . To the best of our knowledge, in the recent literature, there is no study on the toxicity of NHs to marine microalgae.…”

Section: Introductionmentioning

confidence: 99%

Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

Baek

Joo

et al. 2019

Environmental Toxicology

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Increasing consumption of metal-oxide nanoparticles (NPs) and carbon-based nanomaterials has caused significant concern about their potential hazards in aquatic environments. The release of NPs into aquatic environments could result in adsorption of NPs on microorganisms. While metal-oxide NP-conjugated carbon-based nanohybrids (NHs) may exhibit enhanced toxicity toward microorganisms due to their large surface area and the generation of reactive oxygen species (ROS), there is a lack of information regarding the ecotoxicological effects of NHs on marine diatom algae, which are an indicator of marine pollution. Moreover, there is scant information on toxicity mechanisms of NHs on aquatic organisms. In this study, four NHs (ie, ZnOconjugated graphene oxide [GO], ZnO-conjugated carbon nanotubes [CNTs], TiO 2conjugated GO, and TiO 2 -conjugated CNT) that were synthesized by a hydrothermal method were investigated for their toxicity effects on a Thalassiosira pseudonana marine diatom. The in vitro cellular viability and ROS formation employed at the concentration ranges of 50 and 100 mg/L of NHs over 72 hours revealed that ZnO-GO had the most negative effect on T. pseudonana. The primary mechanism identified was the generation of ROS and GO-induced dispersion that caused electrostatic repulsion, preventing aggregation, and an increase in surface areas of NHs. In contrast to GO-induced dispersion, large aggregates were observed in ZnO/TiO 2conjugated CNT-based NHs. The scanning electron microscopy images suggest that NHs covered algae cells and interacted with them (shading effects); this reduced light availability for photosynthesis. Detailed in vitro toxicity effects and mechanisms that cause high adverse acute toxicity on T. pseudonana were unveiled; this implied concerns about potential hazards of these mechanisms in aquatic ecosystems. K E Y W O R D S carbon nanotube, graphene oxide, metal oxides, nanohybrids, Thalassiosira pseudonana,toxicity

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Effects of zinc-oxide nanoparticles on soil, plants, animals and soil organisms: A review

Cited by 220 publications

References 90 publications

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Antifungal activity of ZnO thin films prepared by glancing angle deposition

Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

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Effects of zinc-oxide nanoparticles on soil, plants, animals and soil organisms: A review

Cited by 220 publications

References 90 publications

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Effects of Nanoparticles on Plant Growth-Promoting Bacteria in Indian Agricultural Soil

Antifungal activity of ZnO thin films prepared by glancing angle deposition

Toxicity of ZnO/TiO2‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana

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Product

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Toxicity of ZnO/TiO₂‐conjugated carbon‐based nanohybrids on the coastal marine alga Thalassiosira pseudonana