Toxicological implications of selenium nanoparticles with different coatings along with Se 4+ on Lemna minor

Tarrahi, Roshanak; Khataee, Alireza; Movafeghi, Ali; Rezanejad, Farkhondeh; Gohari, Gholamreza

doi:10.1016/j.chemosphere.2017.04.142

Cited by 44 publications

(19 citation statements)

References 43 publications

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“…In fact, the reduction of POD activity at concentration of 50 mg/L NiO-NP could be the outcome of high ROS production which might decompose enzyme structure. Some previous studies are consistent with our obtained results such as the falling in POD activity in L. minor treated with high concentration of ZnO-NPs and Si-NPs after a raise in SOD activity [33,34]. In contrast, low concentration (1 mg/L) of NiO-NP and Bulk-NiO was not induce POD activity in the examined plants.…”

Section: Discussionsupporting

confidence: 93%

“…Phenol and flavonoid contents can be influenced by different stress situations such as plants exposure to different contaminants. In that conditions, phenolic compounds operate for conservative purposes against stress and detoxification of ROS in plant cells [34]. Treatment of two plant species with high concentrations of NiO-NP (10 and 50 mg/L) was led to the statistically significant enhancement of the phenol and flavonoid contents in two plant species were increased by enhancement of the NiO-NP and Bulk-NP concentrations.…”

Section: Discussionmentioning

confidence: 99%

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Phytotoxicological Effects of Bulk-NiO and NiO Nanoparticles on Lesser and Giant Duckweeds as Model Macrophytes: Changes in the Plants Physiological Responses

Torbati

2018

IJT

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Background: Although the production and usage of nanoparticles and their entrance to the ecosystem have increased in last decades, information about their negative impacts on organisms is scarce. We concentrated on the comparison of the toxicological effects of different concentrations of bulk-nickel oxide and nickel oxide nanoparticles (NiO-NPs) on lesser (Lemna minor L.) and giant (Spirodela polyrhiza (L.) Schleid.) duckweeds as two model macrophytes. Methods: The morphology of nickel oxide nanoparticles was studied by scanning electron microscopy (SEM) and transition electron microscopy (TEM). The plant's growth, photosynthetic pigments content, the contents of total phenols, flavonoids and MDA, and the activities of some antioxidant enzymes were investigated as indices to assess the toxicological effects of the NPs on two plant species. Results: The content of photosynthetic pigments in both of the plant species was significantly reduced by high concentration of NiO-NP. Increasing the concentration of the contaminants in the plant species was led to the remarkable enhancement of total phenol and flavonoid and MDA contents. Moreover, increasing the activity of the plant's antioxidant enzymes could reflect high reactive oxygen species (ROS) production after the plant's treatments with the contaminants. Conclusion: The negative effects of the NiO-NPs, especially in high concentrations, on L. minor and S. polyrhiza were more than those of Bulk-NiO.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Phytotoxicological Effects of Bulk-NiO and NiO Nanoparticles on Lesser and Giant Duckweeds as Model Macrophytes: Changes in the Plants Physiological Responses

Torbati

2018

IJT

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“…This was due to increased oxidative stress and lipid peroxidation. MDA levels indicate ROS accumulation and the invasion of these molecules into the membrane due to plant toxicity by pollutants (Tarrahi et al, 2017). nanoparticles has been reported in numerous plants under various stresses (Saison et al, 2010).…”

Section: Malondialdehyde Contentmentioning

confidence: 99%

“…MDA levels indicate ROS accumulation and the invasion of these molecules into the membrane due to plant toxicity by pollutants (Tarrahi et al, 2017). Azimi, R., Jankju Borzelabad, M., Feizi, H., & Azimi, A.…”

Section: Malondialdehyde Contentmentioning

confidence: 99%

Effect of Nano and Bulk Nickel Oxide on Biomass and Antioxidant Enzymes Production of Fennel

et al. 2021

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The production, growth, and physiological processes of plants respond differently to the varying concentrations of nanoparticles. Due to the increasing importance and application of nanoparticles, it is essential to determine the impact on plants physiological systems. Therefore, this study investigated the effect of different bulk and nano nickel oxide concentrations on biomass production and the enzymatic system of fennel. The experiment was carried out in a completely randomized design with the applications of 5 replications and 5 concentrations (0, 20, 100, 400, and 800 ppm) in the greenhouse of the Faculty of Science, Mashhad Branch, Islamic Azad University. This study analyzed various plants traits, including shoot and dry root weight and a few antioxidant enzymes. The results showed that root and shoot dry weight were not affected by the applied treatments. Furthermore, all applied levels of treatment significantly increased the activity of fennel leaf polyphenol oxidase compared to the control. The bulk treatment at 800 ppm was exempted, where the application of bulk nickel oxide and nanoparticles decreased dehydrogenase enzyme activity. In addition, the activity of guaiacol peroxidase increased under all levels of treatments except 100 ppm nanoparticles. The highest amount of phenylalanine ammonia-lyase activity was obtained under 20 ppm treatment with a 61.98% increase compared to the control method. Furthermore, nickel oxide treatments also increased MDA. The results showed that nanomaterials' toxicity, caused oxidative stress in this plant, and the differences in MDA content of leaves explained the higher toxicity of NiO nanoparticles than bulk form. Moreover, higher activity of leaf antioxidative enzymes in bulk NiO2 treatments, especially Guaiacol Peroxidase, explained the plant's higher resistance to oxidative stress.

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“…A recent study showed that the biogenic SeNPs stabilized by humic-like substances from the extracellular polymeric substances (EPS) produced by anaerobic granular sludge biofilms had decreased bioavailability and toxicity on zebrafish embryos, in comparison to chemogenic SeNPs and selenite [ 134 ]. Several investigations of SeNPs toxicity toward aquatic and other organisms showed that the concentration, the form and characteristics, as well as the presence of other compounds, influence the degree of toxicity [ 100 , 135 , 136 , 137 , 138 ]. There is a scientific opinion published by the EFSA journal on the data provided by a petitioner, in which it was stated that there were insufficient data to conclude on the safety and bioavailability of selenium humic/fulvic acid chelates [ 139 ].…”

Section: Conventional and Next-generation Selenium Dietary Supplemmentioning

confidence: 99%

Selenium Analysis and Speciation in Dietary Supplements Based on Next-Generation Selenium Ingredients

Constantinescu-Aruxandei

Frîncu

Capră

et al. 2018

Nutrients

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Selenium is essential for humans and the deficit of Se requires supplementation. In addition to traditional forms such as Se salts, amino acids, or selenium-enriched yeast supplements, next-generation selenium supplements, with lower risk for excess supplementation, are emerging. These are based on selenium forms with lower toxicity, higher bioavailability, and controlled release, such as zerovalent selenium nanoparticles (SeNPs) and selenized polysaccharides (SPs). This article aims to focus on the existing analytical systems for the next-generation Se dietary supplement, providing, at the same time, an overview of the analytical methods available for the traditional forms. The next-generation dietary supplements are evaluated in comparison with the conventional/traditional ones, as well as the analysis and speciation methods that are suitable to reveal which Se forms and species are present in a dietary supplement. Knowledge gaps and further research potential in this field are highlighted. The review indicates that the methods of analysis of next-generation selenium supplements should include a step related to chemical species separation. Such a step would allow a proper characterization of the selenium forms/species, including molecular mass/dimension, and substantiates the marketing claims related to the main advantages of these new selenium ingredients.

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Toxicological implications of selenium nanoparticles with different coatings along with Se 4+ on Lemna minor

Cited by 44 publications

References 43 publications

Phytotoxicological Effects of Bulk-NiO and NiO Nanoparticles on Lesser and Giant Duckweeds as Model Macrophytes: Changes in the Plants Physiological Responses

Phytotoxicological Effects of Bulk-NiO and NiO Nanoparticles on Lesser and Giant Duckweeds as Model Macrophytes: Changes in the Plants Physiological Responses

Effect of Nano and Bulk Nickel Oxide on Biomass and Antioxidant Enzymes Production of Fennel

Selenium Analysis and Speciation in Dietary Supplements Based on Next-Generation Selenium Ingredients

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