Phytotoxicity evaluation of ZnO nanoparticles synthesized from Corriandrum sativum leaf extract
TL;DR: In this paper, the potential of green synthesized zinc oxide nanoparticles (ZnO NPs) as a nano-based nutrient source for agricultural applications has been investigated, and the suitable concentrations of ZnO NP for seedling emergence and germination of Vigna radiate seeds were then explored at varying the zinc oxide NP levels (0, 15, 62, 125, and 250 ǫ/L).
About: This article is published in Materials Today: Proceedings.The article was published on 2021-03-27. It has received 11 citations till now.
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TL;DR: In this article , zinc oxide nanoparticles were examined by X-ray diffraction pattern which exhibit the formation of pure hexagonal structured zinc oxide with 12.8 nm as crystallite size.
17 citations
TL;DR: It was concluded that environmentally friendly obtained RP-Pd/AC NPs could be a promising new alternative in different fields.
4 citations
TL;DR: In this article , a phytotoxicity experimental assessment revealed that the water used in the germination of Lycopersicon esculentum tomato seeds which was treated with TiO2 quantum dots, TDs1 (2.7 nm), TDs2 (3.1 nm) and Degona (Degussa) respectively, had no impact on the tomato seed germination process.
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Dissertation•
14 Aug 2018
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TL;DR: The results of the present study have shown the role of NO in the reducing of ZnONPs toxicity through the regulation of accumulation ofZn as well as the functioning of the AsA–GSH cycle.
Abstract: The present study investigates ameliorative effect of nitric oxide (NO) against zinc oxide nanoparticles (ZnONPs) phytotoxicity in wheat seedlings. ZnONPs exposure hampered growth of wheat seedlings which was coincided with reduced photosynthetic efficiency (Fv/Fm and qP) due to increased accumulation of zinc (Zn) in xylem and phloem saps. However, SNP supplementation has partially mitigated the ZnONPs-mediated toxicity by modulation of photosynthetic activity and Zn accumulation in xylem and phloem sap. Further, the results reveal that ZnONPs treatments enhanced level of hydrogen peroxide (H2O2) and hence lipid peroxidation (as malondialdehyde; MDA) due to severely inhibited activities of the ascorbate-glutatione cycle (AsA-GSH) enzymes: ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR), and its associated metabolites: reduced ascorbate and glutathione. In contrast to this, the addition of SNP together with ZnONPs maintained the cellular functioning of the AsA-GSH cycle properly, hence lesser damage was noticed in comparison to ZnONPs treatments alone. The protective effect of SNP against ZnONPs toxicity on fresh weight (growth) can be reversed by 2-(4carboxy-2-phenyl)-4,4,5,5-tetramethyl- imidazoline-1-oxyl-3-oxide, a NO scavenger, suggesting role of NO released from SNP in ameliorating ZnONPs toxicity. Overall the results of the present study have shown about implication of NO in the reducing ZnONPs toxicity through the regulation of accumulation of Zn, and functioning of the AsA-GSH cycle.
1,119 citations
TL;DR: The current study has clearly demonstrated that the particle size variations and surface area to volume ratios of ZnO NPs are responsible for significant higher antibacterial activities.
414 citations
TL;DR: The cytotoxicity studies revealed that Ln-ZnO NPs showed no effect on normal murine RAW264 cells and were effective in inhibiting the viability of human A549 lung cancer cells at higher concentrations of 80μgmL-1.
188 citations
TL;DR: Results suggest that cytotoxicity and phytotoxicity of the green synthesized AgNPs were significantly less than wet-chemistry synthesized ones and confirmed that green AgNps are safer than chemically-synthesized AgnPs.
183 citations
TL;DR: In this paper, a green process was used to synthesize biocompatible ZnO nanoparticles from the zinc nitrate via green process using leaf extracts of the Costus pictus D.Don medicinal plant.
Abstract: In this work we aim to synthesize biocompatible ZnO nanoparticles from the zinc nitrate via green process using leaf extracts of the Costus pictus D. Don medicinal plant. FTIR studies confirm the presence of biomolecules and metal oxides. X-ray diffraction (XRD) structural analysis reveals the formation of pure hexagonal phase structures of ZnO nanoparticles. The surface morphologies of ZnO nanoparticles observed under a scanning electron microscope (SEM) suggest that most ZnO crystallites are hexagonal. EDX analysis confirms the presence of primarily zinc and oxygen. TEM images show that biosynthesized zinc oxide nanoparticles are hexagonal and spherical. The plausible formation mechanisms of zinc oxide nanoparticles are also predicted. The biosynthesized zinc oxide nanoparticles exhibit strong antimicrobial behavior against bacterial and fungal species when employing the agar diffusion method. Synthesized ZnO nanoparticles exhibit anticancer activity against Daltons lymphoma ascites (DLA) cells as well as antimicrobial activity against some bacterial and fungal strains.
170 citations