Comparative phytotoxicity of ZnO nanoparticles, ZnO microparticles, and Zn2+on rapeseed (Brassica napusL.): investigating a wide range of concentrations

Kouhi, Seyed Mousa Mousavi; Lahouti, Mehrdad; Ganjeali, Ali; Entezari, Mohammad Hassan

doi:10.1080/02772248.2014.994517

Cited by 85 publications

(28 citation statements)

References 17 publications

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“…Many previous studies showed that metal ions (Cu 2+ and Zn 2+ , etc. ) could inhibit the root and stem growth of plants [ 39 , 40 ]. The release of metal ions is inevitable in metal oxide NP suspensions.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Phytotoxicity of Metal Oxide Nanoparticles on Two Crop Plants, Maize (Zea mays L.) and Rice (Oryza sativa L.)

Yang

Chen

Dou

et al. 2015

IJERPH

205

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In this study, the phytotoxicity of seven metal oxide nanoparticles(NPs)—titanium dioxide (nTiO2), silicon dioxide (nSiO2), cerium dioxide (nCeO2), magnetite (nFe3O4), aluminum oxide (nAl2O3), zinc oxide (nZnO) and copper oxide (nCuO)—was assessed on two agriculturally significant crop plants (maize and rice). The results showed that seed germination was not affected by any of the seven metal oxide NPs. However, at the concentration of 2000 mg·L−1, the root elongation was significantly inhibited by nCuO (95.73% for maize and 97.28% for rice), nZnO (50.45% for maize and 66.75% for rice). On the contrary, minor phytotoxicity of nAl2O3 was only observed in maize, and no obvious toxic effects were found in the other four metal oxide NPs. By further study we found that the phytotoxic effects of nZnO, nAl2O3 and nCuO (25 to 2000 mg·L−1) were concentration dependent, and were not caused by the corresponding Cu2+, Zn2+ and Al3+ ions (0.11 mg·L−1, 1.27 mg·L−1 and 0.74 mg·L−1, respectively). Furthermore, ZnO NPs (<50 nm) showed greater toxicity than ZnO microparticles(MPs)(<5 μm) to root elongation of both maize and rice. Overall, this study provided valuable information for the application of engineered NPs in agriculture and the assessment of the potential environmental risks.

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Section: Resultsmentioning

confidence: 99%

Assessment of the Phytotoxicity of Metal Oxide Nanoparticles on Two Crop Plants, Maize (Zea mays L.) and Rice (Oryza sativa L.)

Yang

Chen

Dou

et al. 2015

IJERPH

205

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“…Seeds of a tetraploid (Triticum turgidum 'Oshnavie') and a hexaploid (Triticum aestivum 'Sardari') wheat were obtained from the Agricultural Research Center of Urmia, West Azarbayjan, Iran. Seeds were surface sterilized with 5 % (v/v) sodium hypochlorite solution for 10 min (Mousavi Kouhi et al, 2014), rinsed with tape water, and imbedded for 12 h. The seeds were placed in Petri dishes containing moist filter paper and were kept in a dark incubator for 72 h at 27 °C. Then, 8 seedlings were sown in each plastic pot (13 × 16 cm) containing vermiculite.…”

Section: Plant Materials and Treatment Conditionsmentioning

confidence: 99%

Comparative growth and physiological responses of tetraploid and hexaploid species of wheat to flooding stress

Khosravi

Heidari

Jamei

et al. 2018

AAS

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Present study is aimed to comparatively investigate the response of two ploidy levels of wheat including a tetraploid (Triticum turgidum L.) and a hexaploid (Triticum aestivum L.) wheat to different durations of flooding stress. Wheat seedlings were exposed to flooding stress for 0, 3, 6 and 9 days. Results showed that all flooding treatments significantly decreased the shoot and root length, and chlorophyll content of both species of wheat. The decrease in chlorophyll content of tetraploid wheat was more than that of hexaploid one. In both species, ADH activity of root was significantly increased under flooding stress, where the increase was more in hexaploid wheat. Flooding stress did not significantly affect root and shoot water content, root porosity, and shoot protein content of any wheat species. Tetraploid and hexaploid wheat used different mechanisms for better tolerance of flooding condition, where tetraploid wheat increased the proline content but in hexaploid wheat, an increase in soluble sugar content was observed.

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“…Zinc has a major role as a biological micronutrient in plant systems, and this includes its important functions in metal-protein complexes [14]. Further zinc functions operating within a specific concentration range include its activity in plant protection, formation of a stabilizing agent for cell membranes, support for protein synthesis, wide-spread membrane functions for cell elongation, and maintaining vital protection against environmental stress [14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Characterization of the physical properties of zinc-containing particles is necessary when they are not in free or complexed-ion form, and this is especially important when considering the size, morphology, crystallinity, and stability of nanoparticles [8,14,23]. While foliar-applied ZnO NP concentrations can have both positive and negative effects on plant growth and development compared to the ionic form (Zn 2+ ) of corresponding metal and micro(macro)particles [17], most of the reported results of ZnO NPs’ impact on crops are based on laboratory experiments and hydroponic cultures. Moreover, field experiments are quite rare and reports on direct foliar application of ZnO NPs are mostly lacking in recent publications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Foliar Spray Application of Zinc Oxide Nanoparticles on Quantitative, Nutritional, and Physiological Parameters of Foxtail Millet (Setaria italica L.) under Field Conditions

et al. 2019

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It has been shown that the foliar application of inorganic nano-materials on cereal plants during their growth cycle enhances the rate of plant productivity by providing a micro-nutrient source. We therefore studied the effects of foliarly applied ZnO nanoparticles (ZnO NPs) on Setaria italica L. foxtail millet’s quantitative, nutritional, and physiological parameters. Scanning electron microscopy showed that the ZnO NPs have an average particle size under 20 nm and dominant spherically shaped morphology. Energy dispersive X-ray spectrometry then confirmed ZnO NP homogeneity, and X-ray diffraction verified their high crystalline and wurtzite-structure symmetry. Although plant height, thousand grain weight, and grain yield quantitative parameters did not differ statistically between ZnO NP-treated and untreated plants, the ZnO NP-treated plant grains had significantly higher oil and total nitrogen contents and significantly lower crop water stress index (CWSI). This highlights that the slow-releasing nano-fertilizer improves plant physiological properties and various grain nutritional parameters, and its application is therefore especially beneficial for progressive nanomaterial-based industries.

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Comparative phytotoxicity of ZnO nanoparticles, ZnO microparticles, and Zn²⁺on rapeseed (Brassica napusL.): investigating a wide range of concentrations

Cited by 85 publications

References 17 publications

Assessment of the Phytotoxicity of Metal Oxide Nanoparticles on Two Crop Plants, Maize (Zea mays L.) and Rice (Oryza sativa L.)

Assessment of the Phytotoxicity of Metal Oxide Nanoparticles on Two Crop Plants, Maize (Zea mays L.) and Rice (Oryza sativa L.)

Comparative growth and physiological responses of tetraploid and hexaploid species of wheat to flooding stress

Effect of Foliar Spray Application of Zinc Oxide Nanoparticles on Quantitative, Nutritional, and Physiological Parameters of Foxtail Millet (Setaria italica L.) under Field Conditions

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