Regulation of morphological, molecular and nutrient status in Arabidopsis thaliana seedlings in response to ZnO nanoparticles and Zn ion exposure

Nair, Prakash M. Gopalakrishnan; Chung, Ill Min

doi:10.1016/j.scitotenv.2016.10.017

Cited by 88 publications

(50 citation statements)

References 67 publications

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“…Plants interaction with zinc ions and zinc oxide nanoparticles are different. Previous studies have shown that there are decreased macro-and micronutrients in plants when exposed to high concentrations of ZnO NPs, due to blockage of the roots by the nanoparticles, which has not been observed using zinc ions [157][158][159]. They block the uptake of other nutrients while becoming concentrated on the roots.…”

Section: Biosafety Of Nanomaterials In Sustainable Agriculturementioning

confidence: 94%

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The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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Nutrient deficiency in food crops is seriously affecting human health, especially those in the rural areas, and nanotechnology may become the most sustainable approach to alleviating this challenge. There are several ways of fortifying the nutrients in food such as dietary diversification, use of drugs and industrial fortification. However, the affordability and sustainability of these methods have not been completely achieved. Plants absorb nutrients from fertilizers, but most conventional fertilizers have low nutrient use and uptake efficiency. Nanofertilizers are, therefore, engineered to be target oriented and not easily lost. This review surveys the effects of the addition of macro- and nanonutrients to soil, the interaction, and the absorption capability of the plants, the environmental effect and food content of the nutrients. Most reports were obtained from recent works, and they show that plants nutrients could be enriched by applying nanoparticulate nutrients, which are easily absorbed by the plant. Although there are some toxicity issues associated with the use of nanoparticles in crop, biologically synthesized nanoparticles may be preferred for agricultural purposes. This would circumvent the concerns associated with toxicity, in addition to being pollution free. This report, therefore, offers more understanding on the application of nanotechnology in biofortification of plant nutrients and the future possibilities offered by this practice. It also highlights some of the ills associated with the introduction of nanomaterials into the soil for crop’s improvement.

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Section: Biosafety Of Nanomaterials In Sustainable Agriculturementioning

confidence: 94%

“…Further reasons are that ZnO NPs achieves higher sorption into the plant organs with lower mobility than the Zn 2+ ions [129]. Zinc in any form, however, should not be used in excess in the soil to avoid toxicity due to chlorosis and root morphology impairment [157,161].…”

Section: Biosafety Of Nanomaterials In Sustainable Agriculturementioning

confidence: 99%

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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“…Nair and Chung studied the 20 mg/l zinc oxide nanoparticles treatment triggered a 9% increase in lateral root formation in Arabidopsis thaliana seedlings. (Nair and Chung 2017) Our results using fractal geometry as a measure for the complexity of root system suggest that the roots were affected from an earlier stage of heavy metal (Cd, Cu and Zn) exposure and start to accumulate more heavy metals in themselves than the other organs. Compared to the conventional measure (dry weight), RCI could be used as a more sensitive measure to evaluate the positive and negative effects of heavy metal on the root system of wheat plants.…”

Section: Discussionmentioning

confidence: 75%

Fractal based complexity analysis of wheat root system under different heavy metals

Rajagoplan

Kadono

2019

Plant Biotechnology

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In this study, fractal geometry was applied to characterize the complexity of the root system morphology of wheat plants under the exposure of heavy metals, namely cadmium (Cd), copper (Cu) and zinc (Zn). We proposed a measure called, relative complexity index (RCI), a ratio based on fractal dimension (FD) before and after exposure to heavy metals. FDs were calculated by box-counting method with digitized and skeletonized images of roots of wheat plants cultivated in hydroculture system. RCI, and relative weight were mesuared under different concentrations of Cd (0.001, 0.01 and 0.05 mM), Cu (0.016, 0.4 and 1.2 mM) and Zn (0.3 and 0.75 mM). Results showed significant reduction of RCI for Cd stress with 0.01 and 0.05, all Cu concentrations and promotion at all zinc concentrations. In comparison, no statistically significant changes were found in conventional relative weight measurement at low concentrations of Cu, Cd and Zn. RCI were more sensitive and were reliable in reflecting the influence of heavy metals than the conventional measure. These results imply that RCI can be an effective measure of the negative and positive effects of heavy metals on the development of complexity of root system under heavy metal exposures.

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“…In this respect, irradiating seeds of some vegetable crops before sowing with low doses up to 20 Gy increased P concentration in leaves, while dose of 40 Gy decreased it [60]. Also, treatment with all Zn ion and ZnO NPs concentrations resulted in significant decline in seedling P levels [61].…”

Section: Mineralsmentioning

confidence: 99%

“…In this respect, there is fast dissolution of Zn ions from ZnO nanoparticles, same nominal concentrations of ZnO NPs as well as Zn ions. This will facilitate the plants to be exposed to similar concentrations of Zn ions released from ZnO NPs as well as Zn ions [61].…”

Section: Mineralsmentioning

confidence: 99%

Physiological Assessment of Radiation and PVP/ Zn-Nanoparticles on Sour Orange Seedling

Hamed

Salah

Ahmed

et al. 2019

AJAHR

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Aims: The objective of this study is evaluate the effects of both pre-sowing gamma irradiation at low dose of 0 or 20 Gy and the soaking part of radiated seeds in zinc nanoparticles (Zn NPs) solutions at rate 0, 500, 1000 and 2000 ppm on behavior and physiological changes of sour orange seedling. Study Design: The design of the study is Two-Way Randomized Blocks. Place and Duration of Study: The present study was carried out during two successive seasons of 2016-2017 and 2017-2018 on sour orange rootstock (Citrus aurantium) grown at the experimental farm of the Horticulture Institute, Giza , Egypt. Methodology: Eight different treatments were used as follow: 1) Control, 2) Gamma radiation at 0 Gy + soaking in Zn NPs at 500 ppm. 3) Gamma radiation at 0 Gy + soaking in Zn NPs at 1000 ppm. 4) Gamma radiation at 0 Gy + soaking in Zn NPs at 2000 ppm. 5) Gamma radiation at 20 Gy + soaking in tap water Zn NPs at 0 ppm. 6) Gamma radiation at 20 Gy + soaking in Zn NPs at 500 ppm. 7) Gamma radiation at 20 Gy + soaking in Zn NPs at 1000 ppm. 8) Gamma radiation at 20 Gy + soaking in Zn NPs at 2000 ppm. Results: Transmission electron microscope (TEM) images showed multiple shapes and uniform distribution of Zn NPs through the polymer network and the mean size of Zn NPs ranging is 40.9 nm. Generally, the results reveal that, 20 Gy combined with 1000ppm Zn NPs treatment increased seed germination percentage and stem length. While, 20 Gy plus 500 ppm Zn NPs treatment increased stem diameter and plant pigments concentration. Protein analysis of sour orange seedling treated with gamma radiation and then Zn NPs showed that, protein groups pattern (10-20 KD) enhanced with gamma rays 20 gray alone or with Zn NPs at 500 or 1000 ppm, while the protein groups pattern above 60 KD disappeared. Conclusion: Using gamma irradiation and then soaking part of irradiated seeds in Zn NPs solutions had significant effects on vegetative growth and root characters as well as some chemical properties of sour orange leaves. In addition, there are variable differences in the protein pattern between treated and untreated sour orange seedlings with gamma radiation and / or Zn NPs. Although, 20 Gy + 500 ppm Zn NPs treatment increased stem diameter, which is the main characteristic for the success of grafting process, the obtained results showed changes in proteins and it possible the gene structure had been changed due to this treatment.

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Regulation of morphological, molecular and nutrient status in Arabidopsis thaliana seedlings in response to ZnO nanoparticles and Zn ion exposure

Cited by 88 publications

References 67 publications

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

Fractal based complexity analysis of wheat root system under different heavy metals

Physiological Assessment of Radiation and PVP/ Zn-Nanoparticles on Sour Orange Seedling

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