Environmental behavior, potential phytotoxicity, and accumulation of copper oxide nanoparticles and arsenic in rice plants

Liu, Jing; Dhungana, Birendra; Cobb, George P.

doi:10.1002/etc.3945

Cited by 60 publications

(29 citation statements)

References 121 publications

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“…Copper is seen as the third most important metal due to its daily use, and it is important for most living creatures [85]. Cu is an important micronutrient required by plants and should be administered at very low doses.…”

Section: Copper and Copper Oxide Nanoparticles (Cuo Nps)mentioning

confidence: 99%

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: Copper and Copper Oxide Nanoparticles (Cuo Nps)mentioning

confidence: 99%

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

et al. 2019

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“…The purity of CuO NPs was greater than 97%, and the pH of CuO NP suspensions (2000 mg/L) was 6.36 ± 0.02. Details of the TEM figure and the zeta potential of CuO NP suspensions have been published previously [21].…”

Section: Cuo Np Characterizationmentioning

confidence: 99%

“…As shown in Figure 3B, the SOD activity was significantly upregulated by 166% (p < 0.05) in the rice roots treated with 125 mg/L CuO NPs, but no changes were observed in the rice leaves. Based on previous studies, many factors have been suggested as potential mechanisms of CuO NPs causing phytotoxicity, e.g., DNA damage, metal ions released from NPs, ROS generation, and oxidative stress [21]. Among them, oxidative stress has attracted considerable attention [28,30].…”

Section: Antioxidant Enzyme Activity Of Rice Seedlingsmentioning

confidence: 99%

“…It is conservatively estimated that, from 2020 to 2025, the world will consume at least 200,000-830,000 kg of CuO NPs every year [19]. The high demand and application of CuO NPs will greatly increase the possibility of their release into the environment and bioaccumulation into the food chain through plants, causing potential harm to human health [20,21]. Therefore, it is particularly important to evaluate the phytotoxicity of CuO NPs.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Copper Oxide Nanoparticles on the Growth of Rice (Oryza Sativa L.) Seedlings and the Relevant Physiological Responses

Yang

Xiao

Jiao

et al. 2020

IJERPH

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Rice (Oryza sativa L.), a major staple food for billions of people, was assessed for its phytotoxicity of copper oxide nanoparticle (CuO NPs, size < 50 nm). Under hydroponic condition, seven days of exposure to 62.5, 125, and 250 mg/L CuO NPs significantly suppressed the growth rate of rice seedlings compared to both the control and the treatment of supernatant from 250 mg/L CuO NP suspensions. In addition, physiological indexes associated with antioxidants, including membrane damage and antioxidant enzyme activity, were also detected. Treatment with 250 mg/L CuO NPs significantly increased malondialdehyde (MDA) content and electrical conductivity of rice shoots by 83.4% and 67.0%, respectively. The activity of both catalase and superoxide dismutase decreased in rice leaves treated with CuO NPs at the concentration of 250 mg/L, while the activity of the superoxide dismutase significantly increased by 1.66 times in rice roots exposed to 125 mg/L CuO NPs. The chlorophyll, including chlorophyll a and chlorophyll b, and carotenoid content in rice leaves decreased with CuO NP exposure. Finally, to explain potential molecular mechanisms of chlorophyll variations, the expression of four related genes, namely, Magnesium chelatase D subunit, Chlorophyll synthase, Magnesium-protoporphyrin IX methyltransferase, and Chlorophyllide a oxygenase, were quantified by qRT-PCR. Overall, CuO NPs, especially at 250 mg/L concentration, could affect the growth and development of rice seedlings, probably through oxidative damage and disturbance of chlorophyll and carotenoid synthesis.

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“…The authors concluded their work by fi nding that cellular toxicity of copper nanoparticles and increasing of reactive oxygen nanoparticles are responsible for the effect. Toxicity of copper oxide nanoparticles is also manifested on plants (165). In a complex experiment, Rajput and co-workers described the impact of copper oxide nanoparticles on spring barley (Hordeum sativum) as a representative staple food crop (166).…”

Section: Copper Nanoparticlesmentioning

confidence: 99%

Copper and copper nanoparticles toxicity and their impact on basic functions in the body

Pohanka¹

2019

BLL

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Copper is a biogenic metal having multiple functions in basic processes in organisms and it is common in all kingdoms of life. Limited intake of copper is a problem; however, doses of copper exceeding the recommended alimentary source are problematic as well and toxicity is soon manifested. Impact of copper nanoparticles on human health is another serious issue taken into consideration in this review. Regarding to copper toxicity, neurodegenerative disorders including Alzheimer and Parkinson diseases are suspected to be linked to copper toxicity or copper can contribute to their progression. Wilson and Menke diseases are also described as examples of copper intolerance. This paper is focused on the description, literature survey and discussion of the current knowledge about copper and copper nanoparticles toxicity and their involvement in various pathological processes (Tab. 6, Fig. 2, Ref. 171).

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Environmental behavior, potential phytotoxicity, and accumulation of copper oxide nanoparticles and arsenic in rice plants

Cited by 60 publications

References 121 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

Effects of Copper Oxide Nanoparticles on the Growth of Rice (Oryza Sativa L.) Seedlings and the Relevant Physiological Responses

Copper and copper nanoparticles toxicity and their impact on basic functions in the body

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