Copper oxide (CuO) nanoparticles affect yield, nutritional quality, and auxin associated gene expression in weedy and cultivated rice (Oryza sativa L.) grains

Deng, Chaoyi; Wang, Yi; Navarro, Gilberto; Sun, Youping; Cota-Ruíz, Keni; Hernández-Viezcas, José Á.; Niu, Genhua; Li, Chunqiang; White, Jason C.; Gardea‐Torresdey, Jorge L.

doi:10.1016/j.scitotenv.2021.152260

Cited by 45 publications

(25 citation statements)

References 59 publications

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“…As expected, our data show that the effects of core–shell nanostructures on plant development (e.g., photosynthesis, element content, and fresh biomass) are plant species specific. This is in agreement with a plethora of studies published that show plant specificity in terms of agrichemical type and dose. − It is worth noting that in this proof of concept field study, we selected two important commodity crops as model plants, soybean (dicot) and wheat (monocot) and no effort was made to design plant specific model nanostructures and/or select plant specific agrichemical(s) and dose to optimize grain yield. One of the possible reasons for the different behavior of soybean and wheat is that soybean can benefit from Rhizobium and fix N in the root-based nodules .…”

Section: Resultssupporting

confidence: 81%

Enhancing Agrichemical Delivery and Plant Development with Biopolymer-Based Stimuli Responsive Core–Shell Nanostructures

Wang

Aytaç

et al. 2022

ACS Nano

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The inefficient delivery of agrichemicals in agrifood systems is among the leading cause of serious negative planetary and public health impacts. Such inefficiency is mainly attributed to the inability to deliver the agrichemicals at the right place (target), right time, and right dose. In this study, scalable, biodegradable, sustainable, biopolymer-based multistimuli responsive core−shell nanostructures were developed for smart agrichemical delivery. Three types of responsive core/ shell nanostructures incorporated with model agrichemicals (i.e., CuSO 4 and NPK fertilizer) were synthesized by coaxial electrospray, and the resulting nanostructures showed spherical morphology with an average diameter about 160 nm. Tunable agrichemical release kinetics were achieved by controlling the surface hydrophobicity of nanostructures. The pH and enzyme responsiveness was also demonstrated by the model analyte release kinetics (up to 7 days) in aqueous solution. Finally, the efficacy of the stimuli responsive nanostructures was evaluated in soil-based greenhouse studies using soybean and wheat in terms of photosynthesis efficacy and linear electron flow (LEF), two important metrics for seedling development and health. Findings confirmed plant specificity; for soybean, the nanostructures resulted in 34.3% higher value of relative chlorophyll content and 41.2% higher value of PS1 centers in photosystem I than the ionic control with equivalent agrichemical concentration. For wheat, the nanostructures resulted in 37.6% higher value of LEF than the ionic agrichemicals applied at 4 times higher concentration, indicating that the responsive core−shell nanostructure is an effective platform to achieve precision agrichemical delivery while minimizing inputs. Moreover, the Zn and Na content in the leaves of 4-week-old soybean seedlings were significantly increased with nanostructure amendment, indicating that the developed nanostructures can potentially be used to modulate the accumulation of other important micronutrients through a potential biofortification strategy.

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Section: Resultssupporting

confidence: 81%

Enhancing Agrichemical Delivery and Plant Development with Biopolymer-Based Stimuli Responsive Core–Shell Nanostructures

Wang

Aytaç

et al. 2022

ACS Nano

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“…This indicated that, at the tested concentrations, ZnO and CuO NPs application promoted the biomass production of Medicago polymorpha L., and the concentration tested were not toxic for biomass production of Medicago polymorpha L. compared with Zn 2+ and Cu 2+ . Previous studies demonstrated that the toxicological effects of metal oxide NPs were dependent on the metal oxide particle size and treatment concentrations ( Deng et al, 2020 ; Deng et al, 2022 ). For example, Deng et al (2020) reported that CuO NPs (75–600 mg kg −1 ) caused more physiological impairments compared with bulk CuO and Cu 2+ in bok choy.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, exposure to 50 and 500 mg kg −1 CuO NPs resulted in 36.2 and 21.1% decreases in the total amino acid content, respectively ( Rui et al, 2018 ). Deng et al (2022) reported that CuO NPs at 75 mg kg −1 significantly decreased the grain yield of cultivated rice by 38.3%, and CuO NPs at ≥300 mg kg −1 caused no grain production of rice. More alarmingly, Zn and Cu released by ZnO and CuO NPs may be enriched in the edible part of crops, which may threaten human health through their consumption ( Rajput et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that the effect of CuO NPs on plant growth and nutrient uptake was different from that of Cu NPs ( Hong et al, 2015 ). In addition, the response of plants to NPs was species-dependent ( Deng et al, 2022 ; Tan et al, 2018 ). Although Medicago sativa L. and Medicago polymorpha L. are classified to the same genus, they are different species ( Ren, Wei & Chen, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

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Effect of ZnO and CuO nanoparticles on the growth, nutrient absorption, and potential health risk of the seasonal vegetable Medicago polymorpha L.

Guo

Wang

et al. 2022

PeerJ

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Background Medicago polymorpha L., a seasonal vegetable, is commonly grown in China. The increasing use of nanoparticles (NPs) such as ZnO and CuO NPs in agriculture has raised concerns about their potential risks for plant growth and for human consumption. There is a lack of research on the effects of ZnO and CuO NPs on agronomic performance of Medicago polymorpha L. and their potential risks for human health. Methods In this study, different treatment concentrations of ZnO NPs (25, 50, 100, and 200 mg kg−1) and CuO NPs (10, 25, 50, and 100 mg kg−1) were used to determine their effects on the growth and nutrient absorption of Medicago polymorpha L., as well as their potential risk for human health. Results The results showed that ZnO and CuO NPs increased the fresh weight of Medicago polymorpha L. by 5.8–11.8 and 3.7–8.1%, respectively. The best performance for ZnO NPs occurred between 25–50 mg kg−1 and the best performance for CuO NPs occurred between 10–25 mg kg−1. Compared with the control, ZnO and CuO NPs improved the macronutrients phosphorus (P), potassium (K), magnesium (Mg), and calcium (Ca). The following micronutrients were also improved: iron (Fe), nickel (Ni), copper (Cu), zinc (Zn), and manganese (Mn), with the exception of nitrogen (N) accumulation. Low treatment concentrations exhibited more efficient nutrient uptake than high treatment concentrations. A comprehensive analysis showed that the optimum concentrations were 25 mg kg−1 for ZnO NPs and 10 mg kg−1 for CuO NPs. The potential non-carcinogenic health risk of Medicago polymorpha L. treated with ZnO and CuO NPs was analyzed according to the estimated daily intake (EDI), the hazard quotient (HQ), and the cumulative hazard quotient (CHQ). Compared with the oral reference dose, the EDI under different ZnO and CuO NPs treatments was lower. The HQ and CHQ under different ZnO and CuO NPs treatments were far below 1. This indicated that Medicago polymorpha L. treated with ZnO and CuO NPs did not pose any non-carcinogenic health risk to the human body. Therefore, ZnO and CuO NPs were considered as a safe nano fertilizer for Medicago polymorpha L. production according to growth analysis and a human health risk assessment.

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“…It has been established that Cu-based NPs have the ability to alter element accumulation in plants. − Foliar application of NPs in the form of nanopesticides and nanofertilizers has been increasingly employed in agriculture. Leaves and roots vary in physiological function; therefore, absorption of NPs differs between these organs.…”

Section: Results and Discussionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi Alleviate Phytotoxic Effects of Copper-Based Nanoparticles/Compounds in Spearmint (Mentha spicata)

Apodaca

Cota-Ruíz

Hernández-Viezcas

et al. 2022

ACS Agric. Sci. Technol.

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In this study, spearmint plants inoculated with arbuscular mycorrhizal (AM) fungi were sprayed with 0.66 and 1.05 mg (“low” and “high”) of elemental Cu per pot from Cu(OH)2 nanowires, bulk Cu(OH)2 (Kocide 3000), or ionic CuSO4. After a 50-day growth period spearment plants were harvested for argonomical, biochemical, and elemental analysis. Accumulation of Cu was highest in the roots (149.40–427.03 mg kg–1). In general, Cu-based nanoparticles (NPs)/compounds were toxic, inhibiting plant growth and element accumulation. The root biomass and length were reduced by up to 8.38 g and 11.80 cm or 59.92 and 48.15%, respectively. A majority of alterations in element accumulation occurred in the leaves, with significant decreases in Mg (≤10.47 mg kg–1 or 22.59%), Mn (≤0.77 mg kg–1 or 39.77%), and Zn (≤0.20 mg kg–1 or 37.03%), from the respective controls. Mycorrhization alleviated Cu toxicity, most notably in the roots, where interactive effects were observed under application of AM fungi and Cu-based NPs/compounds for root biomass and length. An interactive effect found between the absence of AM fungi and presence of Cu-based NPs/compounds resulted in an influx of leaf Na content (0.70–1.13 mg kg–1, or 219.74–355.07%, increase from the corresponding control), which can be seen as an indicator of Cu-induced stress. Overall, bulk Cu-based compounds had the greatest impact over nano or ionic Cu-based compounds, with interactive effects in root accumulation of Cu (decrease by AM fungi + bulk Cu) and leaf accumulation of Mg and Mn (decrease by AM fungi + bulk Cu). Our research confirms that (1) Cu-based NPs/compounds can be phytotoxic to spearmint plants and (2) inoculation with AM fungi can alleviate Cu toxicity to spearmint. This study demonstrates that plant–microbe interactions could improve crop productivity and provide environmental benefits, emphasizing the need for risk assessment of crop systems incorporating symbiotic microorganisms.

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Copper oxide (CuO) nanoparticles affect yield, nutritional quality, and auxin associated gene expression in weedy and cultivated rice (Oryza sativa L.) grains

Cited by 45 publications

References 59 publications

Enhancing Agrichemical Delivery and Plant Development with Biopolymer-Based Stimuli Responsive Core–Shell Nanostructures

Enhancing Agrichemical Delivery and Plant Development with Biopolymer-Based Stimuli Responsive Core–Shell Nanostructures

Effect of ZnO and CuO nanoparticles on the growth, nutrient absorption, and potential health risk of the seasonal vegetable Medicago polymorpha L.

Arbuscular Mycorrhizal Fungi Alleviate Phytotoxic Effects of Copper-Based Nanoparticles/Compounds in Spearmint (Mentha spicata)

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