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Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum sativum L.): A Life Cycle Study.
Front Plant Sci. 2015; 6:1242.FP

Abstract

The effect of surface or lattice modification of nanoparticles (NPs) on terrestrial plants is poorly understood. We investigated the impact of different zinc oxide (ZnO) NPs on green pea (Pisum sativum L.), one of the highest consumed legumes globally. Pea plants were grown for 65 d in soil amended with commercially available bare ZnO NPs (10 nm), 2 wt% alumina doped (Al2O3@ZnO NPs, 15 nm), or 1 wt% aminopropyltriethoxysilane coated NPs (KH550@ZnO NP, 20 nm) at 250 and 1000 mg NP/kg soil inside a greenhouse. Bulk (ZnO) and ionic Zn (zinc chloride) were included as controls. Plant fresh and dry biomass, changes in leaf pigment concentrations, elements (Zn, Al, Si), and protein and carbohydrate profile of green pees were quantified upon harvest at 65 days. With the exception of the coated 1000 mg/kg NP treatment, fresh and dry weight were unaffected by Zn exposure. Although, all treated plants showed higher tissue Zn than controls, those exposed to Al2O3@ZnO NPs at 1000 mg/kg had greater Zn concentration in roots and seeds, compared to bulk Zn and the other NP treatments, keeping Al and Si uptake largely unaffected. Higher Zn accumulation in green pea seeds were resulted in coated ZnO at 250 mg/kg treatments. In leaves, Al2O3@ZnO NP at 250 mg/kg significantly increased Chl-a and carotenoid concentrations relative to the bulk, ionic, and the other NP treatments. The protein and carbohydrate profiles remained largely unaltered across all treatments with the exception of Al2O3@ZnO NPs at 1000 mg/kg where sucrose concentration of green peas increased significantly, which is likely a biomarker of stress. Importantly, these findings demonstrate that lattice and surface modification can significantly alter the fate and phytotoxic effects of ZnO NPs in food crops and seed nutritional quality. To the authors' knowledge, this is the first report of a life cycle study on comparative toxicity of bare, coated, and doped ZnO NPs on a soil-grown food crop.

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Authors+Show Affiliations

Mukherjee A
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA.
Sun Y
Texas A&M AgriLife Research Center at El Paso El Paso, TX, USA.
Morelius E
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA.
Tamez C
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA.
Bandyopadhyay S
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA.
Niu G
Texas A&M AgriLife Research Center at El Paso El Paso, TX, USA.
White JC
Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station New Haven, CT, USA.
Peralta-Videa JR
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA; Department of Chemistry, The University of Texas at El PasoEl Paso, TX, USA.
Gardea-Torresdey JL
Environmental Science and Engineering, The University of Texas at El PasoEl Paso, TX, USA; University of California Center for Environmental Implications of Nanotechnology, The University of Texas at El PasoEl Paso, TX, USA; Department of Chemistry, The University of Texas at El PasoEl Paso, TX, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26793219

Citation

Mukherjee, Arnab, et al. "Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum Sativum L.): a Life Cycle Study." Frontiers in Plant Science, vol. 6, 2015, p. 1242.
Mukherjee A, Sun Y, Morelius E, et al. Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum sativum L.): A Life Cycle Study. Front Plant Sci. 2015;6:1242.
Mukherjee, A., Sun, Y., Morelius, E., Tamez, C., Bandyopadhyay, S., Niu, G., White, J. C., Peralta-Videa, J. R., & Gardea-Torresdey, J. L. (2015). Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum sativum L.): A Life Cycle Study. Frontiers in Plant Science, 6, 1242. https://doi.org/10.3389/fpls.2015.01242
Mukherjee A, et al. Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum Sativum L.): a Life Cycle Study. Front Plant Sci. 2015;6:1242. PubMed PMID: 26793219.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differential Toxicity of Bare and Hybrid ZnO Nanoparticles in Green Pea (Pisum sativum L.): A Life Cycle Study. AU - Mukherjee,Arnab, AU - Sun,Youping, AU - Morelius,Erving, AU - Tamez,Carlos, AU - Bandyopadhyay,Susmita, AU - Niu,Genhua, AU - White,Jason C, AU - Peralta-Videa,Jose R, AU - Gardea-Torresdey,Jorge L, Y1 - 2016/01/12/ PY - 2015/08/28/received PY - 2015/12/21/accepted PY - 2016/1/22/entrez PY - 2016/1/23/pubmed PY - 2016/1/23/medline KW - ZnO nanoparticles KW - bare KW - coated KW - dissolution KW - doped KW - phytotoxicity KW - seed quality SP - 1242 EP - 1242 JF - Frontiers in plant science JO - Front Plant Sci VL - 6 N2 - The effect of surface or lattice modification of nanoparticles (NPs) on terrestrial plants is poorly understood. We investigated the impact of different zinc oxide (ZnO) NPs on green pea (Pisum sativum L.), one of the highest consumed legumes globally. Pea plants were grown for 65 d in soil amended with commercially available bare ZnO NPs (10 nm), 2 wt% alumina doped (Al2O3@ZnO NPs, 15 nm), or 1 wt% aminopropyltriethoxysilane coated NPs (KH550@ZnO NP, 20 nm) at 250 and 1000 mg NP/kg soil inside a greenhouse. Bulk (ZnO) and ionic Zn (zinc chloride) were included as controls. Plant fresh and dry biomass, changes in leaf pigment concentrations, elements (Zn, Al, Si), and protein and carbohydrate profile of green pees were quantified upon harvest at 65 days. With the exception of the coated 1000 mg/kg NP treatment, fresh and dry weight were unaffected by Zn exposure. Although, all treated plants showed higher tissue Zn than controls, those exposed to Al2O3@ZnO NPs at 1000 mg/kg had greater Zn concentration in roots and seeds, compared to bulk Zn and the other NP treatments, keeping Al and Si uptake largely unaffected. Higher Zn accumulation in green pea seeds were resulted in coated ZnO at 250 mg/kg treatments. In leaves, Al2O3@ZnO NP at 250 mg/kg significantly increased Chl-a and carotenoid concentrations relative to the bulk, ionic, and the other NP treatments. The protein and carbohydrate profiles remained largely unaltered across all treatments with the exception of Al2O3@ZnO NPs at 1000 mg/kg where sucrose concentration of green peas increased significantly, which is likely a biomarker of stress. Importantly, these findings demonstrate that lattice and surface modification can significantly alter the fate and phytotoxic effects of ZnO NPs in food crops and seed nutritional quality. To the authors' knowledge, this is the first report of a life cycle study on comparative toxicity of bare, coated, and doped ZnO NPs on a soil-grown food crop. SN - 1664-462X UR - https://www.unboundmedicine.com/medline/citation/26793219/Differential_Toxicity_of_Bare_and_Hybrid_ZnO_Nanoparticles_in_Green_Pea__Pisum_sativum_L__:_A_Life_Cycle_Study_ DB - PRIME DP - Unbound Medicine ER -