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Servin AD, Pagano L, Castillo-Michel H, De la Torre-Roche R, Hawthorne J, Hernandez-Viezcas JA, Loredo-Portales R, Majumdar S, Gardea-Torresday J, Dhankher OP, White JC. Weathering in soil increases nanoparticle CuO bioaccumulation within a terrestrial food chain. Nanotoxicology 2017; 11:98-111. [PMID: 28024451 DOI: 10.1080/17435390.2016.1277274] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 12/01/2016] [Accepted: 12/13/2016] [Indexed: 10/20/2022]
Abstract
This study evaluates the bioaccumulation of unweathered (U) and weathered (W) CuO in NP, bulk and ionic form (0-400 mg/kg) by lettuce exposed for 70 d in soil co-contaminated with field incurred chlordane. To evaluate CuO trophic transfer, leaves were fed to crickets (Acheta domestica) for 15 d, followed by insect feeding to lizards (Anolis carolinensis). Upon weathering, the root Cu content of the NP treatment increased 214% (327 ± 59.1 mg/kg) over unaged treatment. Cu root content decreased in bulk and ionic treatments from 70-130 mg/kg to 13-26 mg/kg upon aging in soil. Micro X-ray fluorescence (μ-XRF) analysis of W-NP-exposed roots showed a homogenous distribution of Cu (and Ca) in the tissues. Additionally, micro X-ray absorption near-edge (μ-XANES) analysis of W-NP-exposed roots showed near complete transformation of CuO to Cu (I)-sulfur and oxide complexes in the tissues, whereas in unweathered treatment, most root Cu remained as CuO. The expression level of nine genes involved in Cu transport shows that the mechanisms of CuO NPs (and bulk) response/accumulation are different than ionic Cu. The chlordane accumulation by lettuce upon co-exposure to CuO NPs significantly increased upon weathering. Conversely, bulk and ionic exposures decreased pesticide accumulation by plant upon weathering. The Cu cricket fecal content from U-NP-exposed insects was significantly greater than the bulk or ion treatments, suggesting a higher initial NP accumulation followed by significantly greater elimination during depuration. In the lizard, Cu content in the intestine, body and head did not differ as a function of weathering. This study demonstrates that CuO NPs may undergo transformation processes in soil upon weathering that subsequently impact NPs availability in terrestrial food chains.
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Affiliation(s)
- Alia D Servin
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
| | - Luca Pagano
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
- b Stockbridge School of Agriculture, University of Massachusetts , Amherst , MA , USA
- c Department of Life Sciences , University of Parma , Parma , Italy
| | | | - Roberto De la Torre-Roche
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
| | - Joseph Hawthorne
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
| | | | - René Loredo-Portales
- f Universidad de Guanajuato Noria Alta s/n 36000 , Guanajuato , Mexico
- g Elettra Sincrotrone Trieste , Basovizza , Italy
| | - Sanghamitra Majumdar
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
| | - Jorge Gardea-Torresday
- e Chemistry Department , University of Texas at El Paso , El Paso , TX , USA
- h University of California Center for Environmental Implications of Nanotechnology (UC CEIN) , El Paso , TX , USA
| | - Om Parkash Dhankher
- b Stockbridge School of Agriculture, University of Massachusetts , Amherst , MA , USA
| | - Jason C White
- a Department of Analytical Chemistry , Connecticut Agricultural Experiment Station , New Haven , CT , USA
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Servin AD, De la Torre-Roche R, Castillo-Michel H, Pagano L, Hawthorne J, Musante C, Pignatello J, Uchimiya M, White JC. Exposure of agricultural crops to nanoparticle CeO 2 in biochar-amended soil. Plant Physiol Biochem 2017; 110:147-157. [PMID: 27288265 DOI: 10.1016/j.plaphy.2016.06.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/27/2016] [Accepted: 06/01/2016] [Indexed: 06/06/2023]
Abstract
Biochar is seeing increased usage as an amendment in agricultural soils but the significance of nanoscale interactions between this additive and engineered nanoparticles (ENP) remains unknown. Corn, lettuce, soybean and zucchini were grown for 28 d in two different soils (agricultural, residential) amended with 0-2000 mg engineered nanoparticle (ENP) CeO2 kg-1 and biochar (350 °C or 600 °C) at application rates of 0-5% (w/w). At harvest, plants were analyzed for biomass, Ce content, chlorophyll and lipid peroxidation. Biomass from the four species grown in residential soil varied with species and biochar type. However, biomass in the agricultural soil amended with biochar 600 °C was largely unaffected. Biochar co-exposure had minimal impact on Ce accumulation, with reduced or increased Ce content occurring at the highest (5%) biochar level. Soil-specific and biochar-specific effects on Ce accumulation were observed in the four species. For example, zucchini grown in agricultural soil with 2000 mg CeO2 kg-1 and 350 °C biochar (0.5-5%) accumulated greater Ce than the control. However, for the 600 °C biochar, the opposite effect was evident, with decreased Ce content as biochar increased. A principal component analysis showed that biochar type accounted for 56-99% of the variance in chlorophyll and lipid peroxidation across the plants. SEM and μ-XRF showed Ce association with specific biochar and soil components, while μ-XANES analysis confirmed that after 28 d in soil, the Ce remained largely as CeO2. The current study demonstrates that biochar synthesis conditions significantly impact interactions with ENP, with subsequent effects on particle fate and effects.
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Affiliation(s)
- Alia D Servin
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States
| | - Roberto De la Torre-Roche
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States
| | | | - Luca Pagano
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States; Department of Life Sciences, University of Parma, 43124, Parma, Italy
| | - Joseph Hawthorne
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States
| | - Craig Musante
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States
| | - Joseph Pignatello
- Department of Environmental Sciences, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States
| | | | - Jason C White
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, 06511, United States.
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