Differential Effects of Cerium Oxide Nanoparticles on Rice, Wheat, and Barley Roots: A Fourier Transform Infrared (FT-IR) Microspectroscopy Study

Rico, Cyren M.; Peralta-Videa, José R.; Gardea‐Torresdey, Jorge L.

doi:10.1366/14-07495

Cited by 51 publications

(28 citation statements)

References 40 publications

(87 reference statements)

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“…For this reason, we focused on both Ce and macronutrient accumulation in barley kernels. In agreement with the findings from López-Moreno et al (2010), Zhao et al (2015), and Rico et al (2015), we did not observe any significant difference among the treatments for kernel Ce concentrations. Our results suggest that translocation of nCeO2 into barley kernels is rather unlikely.…”

Section: Barley Life Cycle and Cerium Accumulationsupporting

confidence: 91%

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Engineered nanomaterials and crops: physiology and growth of barley as affected by nanoscale cerium oxide

et al. 2016

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In recent years, remarkable progress has been made in developing nanotechnology. This has led to a fast-growth of commercial applications, which involve the use of a great variety of manufactured nanomaterials. Given that, soils and sediments are the ultimate sinks of engineered nanomaterials (ENMs), they can be taken up by microorganisms, nematodes, earthworms or plants, and potentially transferred to the food chain up to animals and humans. However, the reactions of the biota exposed to ENMs of different size are still not well understood. Very few studies on nanoparticles-plant interactions have been published, so far. In this paper we report the results of multiple experiments carried out to study the effects of cerium oxide nanoparticles (nCeO2) on Hordeum vulgare. The nCeO2 powder and suspension were characterised for specific surface area, z-average size, and zeta potential. Germinating caryopses and barley seedlings were exposed to an aqueous dispersion of nCeO2 at respectively 0, 500, 1000 and 2000 mg L -1 . Data on root elongation, mitotic index and cerium concentration in seedlings were collected. Plants of barley were grown to physiological maturity in soil enriched with respectively 500 and 1000 mg kg -1 of nCeO2. We reported that seed germination was not affected by the nCeO2, however, signals of genotoxicity were evidenced by mitotic index coupled with a shortage of root elongation. In the life-cycle experiment although no toxicity symptoms were detected, we demonstrated that barley growth was affected by nCeO2.

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Section: Barley Life Cycle and Cerium Accumulationsupporting

confidence: 91%

“…Zhao et al (2013) did not observe negative effects on biometric parameters in plants of Cucumis sativum with nCeO2. On the opposite, Rico et al (2015) reported that nCeO2 500 mg kg -1 increased the height of barley plants and promoted the accumulation of DM in plant shoots.…”

Section: Barley Life Cycle and Cerium Accumulationmentioning

confidence: 95%

Engineered nanomaterials and crops: physiology and growth of barley as affected by nanoscale cerium oxide

et al. 2016

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“…Alterations were also observed in the DNA/RNA region (∼950 cm −1 ) at both sites, which may suggest exposure to genotoxic agents. 14,35 In addition, peaks associated with terpenes 36 were discovered at both sites (1447 cm −1 in Site 2 leaves, 1369 and 1454 cm −1 in Site 3 leaves). Several terpenes, particularly carotenoids are known to function as scavengers of ROS, 37 implying that leaves from polluted sites may have been exposed to higher ROS levels, possibly as a result of increased pollution exposure.…”

Section: Resultsmentioning

confidence: 93%

Spectrochemical analysis of sycamore (Acer pseudoplatanus) leaves for environmental health monitoring

Ord

Butler

McAinsh

et al. 2016

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Terrestrial plants are ideal sentinels of environmental pollution, due to their sedentary nature, abundance and sensitivity to atmospheric changes. However, reliable and sensitive biomarkers of exposure have hitherto been difficult to characterise. Biospectroscopy offers a novel approach to the derivation of biomarkers in the form of discrete molecular alterations detectable within a biochemical fingerprint. We investigated the application of this approach for the identification of biomarkers for pollution exposure using the common sycamore (Acer pseudoplatanus) as a sentinel species. Attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy was used to interrogate leaf tissue collected from three sites exposed to different levels of vehicle exhaust emissions. Following multivariate analysis of acquired spectra, significant biochemical alterations were detected between comparable leaves from different sites that may constitute putative biomarkers for pollution-induced stress. These included differences in carbohydrate and nucleic acid conformations, which may be indicative of sub-lethal exposure effects. We also observed several corresponding spectral alterations in both the leaves of A. pseudoplatanus exposed to ozone pollution under controlled environmental conditions and in leaves infected with the fungal pathogen Rhytisma acerinum, indicating that some stress-induced changes are conserved between different stress signatures. These similarities may be indicative of stress-induced reactive oxygen species (ROS) generation, although further work is needed to verify the precise identity of infrared biomarkers and to identify those that are specific to pollution exposure. Taken together, our data clearly demonstrate that biospectroscopy presents an effective toolkit for the utilisation of higher plants, such as A. pseudoplatanus, as sentinels of environmental pollution.

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“…Further analysis indicated that nCeO 2 caused genotoxic effects in soybean . Germination also was unaffected by nCeO 2 in rice ( Oryza sativa ), wheat ( Triticum aestivum ), and barley ( Hordeum vulgare ) . Tumburu et al found accelerated germination and early seedling development in Arabidopsis thaliana with nCeO 2 treatment.…”

Section: Resultsmentioning

confidence: 99%

Germination and early plant development of ten plant species exposed to titanium dioxide and cerium oxide nanoparticles

Andersen

King

Plocher

et al. 2016

Enviro Toxic and Chemistry

130

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Ten agronomic plant species were exposed to different concentrations of nano-titanium dioxide (nTiO2 ) or nano-cerium oxide (nCeO2 ) (0 μg/mL, 250 μg/mL, 500 μg/mL, and 1000 μg/mL) to examine potential effects on germination and early seedling development. The authors modified a standard test protocol developed for soluble chemicals (OPPTS 850.4200) to determine if such an approach might be useful for screening engineered nanomaterials (ENMs) and whether there were differences in response across a range of commercially important plant species to 2 common metal oxide ENMs. Eight of 10 species responded to nTiO2 , and 5 species responded to nCeO2 . Overall, it appeared that early root growth may be a more sensitive indicator of potential effects from ENM exposure than germination. The observed effects did not always relate to the exposure concentration, indicating that mass-based concentration may not fully explain the developmental effects of these 2 ENMs. The results suggest that nTiO2 and nCeO2 have different effects on early plant growth of agronomic species, with unknown effects at later stages of the life cycle. In addition, standard germination tests, which are commonly used for toxicity screening of new materials, may not detect the subtle but potentially more important changes associated with early growth and development in terrestrial plants. Environ Toxicol Chem 2016;35:2223-2229. Published 2016 Wiley Periodicals Inc. on behalf of SETAC. This article is a US Government work and, as such, is in the public domain in the United States of America.

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Differential Effects of Cerium Oxide Nanoparticles on Rice, Wheat, and Barley Roots: A Fourier Transform Infrared (FT-IR) Microspectroscopy Study

Cited by 51 publications

References 40 publications

Engineered nanomaterials and crops: physiology and growth of barley as affected by nanoscale cerium oxide

Engineered nanomaterials and crops: physiology and growth of barley as affected by nanoscale cerium oxide

Spectrochemical analysis of sycamore (Acer pseudoplatanus) leaves for environmental health monitoring

Germination and early plant development of ten plant species exposed to titanium dioxide and cerium oxide nanoparticles

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