Influence of two types of organic matter on interaction of CeO2 nanoparticles with plants in hydroponic culture

Schwabe, Franziska; Schulin, Rainer; Limbach, Ludwig K.; Stark, Wendelin J.; Bürge, Diane; Nowack, Bernd

doi:10.1016/j.chemosphere.2012.12.025

Cited by 168 publications

(129 citation statements)

References 41 publications

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“…Notably, the authors hypothesize that root exudate mediated dissolution of nanoparticles precedes ion uptake, subsequently followed by in planta reduction to nanoceria and/or biotransformed products. Similarly, Schwabe et al 77 observed plant exudate induced changes in solution pH, nanoceria agglomeration and particle size. However, they reported no phytotoxicity to pumpkin and wheat after 8-day exposure at 100 mg/l nanoceria; no cerium was detected in wheat shoots but minimal translocation in pumpkin yielded tissue levels of 15 mg/kg (60-450 times less than root content).…”

Section: Hydroponic Exposures In Plantsmentioning

confidence: 99%

Environmental release, fate and ecotoxicological effects of manufactured ceria nanomaterials

Collin

Auffan

Johnson

et al. 2014

Environ. Sci.: Nano

105

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uses. This has led to a number of publications on the toxicological effects of nanoceria in ecological receptor species, but only limited information is available on possible environmental releases, concentrations in environmental media, or environmental transformations. Increasing material flows of nanoceria in many applications is likely to result in increasing releases to air, water and soils however; insufficient information was available to estimate aquatic exposures that would result in acute or chronic toxicity. The purpose of this review is to identify which areas are lacking in data to perform either regional or site specific ecological risk assessments. While estimates can be made for releases from use as a diesel fuel additive, and predicted toxicity is low in most terrestrial species tested to date, estimates for releases from other uses are difficult at this stage. We

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Section: Hydroponic Exposures In Plantsmentioning

confidence: 99%

Environmental release, fate and ecotoxicological effects of manufactured ceria nanomaterials

Collin

Auffan

Johnson

et al. 2014

Environ. Sci.: Nano

105

View full text Add to dashboard Cite

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“…Previous reports have also indicated root adsorption of CeO 2 -NPs and a lack of root-to-shoot translocation of Ce in wheat. 2,3,30,31 Micro X-ray absorption near edge spectroscopy (μXANES) analysis of Ce hotspots revealed that Ce was bound as CeO 2 maintaining the original CeO 2 -NP coordination (IV). Ce adsorbed on wheat root surfaces was 92-98% CeO 2 -NPs with small amount of Ce 3+ species (3-7%), whereas, Ce aggregated on soil particles was estimated to be 86-94% CeO 2 -NPs with small fraction in ionic Ce 3+ form (4-12%).…”

Section: Localization and In Situ Speciation Of Ce In Soil Columnsmentioning

confidence: 99%

Intergenerational responses of wheat (Triticum aestivum L.) to cerium oxide nanoparticles exposure

Rico

Johnson

Marcus

et al. 2017

Environ. Sci.: Nano

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The intergenerational impact of engineered nanomaterials in plants is a key knowledge gap in the literature. A soil microcosm study was performed to assess the effects of multi-generational exposure of wheat (Triticum aestivum L.) to cerium oxide nanoparticles (CeO 2 -NPs). Seeds from plants that were exposed to 0, 125, and 500 mg CeO 2 -NPs kg −1 soil (Ce-0, Ce-125 or Ce-500, respectively) in first generation (S1) were cultivated in factorial combinations of Ce-0, Ce-125 or Ce-500 to produce second generation (S2) plants.The factorial combinations for first/second generation treatments in Ce-125 were S1-Ce-0/S2-Ce-0, S1-Ce-0/S2-Ce-125, S1-Ce-125/S2-Ce-0 and S1-Ce-125/S2-Ce-125, and in Ce-500 were S1-Ce-0/S2-Ce-0, S1-Ce-0/S2-Ce-500, S1-Ce-500/S2-Ce-0 and S1-Ce-500/S2-Ce-500. Agronomic, elemental, isotopic, and synchrotron X-ray fluorescence (XRF) and X-ray absorption near-edge spectroscopy (XANES) data were collected on second generation plants. Results showed that plants treated during the first generation only with either Ce-125 or Ce-500 (e.g. S1-Ce-125/S2-Ce-0 or S1-Ce-500/S2-Ce-0) had reduced accumulation of Ce (61 or 50%), Fe (49 or 58%) and Mn (34 or 41%) in roots, and δ 15 N (11 or 8%) in grains compared to the plants not treated in both generations (i.e. S1-Ce-0/S2-Ce-0). Plants treated in both generations with Ce-125 (i.e. S1-Ce-125/S2-Ce-125) produced grains that had lower Mn, Ca, K, Mg and P relative to plants treated in the second generation only (i.e. S1-Ce-0/S2-Ce-125). In addition, synchrotron XRF elemental chemistry maps of soil/plant thin-sections revealed limited transformation of CeO 2 -NPs with no evidence of plant uptake or accumulation. The findings demonstrated that first generation exposure of wheat to CeO 2 -NPs affects the physiology and nutrient profile of the second generation plants. However, the lack of concentration-dependent responses indicate that complex physiological processes are involved which alter uptake and metabolism of CeO 2 -NPs in wheat.

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“…In addition, reports from recent investigations have shown a wide variety of plant responses after exposure to CeO 2 NPs. For instance, Schwabe (2013) found that CeO 2 NP treatments did not reduced the growth in pumpkin and wheat. However, Ma et al (2010) reported that, at 2000 mg/L, nano-CeO 2 reduced root elongation in lettuce (Lactuca sativa).…”

Section: Introductionmentioning

confidence: 99%

Alginate modifies the physiological impact of CeO2 nanoparticles in corn seedlings cultivated in soil

Zhao

Peralta-Videa

Peng

et al. 2014

Journal of Environmental Sciences

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a b s t r a c tAlginates are naturally occurring components of organic matter in natural soil whose effects on nanoparticles (NPs) toxicity to plants is not well understood. In the present study, corn plants were grown for one month in soil spiked with 400 mg/kg CeO 2 NPs with various alginate concentrations. After one month of growth in the NPs impacted soil, plants were harvested and analyzed for Ce and mineral element concentrations. Chlorophyll concentration and heat shock protein 70, used as biomarkers for oxidative stress, were also evaluated. Results showed that, compared to CeO 2 NPs treatment, alginate at 10, 50, and 100 mg/kg increased Ce concentration in roots by approximately 46%, 38%, and 29% and by 115%, 45%, and 56% in shoots, respectively. CeO 2 NPs without alginate increased Mn accumulation in roots by 34% compared to control. CeO 2 NPs with low and medium alginate increased Mn by ca. 92% respect to NPs without alginate and by ca. 155% respect to control. CeO 2 NPs without/with alginate significantly increased accumulation of Fe and Al in roots. In addition, alginate at 50 mg/kg increased Zn accumulation in roots by 52% compared to control. In shoots, K increased at all NP treatments but the accumulation of other elements was not affected. Alginate enlarged the impact of CeO 2 NPs to corn plants by reducing chlorophyll a content and triggering overexpression of heat shock protein 70.

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Influence of two types of organic matter on interaction of CeO2 nanoparticles with plants in hydroponic culture

Cited by 168 publications

References 41 publications

Environmental release, fate and ecotoxicological effects of manufactured ceria nanomaterials

Environmental release, fate and ecotoxicological effects of manufactured ceria nanomaterials

Intergenerational responses of wheat (Triticum aestivum L.) to cerium oxide nanoparticles exposure

Alginate modifies the physiological impact of CeO2 nanoparticles in corn seedlings cultivated in soil

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