Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions

Zhou, Dongmei; Jin, Sheng-Yang; Li, Lianzhen; Wang, Yu; Weng, Nanyan

doi:10.1016/s1001-0742(10)60646-8

Cited by 86 publications

(42 citation statements)

References 10 publications

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“…Highest cellular AuNP concentration of 21.36 lg/g fresh weight was recorded at 100 ppm. Increase in intracellular CuO nanoparticle concentration, with increasing CuO nanoparticle exposure has been reported by Zhou et al (2011). Brassica is known to be a metal hyperaccumulator with significant metal accumulation being reported for Zn (Rossi et al 2002) and nano-gold (Anderson et al 1998).…”

Section: Uptake Of Gold-nanoparticlesmentioning

confidence: 97%

Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

et al. 2012

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Experiments were carried out to determine the effect of Gold-nanoparticles on the growth profile and yield of Brassica juncea, under field conditions. Five different concentrations (0, 10, 25, 50 and 100 ppm) of Goldnanoparticles were applied through foliar spray. Presence of Gold-nanoparticles in the leaf tissues was confirmed through atomic absorption spectroscopy. Various growth and yield related parameters, including plant height, stem diameter, number of branches, number of pods, seed yield etc. were positively affected by the nanoparticle treatment. Gold-nanoparticle treatment increased the number of leaves per plant; however the average leaf area was not affected. Optimal increase in seed yield was recorded at 10 ppm of Gold-nanoparticle treatment. Reducing as well as total sugar contents increased up to 25 ppm of Goldnanoparticle treatment. Application of nanoparticles also improved the redox status of the treated plants. The results, for the first time, demonstrate successful use of Goldnanoparticles in enhancing growth and yield of B. juncea, under actual field conditions and present a viable alternative to GM crops for ensuring food security.

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Section: Uptake Of Gold-nanoparticlesmentioning

confidence: 97%

Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

et al. 2012

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“…This could be explained having in mind that the total Zn concentration measured in the roots consisted of both internal Zn and Zn adsorbed to the root surface. The ultrasonic washing of the roots minimized but did not eliminate the Zn adsorbed (Zhou et al 2011) and hence the Zn root concentration could overestimate the Zn uptake depending on the Zn compound. Although NPs adsorbed to plant roots can also exert physical or chemical toxicity on the plants (Capaldi Arruda et al 2015), the differences observed between ZnONPs and ZnCl 2 could be explained by differences in the ratio between absorbed and adsorbed Zn in roots exposed to these Zn molecules.…”

Section: Zn In Plantsmentioning

confidence: 99%

Integrating ecotoxicity and chemical approaches to compare the effects of ZnO nanoparticles, ZnO bulk, and ZnCl2 on plants and microorganisms in a natural soil

García‐Gómez¹,

Babín²,

Obrador³

et al. 2015

Environ Sci Pollut Res

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This work compared the toxicity of ZnO nanoparticles (ZnO-NPs), ZnO bulk, and ZnCl2 on microbial activity (C and N transformations and dehydrogenase and phosphatase activities) and their uptake and toxic effects (emergence, root elongation, and shoot growth) on three plant species namely wheat, radish, and vetch in a natural soil at 1000 mg Zn kg(-1). Additionally, plants were also tested at 250 mg Zn kg(-1). The effects of the chemical species on Zn extractability in soil were studied by performing single and sequential extractions. ZnCl2-1000 presented the highest toxicity for both taxonomic groups. For microorganisms, ZnO-NPs demonstrated adverse effects on all measured parameters, except on N transformations. The effects of both ZnO forms were similar. For plants, ZnO-NPs affected the growth of more plant species than ZnO bulk, although the effects were small in all cases. Regarding accumulation, the total Zn amounts were higher in plants exposed to ZnO-NP than those exposed to ZnO bulk, except for vetch shoots. The soil sequential extraction revealed that the Zn concentration in the most labile forms (water soluble (WS) and exchangeable (EX)) was similar in soil treated with ZnO (NP and bulk) and lower than that of ZnCl2-treated soil, indicating the higher availability of the ionic forms. The strong correlations obtained between WS-Zn fraction and the Zn concentrations in the roots, shoots, and the effects on shoot weight show the suitability of this soil extraction method for predicting bioavailable Zn soil for the three plant species when it was added as ZnO-NPs, ZnO bulk, or ZnCl2. In this work, the hazard associated with the ZnO-NPs was similar to ZnO bulk in most cases.

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“…For example, although most studies have been conducted in solution hydroponics, some studies have investigated the uptake of MNMs suspended in solid agar-like media (Lee et al, 2008;Zhou et al, 2011). How this might affect uptake and comparisons between studies using these different media is unclear, but one study examining the uptake of 2.8 nm TiO 2 MNMs from both solid and liquid media observed uptake in the liquid media, but not in the solid media (Kurepa et al, 2010).…”

Section: Hydroponic Studies Examining Root Uptakementioning

confidence: 99%

Bioavailability, Toxicity, and Fate of Manufactured Nanomaterials in Terrestrial Ecosystems

Judy

Bertsch

2014

Advances in Agronomy

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Quantifying the adsorption and uptake of CuO nanoparticles by wheat root based on chemical extractions

Cited by 86 publications

References 10 publications

Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

Integrating ecotoxicity and chemical approaches to compare the effects of ZnO nanoparticles, ZnO bulk, and ZnCl2 on plants and microorganisms in a natural soil

Bioavailability, Toxicity, and Fate of Manufactured Nanomaterials in Terrestrial Ecosystems

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