The Improvement of Spinach Growth by Nano-anatase TiO2 Treatment Is Related to Nitrogen Photoreduction

Yang, Fan; Liu, Chao; Gao, Fengqing; Su, Mingyu; Xiao, Wei; Zheng, Lei; Hong, Fashui; Yang, Ping

doi:10.1007/s12011-007-0046-4

Cited by 267 publications

(107 citation statements)

References 16 publications

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“…Similar results were achieved in TiO 2 -NPs (2.5-40 g·kg -1 soil) that improve the growth of spinach by enhancing photosynthesis in leaves and nitrogen-fixation capability in roots (Yang et al 2007). …”

Section: Effect Of Nps Of Tio 2 and Zno On Growth Survival And Totalsupporting

confidence: 68%

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Goodarzi¹,

Noor²,

Ahmadloo³

2017

J. For. Sci.

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Goodarzi G.R., Payam Noor V., Ahmadloo F. (2017): Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed. J. For. Sci., 63: 408-416.We examined the effects of nanoparticles (NPs) of TiO 2 and ZnO at 0.5, 1, 2 or 3% concentrations for 10, 20, and 30 min in stratified seeds of Prunus mahaleb Linnaeus. Then, seedlings produced were irrigated to field capacity with NP solutions at control, 1, 5, and 10% concentration for 7 months in the greenhouse conditions. Treating seeds at 1% concentrations of TiO 2 -NPs for 20 min resulted in the highest germination percentage (65%) and at concentrations of 3% for 30 min it showed the lowest germination percentage (13%). The highest total seedling height was obtained after exposure of seeds to 0.5% TiO 2 -NPs for 10 min. Irrigation of seedlings with TiO 2 -NPs at the concentration of 1% seems to be a suitable method how to increase their total height, survival, and total dry weight. A decrease in the relative water content and an increase in proline were observed in response to the application of high levels of NPs.

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Section: Effect Of Nps Of Tio 2 and Zno On Growth Survival And Totalsupporting

confidence: 68%

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Goodarzi¹,

Noor²,

Ahmadloo³

2017

J. For. Sci.

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“…destabilization of the ecosystems and trophic transfer, but also on their potential transfer to the food chain via plant ingestion. The literature relating NP toxicity and accumulation in plants is scarce; authors mostly relate NP inhibitory effects on seed germination and root elongation [2][3][4]. A few studies relate NP uptake by plant roots [3,5], and root to shoot transfer [5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of titanium dioxide nanoparticles toxicity and uptake by plants

Larue

Khodja

Herlin‐Boime

et al. 2011

J. Phys.: Conf. Ser.

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Abstract. Nanoparticles (NP) are introduced in a growing number of commercial products and their production may lead to their release in the environment. Plants may be a potential entry point for NP in the food chain. Up to now, results describing NP phytotoxical effects and plant accumulation are scarce and contradictory. To increase knowledge on titanium dioxide NP (TiO 2 -NPs) accumulation and impact on plants, we designed a study on three plant species, namely wheat (Triticum aestivum), oilseed rape (Brassica napus) and Arabidopsis thaliana. These plants were exposed in hydroponics to a panel of well-characterized TiO 2 -NPs, with diameters ranging from 12 to 140 nm, either anatase or rutile. Their accumulation in plant tissues is currently being assessed by complementary imaging techniques: scanning electron microscopy (SEM), transmission electron microscopy (TEM), micro-X-ray fluorescence (SR-µ-XRF) imaging and microparticle induced X-ray emission (µ-PIXE) imaging. Moreover, the impact of TiO 2 -NP exposure on germination rate, root elongation, dry biomass and evapotranspiration is evaluated. Preliminary results are presented here, with data collected on wheat plants exposed to 12 nm and 25 nm anatase TiO 2 -NPs. These results show that TiO 2 -NPs are taken up by plants, and do not significantly alter their germination and root elongation. These results underline the necessity of deeper evaluation of nanoparticle ecotoxicity, and particularly on their interaction with plants.

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“…Although titanium does not belong to essential plant nutrients, application of TiO 2 NPs was found to improve plant-photosynthesis efficacy, increase plant-enzyme activity and provide plants with more N nutrient by chemical fixation of N 2 in the air, thereby enhancing plant growth [272][273][274][275]. A significant increase in RuBisCo (ribulose-1,5-bisphosphate carboxylase/oxygenase) activity (by up to 2.33-fold in comparison to the control) in the nano-anatase-TiO 2 -treated spinach was recorded, while treatment with bulk TiO 2 had no such notable effect.…”

Section: Nanofertilizers and Plant Growth Stimulating Nanoparticlesmentioning

confidence: 99%

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

Jampílek

Kráľová

2015

Ecological Chemistry and Engineering S

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Nanoagrochemicals, such as nanopesticides, nanofertilizers or plant growth stimulating nanosystems, were primarily designed to increase solubility, enhance bioavailability, targeted delivery, controlled release and/or protection against degradation resulting in the reduced amount of applied active ingredients and finally in a decrease of dose-dependent toxicity/burden. This paper is a comprehensive up-to-date review related to the preparation and the biological activity of nanoformulations enabling gradual release of active ingredient into weeds and the body of pests and controlled release of nutrients to plants. The attention is also devoted to the decrease of direct environmental burden and economic benefits due to application of nanoformulations, where less amount of active ingredient is needed to achieve the same biological effect in comparison with bulk. The application of nanotechnology in the areas such as food packaging, food security, encapsulation of nutrients and development of new functional products is analysed. The use of nanoparticles in biosensors for detection of pathogens and contaminants as well as in DNA and gene delivery is discussed as well. Benefits and health risks of nanoagrochemicals are highlighted, and special attention is given to nanoecotoxicology and guidelines and regulatory documents related to the use of nanoformulations in agriculture and food industry.

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The Improvement of Spinach Growth by Nano-anatase TiO2 Treatment Is Related to Nitrogen Photoreduction

Cited by 267 publications

References 16 publications

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Investigation of titanium dioxide nanoparticles toxicity and uptake by plants

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

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