Journal ArticleDOI
Physiological response of culture media-grown barley (Hordeum vulgare L.) to titanium oxide nanoparticles
Lucia Kořenková,Martin Šebesta,Martin Urík,Marek Kolenčík,Gabriela Kratošová,Marek Bujdoš,Ivo Vávra,Edmund Dobročka +7 more
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TLDR
It appears that early root growth is a relevant indicator of potential effects of nTiO2 exposure, and synthesized n TiO2 are not significantly toxic to the barley when applied at the concentrations used in this work, even though plants absorb titanium.Abstract:
Since the fate of nanoparticles after their release in the environment and their possible transfer in plants and subsequent impacts is still largely unknown, this paper evaluates the potential phytotoxic effects of up to 20% w/w TiO2 nanoparticles (nTiO2) on barley cultivated in hydroponics and agar media. The X-ray diffraction analysis confirmed that nTiO2 powder corresponds to anatase phase. On agar medium only high concentrations of nTiO2 (10% and 20% w/w) induced significant inhibition of shoot growth. However, hydroponics treatment with nTiO2 up to 1000 mg L−1 did not show any adverse effect on the shoot growth. In both experiments, (i) root growth inhibition effects became visible with increasing concentration of nTiO2, (ii) plants treated with nTiO2 showed no change in chlorophyll a and b content, even though the plants absorbed nTiO2, (iii) weight of biomass treated with nTiO2 was not significantly different compared to control. Therefore, we assume that transport of nTiO2 into the aerial ...read more
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Titanium as a Beneficial Element for Crop Production
Shiheng Lyu,Xiangying Wei,Xiangying Wei,Jianjun Chen,Jianjun Chen,Cun Wang,Xiaoming Wang,Dongming Pan +7 more
TL;DR: It is proposed that the beneficial roles Ti plays in plants lie in its interaction with other nutrient elements primarily iron (Fe), thereby enhancing Fe uptake and utilization and subsequently improving plant growth.
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Metabolomics analysis of TiO2 nanoparticles induced toxicological effects on rice (Oryza sativa L.)
TL;DR: The results suggest that the metabolism of rice plants is distinctly disturbed after exposure to nano-TiO2, and nano- TiO2 would have a mixed effect on the yield and quality of rice.
Journal ArticleDOI
Foliar Application of Low Concentrations of Titanium Dioxide and Zinc Oxide Nanoparticles to the Common Sunflower under Field Conditions.
Marek Kolenčík,Marek Kolenčík,Dávid Ernst,Martin Urík,Ľuba Ďurišová,Marek Bujdoš,Martin Šebesta,Edmud Dobročka,Samuel Kšiňan,Ramakanth Illa,Yu Qian,Huan Feng,Ivan Černý,Veronika Holišová,Gabriela Kratošová +14 more
TL;DR: It is established that the ZnO-NPs treatment induced generally better sunflower physiological responses, while the TiO2-NBP treatment primarily affected quantitative and nutritional parameters such as oil content and changed sunflower physiology to early maturation.
Journal ArticleDOI
Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector
Eva Kranjc,Damjana Drobne +1 more
TL;DR: Using adverse effect level concentrations and data on ENM accumulation in environmental matrices, the literature analyses revealed that C-, Ag-, Ce-, and Ti-based ENMs are unlikely to pose a risk to plants grown under typical field conditions, whereas Cu- and Zn- based ENMs require surveillance.
Journal ArticleDOI
Exposure–Response of Wheat Cultivars to TiO2 Nanoparticles in Contrasted Soils
Zahra Zahra,Muhammad Arif Ali,Amna Parveen,EunBi Kim,Muhammad Fahim Khokhar,Sofia Baig,Kiran Hina,Hyung-Kyoon Choi,Muhammad Arshad +8 more
TL;DR: In this article, the authors investigated the exposure-response of 10 wheat cultivars to titanium dioxide (TiO2) NPs (0-1000 mg kg−1) in terms of early growth parameters followed by evaluation of the selected cultivar for complete growth cycle cultivated on contrasted soils in termsof various physicochemical characteristics.
References
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Anatase TiO(2) single crystals with a large percentage of reactive facets
Hua Gui Yang,Chenghua Sun,Shi-Zhang Qiao,Jin Zou,Gang Liu,Sean C. Smith,Hui-Ming Cheng,Gao Qing Lu +7 more
TL;DR: This work synthesized uniform anatase TiO2 single crystals with a high percentage (47 per cent) of {001} facets using hydrofluoric acid as a morphology controlling agent and demonstrates that for fluorine-terminated surfaces this relative stability is reversed.
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Titanium dioxide nanoparticles: a review of current toxicological data
TL;DR: itanium dioxide (TiO2) nanoparticles (NPs) are manufactured worldwide in large quantities for use in a wide range of applications and there is an enormous lack of epidemiological data regarding TiO2 NPs in spite of its increased production and use.
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Consistent sets of spectrophotometric chlorophyll equations for acetone, methanol and ethanol solvents.
TL;DR: A set of equations for determining chlorophyll a (Chl a) and accessory chlorophyLLs b, c2, c1 + c2 and the special case of Acaryochloris marina, which uses Chl d as its primary photosynthetic pigment and also has Chl a, have been developed for 90% acetone, methanol and ethanol solvents.
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Bandgap studies on anatase titanium dioxide nanoparticles
TL;DR: In this article, X-ray diffraction and transmission electron microscopy were used to characterize the structural properties of anatase nano-drone nano-dioxide and showed a blue shift in the absorption edge of the diffuse reflectance ultraviolet spectrum.
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Cyto- and genotoxicity of ultrafine TiO2 particles in cultured human lymphoblastoid cells.
TL;DR: The results of this study indicate that UF-TiO(2) can cause genotoxicity and cytotoxicity in cultured human cells.