Changes in Physiological and Agronomical Parameters of Barley ( Hordeum vulgare ) Exposed to Cerium and Titanium Dioxide Nanoparticles

Luca Marchiol, Alessandro Mattiello, Filip Pošćić, Guido Fellet, Costanza Zavalloni, Elvio Carlino and Rita Musetti
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Luca Marchiol: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy
Alessandro Mattiello: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy
Filip Pošćić: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy
Guido Fellet: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy
Costanza Zavalloni: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy
Elvio Carlino: IOM-CNR Laboratorio TASC, Area Science Park Basovizza, Bld MM, SS 14, Km 163.5, 34149 Trieste, Italy
Rita Musetti: DI4A—Department of Agriculture, Food, Environment and Animal Sciences—University of Udine, via delle Scienze 206, I-33100 Udine, Italy

IJERPH, 2016, vol. 13, issue 3, 1-18

Abstract: The aims of our experiment were to evaluate the uptake and translocation of cerium and titanium oxide nanoparticles and to verify their effects on the growth cycle of barley ( Hordeum vulgare L.). Barley plants were grown to physiological maturity in soil enriched with either 0, 500 or 1000 mg·kg ?1 cerium oxide nanoparticles ( n CeO 2 ) or titanium oxide nanoparticles ( n TiO 2 ) and their combination. The growth cycle of n CeO 2 and n TiO 2 treated plants was about 10 days longer than the controls. In n CeO 2 treated plants the number of tillers, leaf area and the number of spikes per plant were reduced respectively by 35.5%, 28.3% and 30% ( p ? 0.05). n TiO 2 stimulated plant growth and compensated for the adverse effects of n CeO 2 . Concentrations of Ce and Ti in aboveground plant fractions were minute. The fate of nanomaterials within the plant tissues was different. Crystalline n TiO 2 aggregates were detected within the leaf tissues of barley, whereas n CeO 2 was not present in the form of nanoclusters.

Keywords: cerium oxide nanoparticles; titanium oxide nanoparticles; barley; plant growth; food chain (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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