Interaction of Carbohydrate Coated Cerium-Oxide Nanoparticles with Wheat and Pea: Stress Induction Potential and Effect on Development

ALGARRA, MANUEL; MAKSIMOVIC, VUK; RADOTIC, KSENIJA; MITROVIC, ALEKSANDRA; RODRÍGUEZ-CASTELLÓN, ENRIQUE; BESKOSKI, VLADIMIR P.; MILENKOVIC, IVANA; LÁZARO-MARTÍNEZ, JUAN M.; SPASIC, SLADANA Z.

Plants

MDPI

Lugar: Basel; Año: 2019 vol. 8 p. 478 - 498

Reports about the influence of cerium-oxide nanoparticles (nCeO2) on plants are contradictorydue to their positive and negative effects on plants. Surface modification may affect the interaction ofnCeO2 with the environment, and hence its availability to plants. In this study, the uncoated and glucose-,levan-, and pullulan-coated nCeO2 were synthesized and characterized. The aim was to determinewhether nontoxic carbohydrates alter the eect of nCeO2 on the seed germination, plant growth,and metabolism of wheat and pea. We applied 200 mgL􀀀1 of nCeO2 on plants during germination(Ger treatment) or three week-growth (Gro treatment) in hydroponics. The plant response to nCeO2was studied by measuring changes in Ce concentration, total antioxidative activity (TAA), totalphenolic content (TPC), and phenolic profile. Our results generally revealed higher Ce concentrationin plants after the treatment with coated nanoparticles compared to uncoated ones. Considering allobtained results, Ger treatment had a stronger impact on the later stages of plant development thanGro treatment. The Ger treatment had a stronger impact on TPC and plant elongation, whereas Grotreatment aected more TAA and phenolic profile. Among nanoparticles, levan-coated nCeO2 hadthe strongest and positive impact on tested plants. Wheat showed higher sensitivity to all treatments.