title: Cerium oxide nanoparticles impact yield and modify nutritional parameters in wheat (Triticum aestivum L.).
abstract: The implications of engineered nanomaterials on crop productivity and food quality are not yet well understood. The impact of cerium oxide nanoparticles (nCeO2) on growth and yield attributes and nutritional composition in wheat (Triticum aestivum L.) was examined. Wheat was cultivated to grain production in soil amended with 0, 125, 250, and 500 mg of nCeO2/kg (control, nCeO2-L, nCeO2-M, and nCeO2-H, respectively). At harvest, grains and tissues were analyzed for mineral, fatty acid, and amino acid content. Results showed that, relative to the control, nCeO2-H improved plant growth, shoot biomass, and grain yield by 9.0%, 12.7%, and 36.6%, respectively. Ce accumulation in roots increased at increased nCeO2 concentration but did not change across treatments in leaves, hull, and grains, indicating a lack of Ce transport to the above-ground tissues. nCeO2 modified S and Mn storage in grains. nCeO2-L modified the amino acid composition and increased linolenic acid by up to 6.17% but decreased linoleic acid by up to 1.63%, compared to the other treatments. The findings suggest the potential of nanoceria to modify crop physiology and food quality with unknown consequences for living organisms.
authors.affiliation: Department of Chemistry, ‡University of California Center for Environmental Implications of Nanotechnology, and ∥Environmental Science and Engineering Doctoral Program, The University of Texas at El Paso , 500 West University Avenue, El Paso Texas 79968, United States.
authors.forename: Cyren M
authors.initials: CM
authors.lastname: Rico
authors.forename: Sang Chul
authors.initials: SC
authors.lastname: Lee
authors.forename: Rosnah
authors.initials: R
authors.lastname: Rubenecia
authors.forename: Arnab
authors.initials: A
authors.lastname: Mukherjee
authors.forename: Jie
authors.initials: J
authors.lastname: Hong
authors.forename: Jose R
authors.initials: JR
authors.lastname: Peralta-Videa
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Gardea-Torresdey
mesh_terms: D000596:Amino Acids / Q000032:analysis; D018533:Biomass; D002563:Cerium / Q000493:pharmacokinetics / Q000494:pharmacology*; D005227:Fatty Acids / Q000032:analysis; D008345:Manganese / Q000032:analysis / Q000378:metabolism; D008903:Minerals / Q000378:metabolism; D053758:Nanoparticles; D009753:Nutritive Value; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development; D012987:Soil; D014018:Tissue Distribution; D014908:Triticum / Q000187:drug effects* / Q000254:growth & development / Q000502:physiology*; D017962:alpha-Linolenic Acid / Q000032:analysis / Q000378:metabolism
chemical_list: D000596:Amino Acids; D005227:Fatty Acids; D008903:Minerals; D012987:Soil; D017962:alpha-Linolenic Acid; D002563:Cerium; D008345:Manganese; C030583:ceric oxide
keywords: amino acids; cerium oxide nanoparticles; engineered nanomaterials; fatty acids; wheat