Nutritional quality of bean seeds harvested from plants grown in different soils amended with coated and uncoated zinc oxide nanomaterials. Issue 12 (1st November 2017)

• Record Type: Journal Article
• Authors: Medina-Velo, Illya A.; Dominguez, Osvaldo E.; Ochoa, Loren; Barrios, Ana C.; Hernández-Viezcas, Jose A.; White, Jason C.; Peralta-Videa, Jose R.; Gardea-Torresdey, Jorge L.
• Is Part Of: Environmental science. Volume 4:Issue 12(2017)
• Page Start: 2336
• Page End: 2347
• Publication Date: 2017-11-01
• Subjects: Environmental sciences -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c7en00495h
• Languages: English
• ISSNs: 2051-8153

Abstract

Abstract : The effects of coated and uncoated ZnO NMs on bean seeds are affected by the soil conditions. Organic matter-enriched soil enhanced the nutrient quality of the seeds. Abstract : The effects of soil properties on nanomaterial (NM) interactions with plants are not well understood. Bean ( Phaseolus vulgaris ) plants were grown to maturity in natural soil (NS) or organic matter (OM)-enriched soil (ES) amended with either uncoated (Z-COTE), hydrophobically-coated (Z-COTE HP1) ZnO NMs, bulk ZnO, or ZnCl2 at 0–500 mg kg −1 . At harvest, yield and seed nutrient composition were assessed. The soil × compound interaction reduced the maturation time by about 25 days and increased the seed yield (∼155%) in ES, compared to NS. In NS, ZnCl2 at 125 mg kg −1 produced 10% less seed protein than the control, and disregarding the concentration, seeds from ZnCl2 showed the highest relative sugar content (102%, compared with the other compounds), while in NS, seeds from Z-COTE HP1 accumulated the highest relative sugar content (44% more than Z-COTE and ZnCl2 ). In addition, seeds from ES + Z-COTE HP1 had 19% less Zn than the rest of the compounds. In ES, the OM enrichment and reduction in pH enhanced the accumulation of Zn (38%), K (64%), S (44%), P (83%), Mg (86%), Ca (70%), Fe (89%), and Mn (85%), but reduced Mo under Z-COTE HP1 and ZnCl2, in comparison to NS seeds. Compared to the controls, ZnCl2 at 500 mg kg −1 reduced the K content in NS and ES (25% and 13%) but increased the P content in NS (66%). In general, Z-COTE and Z-COTE HP1 affected seed nutritional elements in a similar manner. However, the results indicate that the effects of ZnO NMs in bean plants vary with soil composition.