Selenium (Se) is one of the most important nutrient elements for animal and human health. Agricultural soil Se contents vary significantly from deficient to toxic levels in the world. Development and uses of Se-enriched agricultural products can increase human daily dietary Se intake in Se deficient areas. Oat (Avena sativa) is one of common cereal grains in the world, which is the only cereal containing avenalin protein. Previous studies show that Se accumulation in oat can be significantly affected by the soil Se, but few dealt with different chemical forms of Se including emerging nanoscale elemental Se particles (SeNPs) that show some unique chemical and physical properties in comparing with bulk elemental Se. Thus, this study determined the effects of nanoscale elemental Se treatments of 0, 1, 5, and 10 mg/kg in the soil on Se accumulation in oat grains, compared with bulk elemental Se and sodium selenate (Na2SeO4). The results showed that the soil selenate and the SeNP treatments of 1, 5, and 10 mg/kg significantly increased Se concentrations in gain and other plant tissues. The distribution of Se accumulated in Oat tissues followed a descending order of roots>stems>leaves>grains. While the grain yield and total plant biomass production were reduced with higher soil selenate treatments, the low soil SeNP treatments significantly enhanced the oat grain yield. Bulk elemental Se did not show significant effects on oat grain yield and total biomass production. This study demonstrates that nanoscale elemental Se could be included in Se fertilizers for Se biofortification of Oat.
|Commitee:||Esselman, Elizabeth, Yoon, Kyong-Sup|
|School:||Southern Illinois University at Edwardsville|
|School Location:||United States -- Illinois|
|Source:||MAI 58/01M(E), Masters Abstracts International|
|Keywords:||Elemental, Nano, Oat, Selenate, Selenium, Soil|
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