Role of Cerium Compounds in Fusarium Wilt Suppression and Growth Enhancement in Tomato (Solanum lycopersicum)

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Ishaq O. Adisa
Venkata L. Reddy Pullagurala
Swati Rawat
Jose A. Hernandez-Viezcas
Christian O. Dimkpa
Wade H. Elmer
Jason C. White
Jose R. Peralta-Videa
Jorge L. Gardea-Torresdey
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The use of nanoparticles in plant protection may reduce pesticide usage and contamination and increase food security. In this study, three-week-old Solanum lycopersicum seedlings were exposed, by root or foliar pathways, to CeO2 nanoparticles and cerium acetate at 50 and 250 mg/L prior to transplant into sterilized soil. One week later, the soil was inoculated with the fungal pathogen Fusarium oxysporum f. sp. lycopersici (1 g/kg), and the plants were cultivated to maturity in a greenhouse. Disease severity, biomass/yield, and biochemical and physiological parameters were analyzed in harvested plants. Disease severity was significantly reduced by 250 mg/L of nano-CeO2 and CeAc applied to the soil (53% and 35%, respectively) or foliage (57% and 41%, respectively), compared with non treated infested controls. Overall, the findings show that nano-CeO2 has potential to suppress Fusarium wilt and improve the chlorophyll content in tomato plants.
Adisa IO, Reddy Pullagurala VL, Rawat S, Hernandez-Viezcas JA, Dimkpa CO, Elmer WH, White JC, Peralta-Videa JR, Gardea-Torresdey JL. Role of Cerium Compounds in Fusarium Wilt Suppression and Growth Enhancement in Tomato ( Solanum lycopersicum). J Agric Food Chem. 2018 Jun 20;66(24):5959-5970. doi: 10.1021/acs.jafc.8b01345. Epub 2018 Jun 12. PMID: 29856619.