Foliar spray application of CuO nanoparticles (NPs) and S-nitrosoglutathione enhances productivity, physiological and biochemical parameters of lettuce plants

Author(s)

Pelegrino, Milena T. ^[1] ; Pieretti, Joana C. ^[1] ; Lange, Camila Neves ^[1] ; Kohatsu, Marcio Yukihiro ^[2] ; Freire, Bruna Moreira ^[1] ; Batista, Bruno Lemos ^[1] ; Fincheira, Paola ^{[3, 4]} ; Tortella, Gonzalo R. ^{[3, 4]} ; Rubilar, Olga ^[3] ; Seabra, Amedea B. ^[1]

Affiliation

^[1] Univ Fed ABC, Ctr Nat & Human Sci, Santo Andre, SP - Brazil

^[2] Univ Fed ABC, Ctr Engn Modeling & Appl Social Sci, Santo Andre, SP - Brazil

^[3] Univ La Frontera, Dept Chem Engn, Temuco - Chile

^[4] Univ La Frontera, Ctr Excelencia Invest Biotecnol Aplicada Medio Am, Temuco - Chile

• Document type: Journal article
• Source: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY; v. 96, n. 8, p. 2185-2196, AUG 2021.
• Web of Science Citations: 2

Abstract

BACKGROUND Green-tea-synthesized copper oxide nanoparticles (CuO NPs) and S-nitrosoglutathione (GSNO), a nitric oxide (NO) donor, were applied individually and in combination to lettuce leaves. We aimed to investigate whether a combined application of CuO NPs and GSNO might enhance plant growth when compared to individual treatments and the control group. RESULTS Spherical CuO NPs (13.4 +/- 0.1 nm) at 50 mu g mL(-1) and/or GSNO at 100 mu mol L-1 were individually and simultaneously sprayed onto lettuces leaves. All treatments had a positive effect on plant growth, and the administration of CuO NPs + GSNO promoted a threefold increase in lettuce dry weight. The treatments did not change plant transpiration, and all treatments enhanced instantaneous carboxylation efficiency compared to control. In the roots, all treatments enhanced the levels of S-nitrosothiol in the following order: CuO NPs < GSNO < CuO NPs + GSNO. Administration of GSNO significantly increased total phenolic content (twofold) and flavonoid content (fourfold) compared to the control group. All treatments increased the leaf levels of K, Na, Ca, Mg and S compared to the control group. CONCLUSION All treatments promoted positive effects on lettuce growth, and no oxidative damage was observed, under the experimental conditions evaluated. A combined administration of CuO NPs and GSNO enhanced important physiological, biochemical and nutritional parameters of lettuces. (c) 2021 Society of Chemical Industry (AU)

• FAPESP's process: 18/08194-2 - Essential oil amended with metal nanoparticles functionalized with nitric oxide as a strategy to control plant pathogens in the agriculture
• Grantee: Amedea Barozzi Seabra
• Support Opportunities: Regular Research Grants
• FAPESP's process: 20/03646-2 - Impact of nanoplatforms allied to nitric oxide and chemotherapeutics on cytotoxicity and sensitization of resistant tumor cells
• Grantee: Joana Claudio Pieretti
• Support Opportunities: Scholarships in Brazil - Doctorate