Polyvinylpyrrolidone-coated copper nanoparticles dose-dependently conferred tolerance to wheat under salinity and/or drought stress by improving photochemical activity and antioxidant system

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dc.contributor.authorEkim, Rumeysa
dc.contributor.authorArikan, Busra
dc.contributor.authorAlp-Turgut, Fatma Nur
dc.contributor.authorKoyukan, Buket
dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorYildiztugay, Evren
dc.date.accessioned2024-02-23T14:02:52Z
dc.date.available2024-02-23T14:02:52Z
dc.date.issued2024
dc.departmentNEÜen_US
dc.description.abstractCopper (Cu) is one of the essential micronutrients for plants and has been used extensively in agricultural ap-plications from the past to the present. However, excess copper causes toxic effects such as inhibiting photo-synthesis, and disrupting biochemical processes in plants. Nanotechnology applications have offered a critical method for minimizing adverse effects and improving the effectiveness of copper nanoparticles. For this purpose, this study investigated the physiological and biochemical effects of polyvinylpyrrolidone (PVP)-coated Cu nanoparticles (PVP-Cu NP, N1, 100 mg L-1; N2, 400 mg L-1) in Triticum aestivum under alone or combined with salt (S, 150 mM NaCl) and/or drought (D, %10 PEG-6000) stress. Salinity and water deprivation caused 51% and 22% growth retardation in wheat seedlings. The combined stress condition (S + D) resulted in an approximately 3-fold reduction in the osmotic potential of the leaves. PVP-Cu NP treatments to plants under stress, especially N1 dose, were effective in restoring growth rate and regulating water relations. All stress treatments limited gas exchange in stomata and suppressed the maximal quantum yield of PSII (Fv/Fm). More than 50% improvement was observed in stomatal permeability and carbon assimilation rate under S + N1 and S + N2 applications. Examination of OJIP transient parameters revealed that N1 treatments protected photochemical reactions by reducing the dissipated energy flux (DIo/RC) in drought and S + D conditions. Exposure to S and/or D stress caused high hydrogen peroxide (H2O2) accumulation and lipid peroxidation in wheat leaves. The results indi-cated that S + N1 and S + N2 treatments reduced oxidative damage by stimulating the activities of antioxidant enzymes superoxide dismutase (SOD), peroxidase (POX), and ascorbate peroxidase (APX). Although similar ef-fects were observed at D and S + D conditions with 100 mg L-1 PVP-Cu NP treatments (N1), the curative effect of the N2 dose was not observed. In D + N1 and S + D + N1 groups, AsA regeneration and GSH redox status were maintained by triggering APX, GR, and other enzyme activities belonging to the AsA-GSH cycle. In these groups, N2 treatment did not contribute to the availability of enzymatic and non-enzymatic antioxidants. As a result, this study revealed that N1 dose PVP-Cu NP application was successful in providing stress tolerance and limiting copper-induced adverse effects under all stress conditions.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects Coordinating Office [22201039]en_US
dc.description.sponsorshipThis work was supported by the Selcuk University Scientific Research Projects Coordinating Office (Grant Number: 22201039) and conducted within the scope of Rumeysa Ekim's master thesis. We would like to thank Assoc. Prof. Dr. Halit Cavusoglu, who contributed to the synthesis of PVP-coated copper nanoparticles used in the current study.en_US
dc.identifier.doi10.1016/j.envres.2023.117681
dc.identifier.issn0013-9351
dc.identifier.issn1096-0953
dc.identifier.pmid37984786en_US
dc.identifier.scopus2-s2.0-85177892595en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.envres.2023.117681
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11863
dc.identifier.volume241en_US
dc.identifier.wosWOS:001127862700001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofEnvironmental Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAntioxidant Systemen_US
dc.subjectDroughten_US
dc.subjectPvp-Coated Cu Nanoparticleen_US
dc.subjectSalinityen_US
dc.subjectTriticum Aestivumen_US
dc.titlePolyvinylpyrrolidone-coated copper nanoparticles dose-dependently conferred tolerance to wheat under salinity and/or drought stress by improving photochemical activity and antioxidant systemen_US
dc.typeArticleen_US

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