Protective role of quercetin and kaempferol against oxidative damage and photosynthesis inhibition in wheat chloroplasts under arsenic stress

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dc.contributor.authorArikan, Busra
dc.contributor.authorYildiztugay, Evren
dc.contributor.authorOzfidan-Konakci, Ceyda
dc.date.accessioned2024-02-23T14:24:39Z
dc.date.available2024-02-23T14:24:39Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractArsenic (As) toxicity negatively impacts plant development, limits agricultural production, and, by entering the food chain, endangers human health. Studies on the use of natural and bioactive molecules in increasing plants' resistance to abiotic stressors, such as As, have gained increasing attention in the last few years. Flavonols are plant secondary metabolites with high potential in stress tolerance due to their roles in signal transmission. Therefore, the focus of this study was to examine the effects of two flavonols, quercetin (Q, 25 mu M) and kaempferol (K, 25 mu M), on growth parameters, photosynthesis, and chloroplastic antioxidant activity in wheat leaves under As stress (100 mu M). As stress reduced the relative growth rate by 50% and relative water content by 25% in leaves. However, applying Q and/or K alleviated the As-induced suppression of growth and water relations. Exogenous phenolic treatments reversed the effects of As toxicity in photochemistry and maintained the photochemical quantum efficiency of the Photosystem II (F-v/F-m). As exposure increased, the H2O2 content in wheat chloroplasts by 42% and high levels of H2O2 accumulation were also observed in guard cells in confocal microscopy images. Analysis of the chloroplastic antioxidant system has shown that Q and K applications increase the activity of antioxidant enzymes, including superoxide dismutase, peroxidase, and ascorbate peroxidase. Phenolic applications have induced the ascorbate-glutathione (AsA-GSH) cycle in charge of the protection of the cellular redox balance in different ways. It has been determined that Q triggers the AsA renewal, and K maintains the GSH pool. As a result, Q and K applications provide tolerance to wheat plants under As stress by increasing the chloroplastic antioxidant system activity and protecting photosynthetic reactions from oxidative damage. This study reveals the potential use of plant phenolic compounds in agricultural systems as a biosafe strategy to enhance plant stress tolerance, hence increasing yield.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects Coordinating Office [21111001]en_US
dc.description.sponsorshipACKNOWLEDGMENTS This work was supported by the Selcuk University Scientific Research Projects Coordinating Office (Grant Number: 21111001) and conducted within the scope of Busra Arikan's doctoral thesis.en_US
dc.identifier.doi10.1111/ppl.13964
dc.identifier.issn0031-9317
dc.identifier.issn1399-3054
dc.identifier.issue4en_US
dc.identifier.pmid37341362en_US
dc.identifier.scopus2-s2.0-85165492008en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1111/ppl.13964
dc.identifier.urihttps://hdl.handle.net/20.500.12452/14045
dc.identifier.volume175en_US
dc.identifier.wosWOS:001019065100001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofPhysiologia Plantarumen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject[Keyword Not Available]en_US
dc.titleProtective role of quercetin and kaempferol against oxidative damage and photosynthesis inhibition in wheat chloroplasts under arsenic stressen_US
dc.typeArticleen_US

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