Flavonoid Naringenin Alleviates Short-Term Osmotic and Salinity Stresses Through Regulating Photosynthetic Machinery and Chloroplastic Antioxidant Metabolism inPhaseolus vulgaris

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dc.contributor.authorYildiztugay, Evren
dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorKucukoduk, Mustafa
dc.contributor.authorTurkan, Ismail
dc.date.accessioned2024-02-23T14:35:00Z
dc.date.available2024-02-23T14:35:00Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractThe current study was conducted to demonstrate the possible roles of exogenously applied flavonoid naringenin (Nar) on the efficiency of PSII photochemistry and the responses of chloroplastic antioxidant of salt and osmotic-stressedPhaseolus vulgaris(cv. Yunus90). For this aim, plants were grown in a hydroponic culture and were treated with Nar (0.1 mM and 0.4 mM) alone or in a combination with salt (100 mM NaCl) and/or osmotic (10% Polyethylene glycol, -0.54 MPa). Both caused a reduction in water content (RWC), osmotic potential (psi(pi)), chlorophyll fluorescence (F-v/F-m), and potential photochemical efficiency (F-v/F-o). Nar reversed the changes on these parameters. The phenomenological fluxes (TRo/CS and ETo/CS) altered by stress were induced by Nar and Nar led to a notable increase in the performance index (PIABS) and the capacity of light reaction [phi P-o/(1-phi P-o)]. Besides, Nar-applied plants exhibited higher specific fluxes values [ABS/RC, ETo/RC, and psi E-o/(1-psi E-o)] and decreasing controlled dissipation of energy (DIo/CS(o)and DIo/RC). The transcripts levels of psbA and psbD were lowered in stress-treated bean but upregulated in Nar-treated plants after stress exposure. Nar also alleviated the changes on gas exchange parameters [carbon assimilation rate (A), stomatal conductance (g(s)), intercellular CO(2)concentrations (C-i), transpiration rate (E), and stomatal limitation (L-s)]. By regulating the antioxidant metabolism of the isolated chloroplasts, Nar was able to control the toxic levels of hydrogen peroxide (H2O2) and TBARS (lipid peroxidation) produced by stresses. Chloroplastic superoxide dismutase (SOD) activity reduced by stresses was increased by Nar. In response to NaCl, Nar increased the activities of ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), and dehydroascorbate reductase (DHAR), as well as peroxidase (POX). Nar protected the bean chloroplasts by minimizing disturbances caused by NaCl exposure via the ascorbate (AsA) and glutathione (GSH) redox-based systems. Under Nar plus PEG, Nar maintained the AsA regeneration by the induction of MDHAR and DHAR, but not GSH recycling by virtue of no induction in GR activity and the reduction in GSH/GSSG and GSH redox state. Based on these advances, Nar protected in bean chloroplasts by minimizing disturbances caused by NaCl or PEG exposure via the AsA or GSH redox-based systems and POX activity.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects Coordinating Office [20401044]en_US
dc.description.sponsorshipFinancial support for this work was provided by the Selcuk University Scientific Research Projects Coordinating Office (Project number: 20401044).en_US
dc.identifier.doi10.3389/fpls.2020.00682
dc.identifier.issn1664-462X
dc.identifier.pmid32582241en_US
dc.identifier.scopus2-s2.0-85086584846en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.3389/fpls.2020.00682
dc.identifier.urihttps://hdl.handle.net/20.500.12452/15844
dc.identifier.volume11en_US
dc.identifier.wosWOS:000543811300001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherFrontiers Media Saen_US
dc.relation.ispartofFrontiers In Plant Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAntioxidant Enzymesen_US
dc.subjectChloroplast Isolationen_US
dc.subjectNaringeninen_US
dc.subjectPhotosynthetic Efficiencyen_US
dc.subjectStressen_US
dc.titleFlavonoid Naringenin Alleviates Short-Term Osmotic and Salinity Stresses Through Regulating Photosynthetic Machinery and Chloroplastic Antioxidant Metabolism inPhaseolus vulgarisen_US
dc.typeArticleen_US

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