Carnitine modulates antioxidative defense in ABI2 mutant under salt stress

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dc.contributor.authorGokce, Azime
dc.contributor.authorCetinel, Askim Hediye Sekmen
dc.contributor.authorTurkan, Ismail
dc.date.accessioned2024-08-31T07:46:43Z
dc.date.available2024-08-31T07:46:43Z
dc.date.issued2024
dc.departmentEge Üniversitesien_US
dc.description.abstractCarnitine, a ubiquitous compound in living organisms, fulfills diverse roles in energy metabolism, stress resilience, and detoxification. Its antioxidant and osmolyte traits offer relief to stressed plants. Antagonizing abscisic acid (ABA), carnitine influences ABA-responsive genes. Our study, using Arabidopsis thaliana wild-type Ler. (Landsberg erecta) and ABA-insensitive abi2-1 mutants, explored carnitine's impact on antioxidative responses and ABI2's role in salt-induced carnitine metabolism. The application of 5 mu M carnitine has alleviated the decrease in RWC, shoot weight, and rosette diameter WT plants caused by 80 mM salt stress for 4 days. Carnitine reduced cell membrane damage and salinity effects, evidenced by decreased lipid peroxidation and H2O2. In contrast, the impaired ABI2 of abi2-1, due to deficient phosphatase activity, further exacerbated the inhibitory effect of carnitine on the enzymes of the ascorbate-glutathione cycle, consequently reducing stress mitigation. While abi2-1 mutants exhibited unchanged superoxide dismutase (SOD) activity, they demonstrated increased catalase and peroxidase activity following carnitine treatment under salt stress compared to WT plants. Conversely, wild-type WT plants treated with carnitine exhibited elevated total glutathione content under salt stress, a response not observed in abi2-1 mutants under carnitine treatment. These results underscore the crucial role of ABI2-dependent ABA signaling in regulating plant carnitine metabolism.en_US
dc.description.sponsorshipEge University [2014-FEN-010]; Ege University Research Foundationen_US
dc.description.sponsorshipThis work was supported by the Ege University Research Foundation (2014-FEN-010).en_US
dc.identifier.doi10.1007/s10725-024-01169-3
dc.identifier.issn0167-6903
dc.identifier.issn1573-5087
dc.identifier.scopus2-s2.0-85195646989en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1007/s10725-024-01169-3
dc.identifier.urihttps://hdl.handle.net/11454/104185
dc.identifier.wosWOS:001245935800001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofPlant Growth Regulationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240831_Uen_US
dc.subjectAbi2-1en_US
dc.subjectAntioxidant Enzymesen_US
dc.subjectCarnitineen_US
dc.subjectReactive Oxygen Speciesen_US
dc.subjectSalt Stressen_US
dc.titleCarnitine modulates antioxidative defense in ABI2 mutant under salt stressen_US
dc.typeArticleen_US

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