Melatonin application enhances salt stress-induced decreases in minerals, betalains, and phenolic acids in beet (Beta vulgaris L.) cultivars

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dc.authoridMedic, Aljaz/0000-0002-1533-2628
dc.authoridEsatbeyoglu, Tuba/0000-0003-2413-6925
dc.authoridCOLAK, NESRIN/0000-0002-9396-7514
dc.authoridSlatnar, Ana/0000-0002-3231-9927;
dc.contributor.authorColak, Nesrin
dc.contributor.authorSlatnar, Ana
dc.contributor.authorMedic, Aljaz
dc.contributor.authorTorun, Hulya
dc.contributor.authorKurt-Celebi, Aynur
dc.contributor.authorDraeger, Gerald
dc.contributor.authorDjahandideh, Jasmin
dc.date.accessioned2025-10-11T20:48:12Z
dc.date.available2025-10-11T20:48:12Z
dc.date.issued2024
dc.departmentDüzce Üniversitesien_US
dc.description.abstractMelatonin is a potentially active signaling molecule and plays a crucial role in regulating the growth and development of plants under stress conditions, alleviating oxidative damage, enhancing antioxidant defence mechanisms and regulating ion homeostasis. This study examined the effects of exogenous melatonin application on leaf biomass, ion concentrations, betalains, phenolic acid and endogenous melatonin contents comparing red beet (Beta vulgaris L. 'Ruby Queen' and 'Scarlet Supreme') and white beet ('Rodeo' and 'Ansa') cultivars under increasing salinity levels of 50, 150, and 250 mM NaCl. Exogenous melatonin increased salinity-induced reductions in fresh and dry weights and osmotic potential in leaves. Na+ concentrations rose significantly with increasing salinity, but cultivar-specific decreases were observed in K+ and Ca2+ concentrations. Additionally, melatonin application improved betalain, betanin and neobetanin contents induced by salt stress. Furthermore, melatonin application caused salt stress and cultivar-specific changes in phenolic acid contents e.g., ferulic acid, sinapic acid, or m-coumaric acid, in soluble free, ester- and glycoside-conjugated and cell wall-bound forms. In addition, antioxidant enzyme activities and compound contents increased significantly in the beets and were subsequently lowered in a cultivar-specific manner by salt stress + melatonin treatment. The current findings indicate that exogenous melatonin improved plant stress tolerance suppressing reactive oxygen species levels, increasing the antioxidant enzyme activities and compound contents and reducing the levels of Na+, maintaining an ionic homeostasis in the selected red and white sugar beet cultivars. It appears that melatonin application may help improve cultivar-specific salt tolerance by enhancing ion homeostasis and betalain and phenolic acid production levels in beets.en_US
dc.description.sponsorshipTrkiye Bilimsel ve Teknolojik Arascedil;timath;rma Kurumu [ARDEB 1001, 119Z085, P4-0013-0481]en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)en_US
dc.description.sponsorshipSlovenian Research Agency (ARRS)en_US
dc.description.sponsorshipThis study was funded by the Scientific and Technological Research Council of Turkey (TUBITAK) ARDEB 1001 Grant No 119Z085. This work is partly a part of the program Horticulture No. P4-0013-0481, funded by the Slovenian Research Agency (ARRS).en_US
dc.identifier.doi10.1111/ppl.14611
dc.identifier.issn0031-9317
dc.identifier.issn1399-3054
dc.identifier.issue6en_US
dc.identifier.pmid39528361en_US
dc.identifier.scopus2-s2.0-85208815539en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1111/ppl.14611
dc.identifier.urihttps://hdl.handle.net/20.500.12684/21806
dc.identifier.volume176en_US
dc.identifier.wosWOS:001368725900001en_US
dc.identifier.wosqualityQ1en_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/closedAccessen_US
dc.snmzKA_WOS_20250911
dc.titleMelatonin application enhances salt stress-induced decreases in minerals, betalains, and phenolic acids in beet (Beta vulgaris L.) cultivarsen_US
dc.typeArticleen_US

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