Assessment of salt and drought stress on the biochemical and molecular functioning of onion cultivars

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dc.authoridGOKCE, ALI FUAT/0000-0002-2953-0326
dc.authoridOZTURK, ZAHIDE NESLIHAN/0000-0002-2592-9997
dc.authoridChaudhry, Usman Khalid/0000-0002-5077-5141
dc.contributor.authorChaudhry, Usman Khalid
dc.contributor.authorOzturk, Zahide Neslihan
dc.contributor.authorGokce, Ali Fuat
dc.date.accessioned2024-11-07T13:25:14Z
dc.date.available2024-11-07T13:25:14Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractBackgroundSalt and drought stress are the main environmental constraints that limit onion growth and productivity. Turkiye is the fifth largest onion producer, whereas the stress conditions are increasing in the region, resulting in poor crop growth.Methods and ResultsA current study was conducted under greenhouse conditions according to a completely randomized design with factorial arrangements to evaluate the performance of onion cultivars. Plants were subjected to salt stress with an application of 750 mM NaCl and drought stress was applied by depriving plants of irrigation water for 20 days to measure biochemical and transcript changes. The antioxidant activities of the cultivars were quantified by using four different methods, i.e., 2,2 '-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) assays, cupric reducing antioxidant capacity, 2,2-Diphenyl-1-picrylhydrazyl, and ferric reducing antioxidant power (FRAP). The damage to pigments, phenolic, osmolytes, and hydrogen peroxide (H2O2) accumulation was also evaluated. Results revealed that the cultivars Elit and Hazar had higher H2O2, maximum damage to pigments, and least accumulation of phenolics and osmolytes under both stress conditions. The cultivar Sampiyon performance was better under salt stress but exhibited a poor antioxidant defensive mechanism under drought stress conditions. The remaining cultivars suggested a resilient nature with a higher accumulation of osmolytes, antioxidants and phenolics. The change in transcript levels further strengthened the response of resilient cultivars; for instance, they showed higher transcript levels of superoxide dismutase, ascorbate oxidase and transcription factors (WRKY70, NAC29). It helped alleviate the oxidative stress in tolerant cultivars and maintained the physio-biochemical functioning of the cultivars..ConclusionThe results of the current study will fill the gap of missing literature in onion at biochemical and molecular levels. Additionally, resilient cultivars can effectively cope with abiotic stresses to ensure future food security.
dc.description.sponsorshipNigde Omer Halisdemir University, Nigde, Turkiye [TGT 2019/05-BAGEP]
dc.description.sponsorshipScientific Research Projects Unit (BAP) of Nigde Omer Halisdemir University, Nigde, Turkiye provided funds for this study under Project No. TGT 2019/05-BAGEP.
dc.identifier.doi10.1007/s11033-023-08923-2
dc.identifier.issn0301-4851
dc.identifier.issn1573-4978
dc.identifier.issue1
dc.identifier.pmid38157089
dc.identifier.scopus2-s2.0-85180919839
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s11033-023-08923-2
dc.identifier.urihttps://hdl.handle.net/11480/14576
dc.identifier.volume51
dc.identifier.wosWOS:001132269100010
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofMolecular Biology Reports
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectAntioxidants
dc.subjectOsmolytes
dc.subjectPigments
dc.subjectPhenolics
dc.subjectTranscriptomics
dc.titleAssessment of salt and drought stress on the biochemical and molecular functioning of onion cultivars
dc.typeArticle

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