Combined efficiency of salicylic acid and calcium on the antioxidative defense system in two different carbon-fixative turfgrasses under combined drought and salinity

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dc.contributor.authorTorun, Hülya
dc.date.accessioned2021-12-01T18:47:00Z
dc.date.available2021-12-01T18:47:00Z
dc.date.issued2022
dc.departmentDÜ, Ziraat Fakültesien_US
dc.description.abstractCombined stress effects are unique when compared to individual stress applications. As the subject has not been previously examined, the aim of this study was to investigate the role of salicylic acid (SA) and calcium (Ca) as signaling molecules under combined drought and salt stresses on two different carbonfixative turfgrasses, Lolium perenne L. (perennial ryegrass; C3) and Cynodon dactylon (L.) Pers. (Bermuda grass; C4). Twenty-one days after germination, PEG6000 (5%) and NaCl (150 mM) were applied simultaneously as a combined drought and salinity (DS) treatment. Before starting the treatment, half of the seedlings were treated with SA (0.5 mM) solution for 24 h; Ca (5 mM) was also applied simultaneously to the SA-treated groups. Combined drought and salt stresses caused substantial decreases in leaf growth parameters, relative water content, and osmotic potential in both cultivars, whereas lipid peroxidation (TBARS), hydrogen peroxide (H2O2), and electrolyte leakage increased. However, the deleterious effect of the combined stress was much more pronounced in Bermuda grass. On the other hand, activities of superoxide dismutase (SOD), peroxidase (PDX), ascorbate peroxidase (APX), and glutathione reductase (GR) in perennial ryegrass and only GR in Bermuda grass were reduced by DS. Moreover, Na accumulation was greater in perennial ryegrass (33.9-fold) than in Bermuda grass (11.1-fold). Under stress, simultaneous SA+Ca application was more effective on the recovery potential of Bermuda grass than on that of perennial ryegrass, with enhanced growth as well as increased proline, K, Mg, and Ca contents, and retained RWC. However, the SA+Ca treatment for the perennial ryegrass under DS significantly enhanced the antioxidant defense activities of SOD, PDX, APX, and GR as well as increasing the TBARS and H2O2 content, compared with plants subjected to DS alone. Taken together, these results indicated that simultaneous application of SA+Ca could play a positive regulatory role, which in turn could improve the double-stress tolerance of turfgrasses. (C) 2021 SAAB. Published by Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipDuEurozce University Research Foundation [2017.11.01.557]en_US
dc.description.sponsorshipI would like to thank Nuriye Peaci for her corrections and suggestions for the English grammar in this manuscript. This work was supported by funding from the DuEurozce University Research Foundation (Grant number 2017.11.01.557).en_US
dc.identifier.doi10.1016/j.sajb.2021.08.016
dc.identifier.endpage82en_US
dc.identifier.issn0254-6299
dc.identifier.issn1727-9321
dc.identifier.scopus2-s2.0-85114996287en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage72en_US
dc.identifier.urihttps://doi.org/10.1016/j.sajb.2021.08.016
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10099
dc.identifier.volume144en_US
dc.identifier.wosWOS:000701777600007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTorun, Hulya
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSouth African Journal Of Botanyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectC3 and C4en_US
dc.subjectCalciumen_US
dc.subjectCombined stressen_US
dc.subjectDroughten_US
dc.subjectSalicylic aciden_US
dc.subjectSalinityen_US
dc.subjectPerennial Ryegrassen_US
dc.subjectHydrogen-Peroxideen_US
dc.subjectAbscisic-Aciden_US
dc.subjectC-4 Photosynthesisen_US
dc.subjectOxidative Stressen_US
dc.subjectSalt Toleranceen_US
dc.subjectWater-Deficiten_US
dc.subjectNitric-Oxideen_US
dc.subjectChloroplastsen_US
dc.subjectAcclimationen_US
dc.titleCombined efficiency of salicylic acid and calcium on the antioxidative defense system in two different carbon-fixative turfgrasses under combined drought and salinityen_US
dc.typeArticleen_US

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