Upregulation of antioxidant enzymes by exogenous gallic acid contributes to the amelioration in Oryza sativa roots exposed to salt and osmotic stress

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dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorYildiztugay, Evren
dc.contributor.authorKucukoduk, Mustafa
dc.date.accessioned2020-03-26T19:07:51Z
dc.date.available2020-03-26T19:07:51Z
dc.date.issued2015
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe aim of this study is to elucidate the influence of the exogenous application of gallic acid (GLA) in alleviating the detrimental effects of salinity (NaCl), osmotic stress (polyethylene glycol; PEG), and their combination in Oryza sativa L. roots. To produce same osmotic potential (-0.5 MPa), 3-week-old rice seedlings were treated with 120 mM NaCl and/or 20 % PEG6000 with/without GLA (0.75 and 1.5 mM) treatments for 72 h. Both alone and combination of stresses decreased growth (RGR) and osmotic potential (I (I) ). Moreover, stress caused a significant increase in proline (Pro) and hydrogen peroxide (H2O2) contents. Also, Pokkali and IR-28 had higher H2O2-scavenging enzyme activities including catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) activities in NaCl-treated roots. Only CAT activity was induced in both cultivars with PEG. Therefore, the enhanced levels of lipid peroxidation (thiobarbituric acid reactive substances (TBARS)) were more pronounced under PEG than NaCl. However, GLA significantly mitigated NaCl and/or PEG-induced stress injury. Under salinity, TBARS was lesser in GLA-applied rice that was associated with greater activities of superoxide dismutase (SOD), peroxidase (POX), and APX. GLA in the presence of PEG improved the activities of CAT and POX. According to these findings, GLA alleviated the damaging effects of NaCl and/or PEG (especially under NaCl) by improving the antioxidative system in rice. This is the first study elucidating the effects of GLA on tolerance to salinity, osmotic stress, and their combination in plants.en_US
dc.description.sponsorshipNecmettin Erbakan University Scientific Research Projects Coordinating OfficeKonya Egitim Training & Research Hospital [121215001]en_US
dc.description.sponsorshipFinancial support for this work was provided by Necmettin Erbakan University Scientific Research Projects Coordinating Office (project number: 121215001).en_US
dc.identifier.doi10.1007/s11356-014-3472-9en_US
dc.identifier.endpage1498en_US
dc.identifier.issn0944-1344en_US
dc.identifier.issn1614-7499en_US
dc.identifier.issue2en_US
dc.identifier.pmid25163564en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1487en_US
dc.identifier.urihttps://dx.doi.org/10.1007/s11356-014-3472-9
dc.identifier.urihttps://hdl.handle.net/20.500.12395/32725
dc.identifier.volume22en_US
dc.identifier.wosWOS:000348047400072en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherSPRINGER HEIDELBERGen_US
dc.relation.ispartofENVIRONMENTAL SCIENCE AND POLLUTION RESEARCHen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectAntioxidant defense systemen_US
dc.subjectGallic aciden_US
dc.subjectOryza sativaen_US
dc.subjectOsmotic stressen_US
dc.subjectPhenolic acidsen_US
dc.subjectReactive oxygen speciesen_US
dc.titleUpregulation of antioxidant enzymes by exogenous gallic acid contributes to the amelioration in Oryza sativa roots exposed to salt and osmotic stressen_US
dc.typeArticleen_US

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