Antioxidative and physiological responses of two sunflower (Helianthus annuus) cultivars under PEG-mediated drought stress

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dc.contributor.authorBaloglu, Mehmet Cengiz
dc.contributor.authorKavas, Musa
dc.contributor.authorAydin, Gulsum
dc.contributor.authorOktem, Huseyin Avni
dc.contributor.authorYucel, Ayse Meral
dc.date.accessioned2020-03-26T18:23:55Z
dc.date.available2020-03-26T18:23:55Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractDrought stress is one of the most important yield-reducing factors in crop production. Sunflower, an oilseed crop, is severely affected by abiotic stress. In this study, 2 sunflower cultivars (Musala and Aydin) were evaluated in terms of various biochemical and physiological responses under 2 different polyethylene glycol-mediated drought stress conditions. Stress-determining parameters such as malondialdehyde (MDA), hydrogen peroxide (H2O2), and proline contents were determined. Both cultivars showed similar responses at osmotic potentials of both -0.4 and -0.8 MPa. Aydin was less affected than Musala under these stress conditions. MDA, H2O2, and proline levels were similar at both -0.4 and -0.8 MPa osmotic potentials in the 2 different cultivars. The 2 cultivars differed significantly in ascorbate peroxidase and catalase enzyme activities, which were more prominent in Aydin for both stress levels. However, glutathione reductase activity did not appear to be an essential part of the antioxidative system in either of the cultivars. Engineering antioxidative enzyme levels might provide a potential mechanism to cope with drought stress in sunflower.en_US
dc.identifier.doi10.3906/bot-1111-20en_US
dc.identifier.endpage714en_US
dc.identifier.issn1300-008Xen_US
dc.identifier.issn1303-6106en_US
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage707en_US
dc.identifier.urihttps://dx.doi.org/10.3906/bot-1111-20
dc.identifier.urihttps://hdl.handle.net/20.500.12395/27755
dc.identifier.volume36en_US
dc.identifier.wosWOS:000312480500011en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.publisherTUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEYen_US
dc.relation.ispartofTURKISH JOURNAL OF BOTANYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectHelianthus annuusen_US
dc.subjectdrought stressen_US
dc.subjectantioxidant enzymesen_US
dc.subjectprolineen_US
dc.titleAntioxidative and physiological responses of two sunflower (Helianthus annuus) cultivars under PEG-mediated drought stressen_US
dc.typeArticleen_US

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