Modulation of osmotic adjustment and antioxidant status in salt-stressed leaves of Thermopsis turcica

Basit Öğe Kaydı
dc.contributor.authorYildiztugay, Evren
dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorKucukoduk, Mustafa
dc.date.accessioned2024-02-23T13:59:41Z
dc.date.available2024-02-23T13:59:41Z
dc.date.issued2014
dc.departmentNEÜen_US
dc.description.abstractThermopsis turcica is distributed naturally in saline soils. Interestingly, how T. turcica can live in harsh salt conditions is unknown. To study its defense responses under salinity, T. turcica was grown in a medium containing 100 and 200 mM NaCl for 7 and 14 days. Physiological parameters, ion contents, reactive oxygen species accumulation, activities of antioxidant enzymes/isozymes, NADPH oxidase enzyme/isozyme, lipid peroxidation (TBARS) and osmolyte contents were investigated. Stress caused a rapid decline in relative growth rate, relative water content and chlorophyll fluorescence (F (v)/F (m)) under both NaCl treatments. These traits were more suppressed at 200 mM NaCl. The decline in osmotic potential (I (I) ) with salinity increased the gradient for water flux into the cell and assisted in turgor maintenance. The increased membrane permeability under stress caused the entrance of excess Na+ and K+ into the cell. Stress decreased superoxide dismutase, catalase and peroxidase after 14 days of growth in 200 mM NaCl, whereas glutathione reductase (GR) increased throughout the experiment. While ascorbate peroxidase (APX) increased by 44 % at 7 days, it decreased after 14 days exposure to 200 mM NaCl. 200 mM NaCl caused the highest increase in TBARS at 14 days, indicating a decrease in OH center dot scavenging activity. Increasing concentrations of salinity caused an increase in glycine betaine (GB) and choline (Cho), though an increase in proline was only observed at 200 mM NaCl for 14 days. Briefly, H2O2 was more efficiently eliminated in 100 mM-treated plants by the ascorbate-glutathione cycle in which APX acts a strong catalyst together with GR. Also, Cho and GB help to maintain osmotic adjustment and cytoplasmic function.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects Coordinating Office [11401023]en_US
dc.description.sponsorshipFinancial support for this work was provided by the Selcuk University Scientific Research Projects Coordinating Office (Project Number: 11401023). We also would like to thank Assistant Prof. Dr. Mehmet Hamurcu for his technical assistance in ICP-OES analyses.en_US
dc.identifier.doi10.1007/s11738-013-1393-8
dc.identifier.endpage138en_US
dc.identifier.issn0137-5881
dc.identifier.issn1861-1664
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-84892458037en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage125en_US
dc.identifier.urihttps://doi.org/10.1007/s11738-013-1393-8
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11274
dc.identifier.volume36en_US
dc.identifier.wosWOS:000329754800012en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer Heidelbergen_US
dc.relation.ispartofActa Physiologiae Plantarumen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAntioxidant Enzymesen_US
dc.subjectReactive Oxygen Species (Ros)en_US
dc.subjectSalt Stressen_US
dc.subjectThermopsis Turcicaen_US
dc.subjectWater Statusen_US
dc.titleModulation of osmotic adjustment and antioxidant status in salt-stressed leaves of Thermopsis turcicaen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu