Biochemical response of Olea europaea cv. Gemlik to short-term salt stress

Authors : Mehmet Ali DEMİRAL, Deniz AKTAŞ UYGUN, Murat UYGUN, Erkan KASIRĞA

Pages : 433-442

View : 15 | Download : 5

Publication Date : 2011-12-01

Article Type : Research Paper

Abstract :One-year-old olive insert ignore into journalissuearticles values(Olea europaea L. cv. Gemlik); seedlings were exposed to increasing levels of salinity in pot culture. The experiment was laid out in a randomized block design with 6 replicates. Dry matter insert ignore into journalissuearticles values(DM); percentage, sodium insert ignore into journalissuearticles values(Na); and chloride insert ignore into journalissuearticles values(Cl); concentrations, 1,1-diphenyl-2-picryl hydrazyl insert ignore into journalissuearticles values(DPPH); scavenging activity, reducing power insert ignore into journalissuearticles values(RP);, total phenolic content insert ignore into journalissuearticles values(TPC);, and proline insert ignore into journalissuearticles values(PRO); content were determined in the leaves of the plants. The results showed that the olive plant used physiological and biochemical mechanisms consecutively to alleviate the effects of salt stress. The type of mechanism used was related to the severity of the salt stress. Salinity-induced variation in DPPH scavenging activity correlated well with the PRO and TPC variations of the leaves. The results showed that DPPH radical scavenging activity may be evaluated as a reliable parameter to assess the ability of antioxidants to hinder salt stress in olive plants.
Keywords : Key words Chloride, dry matter, DPPH scavenging activity, reducing power, sodium, total phenolics