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- MakaleYayıncıda açık erişim2020Scopus SJRQ2Comparative analysis of defence response of soybean by seed soaking in gibberellic acid to salinity
Dinler, Burcu Seckin; Gul, Volkan
The present study was conducted to determine the effects of gibberellic acid (GA3) presoaking of soybean (Glycine max L.) seeds on the biomass yield, regulation of reactive oxygen species and some antioxidant enzyme activities in radicle, hypocotyl and cotyledons under salinity. Within this scope, the seeds were subjected to priming with 150 ppm GA3 for 6 h at room temperature. Then, 150 mM NaCl was added in a group and the control was not primed with GA3. The results clearly revealed that salt stress caused a slight induction of biomass yield of radicle and hypocotyl, photosynthetic pigments in cotyledon, reactive oxygen species content in all organs. Moreover, GA3 pretreatment alleviated salt-induced oxidative damage by maintaining superoxide dismutase, ascorbate peroxidase and glutathione reductase enzyme activities in soybean plants. This study firstly elucidates the effects of GA3 priming on the comparative response mechanisms to salinity with different organs of soybean plants.
AtıfScopus3WoS2
İncele - MakaleYalnız künye2018Scopus SJRQ3THE COOPERATION BETWEEN METHYL JASMONATE AND SALICYLIC ACID TO PROTECT SOYBEAN (GLYCINE MAX L.) FROM SALINITY
Seckin-Dinler, Burcu; Tasci, Eda; Sarisoy, Ufkun; Gul, Volkan
Methyl jasmonate (MeJA), a methyl ester of jasmonic acid, is a naturally produced phytohormone that regulates plant growth and development by maintaining the morphologic, physiological, and biochemical development of plants. The purpose of this study was to determine the effect of methyl jasmonate and endogenous salicylic acid on the stimulation and scavenging of reactive oxygen species (ROS) under salt stress in soybean roots and leaves. Soybean leaves were sprayed with 0.5 mu M methyl jasmonate for 4 days, followed by exposure to 200 mM NaCl. Foliar application of MeJA did not change the leaf area; however, it increased the relative water content (RWC), chlorophyll content, relative electrolyte leakage (REL), and root and shoot fresh weight, and it lessened the stress-induced oxidative damage by decreasing the levels of hydrogen peroxide (H2O2), malondialdehyde (MDA). Curiously, catalase (CAT) enzyme and isoenzyme activity, and also endogenous salicylic acid (SA) were decreased by MeJA treatment. As a result, this study firstly determined that MeJA treatment improved the soybean performance under salinity by acting role as an antioxidant and cooperating with SA.
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