H2O2 and NO mitigate salt stress by regulating antioxidant enzymes in in two eggplant (Solanum melongena L.) genotypes

Authors : Fahriye ÖCAL ÖZDAMAR, Gökçen BAYSAL FURTANA, Rukiye TIPIRDAMAZ, Hayri DUMAN

Pages : 1-6

Doi:10.21657/topraksu.977238

View : 14 | Download : 8

Publication Date : 2022-07-27

Article Type : Research Paper

Abstract :H2O2 and NO are the key molecules of plant signalling and perception. In this study, we aimed at the antioxidant capacity of foliar-applied eggplant genotypes which shows different responses to salinity insert ignore into journalissuearticles values(Artvin: salt-sensitive; Mardin: salt-tolerant);. For this purpose, H2O2 and NO donor insert ignore into journalissuearticles values(SNP); were sprayed to the leaves of the seedlings for 2 days then exposed to 100 mM NaCl for 10 days. The amount of Malondialdehyde insert ignore into journalissuearticles values(MDA);, which increased with salt application and is the most important indicator of lipid peroxidation, decreased significantly with individual or combined pretreatments of H2O2 and NO donors. SOD and CAT enzyme activities are affected by foliar spraying of donors. While CAT enzyme activity increased significantly with salt application in both genotypes, it showed a significant increase again with individual or combined application of donors. SOD enzyme activity, on the other hand, showed a minor increase in both genotypes with the application of salt stress, while it was significantly increased with the application of donors individually or together.
Keywords : Hydrogen peroxide, nitric oxide, antioxidant, MDA, salt stress