Exogenous use of sodium nitroprusside and silicon to alleviate detrimental NaCl impact in Solanum lycopersicum (cv. Isabella) during vegetative stage
Year: 2021
Type: article
Abstract: One of the most deleterious abiotic stresses is the salinity stress, which causes inhibition of growth and development.Therefore, this investigation was conducted with aim of evaluating the effects of sodium nitroprusside (SNP) and silicic acid (Si) on biochemical response of Solanum lycopersicum (cv.Isabella) under different levels of salinity during vegetative stage.For this purpose, the seedlings were subjected to the different levels of salt stress (0 , 25, 50,100, and 150mM) and supplemented with optimized concentration of silicon (Si) (0, 2.5mM) and sodium nitroprusside (SNP) (0, 100µM) to assess variations in enzymatic and biochemical properties of tomato plant during vegetative growth.Salt stress inhibited the chlorophyll and carotenoid contents of tomato plants.The antioxidant enzyme activities such as catalase (CAT) and superoxide dismutase (SOD) as well as the levels of osmolytes (proline, glycine betaine), malondialdehyde (MDA), and hydrogen peroxide (H2O2) increased in tomato plants due to high salinity.Furthermore, the exogenous use of SNP and Si for salinizing the plants increased the antioxidant enzyme activities and osmolyte levels compared to NaCl-treated plants.In addition, in the plants under salt stress, which were supplemented with SNP and Si, the contents of MDA and H2O2 decreased compared to the plants treated with NaCl alone.Therefore, the exogenous use of Si and SNP led to protecting tomato plants against oxidative damage induced by salt stress by stimulating synthesis of antioxidant enzyme.Finally, under saline stress, plant growth improved.The findings indicated that with the improvement in antioxidative defense system, pigment syntheses, and osmolyte accumulation, SNP and Si had the ability to alleviate adverse impact of high salinity on tomato plant.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $500
OpenAlex ID: W4248935169