Role of Zinc Oxide Nanoparticles in Ameliorating Salt Tolerance in Soybean | ||||
Egyptian Journal of Botany | ||||
Article 31, Volume 60, Issue 3, December 2020, Page 733-747 PDF (1.67 MB) | ||||
Document Type: Regular issue (Original Article) | ||||
DOI: 10.21608/ejbo.2020.26415.1475 | ||||
View on SCiNiTO | ||||
Authors | ||||
Reda Gaafar 1; Rana Diab2; Mohamed Halawa2; Adel Elshanshory2; Abdelhamid El-Shaer3; Marwa Hamouda2 | ||||
1Botany Department, Faculty of Science Tanta University, P.O. Box 31527, Tanta, Egypt | ||||
2Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt | ||||
3Physics Department, Faculty of Science, Kafreleheikh University, Kafrelsheikh 33516, Egypt | ||||
Abstract | ||||
AS LONG as we know, little attention has been given to evaluating roles of ZnO nanoparticles (ZnONPs) in plants grown under salinity stress. In the present study, biochemical and molecular responses of salt-stressed soybean cv. Giza111 under different ZnONPs were assessed. Treatment with a high NaCl concentration (250mM) alone caused a significant reduction (65%) in germination percentage as well as a significant decrease in all measured growth parameters (root length, shoot height, fresh and dry weight of roots and shoots) and photosynthetic performance (Fv/Fm) compared to control plants. In contrast, malondialdehyde (MDA) & proline contents, and activities of antioxidant enzymes (catalase CAT, peroxidase POX and superoxide dismutase SOD) were highly increased. In contrast, presoaking of soybean seeds with different concentrations of ZnONPs (25, 50, 100, 200mg/L) stimulated the growth of stressed plants which was exhibited by improved growth parameters and photosynthetic performance as well as lower levels of proline and MDA in stressed plants particularly at ZnONPs concentration of 50 mg/L compared to controls. Moreover, isozyme analysis of CAT, POX and SOD showed variable pattern of alleles at 50mg/L ZnONPs. Accordingly, these results recommend application of 50mg/L ZnONPs for improving the productivity of soybean cultivated in saline soils. | ||||
Keywords | ||||
Antioxidant enzymes; Fv/Fm; Glycine max L; Isozymes; Nanoparticles; Salinity | ||||
Statistics Article View: 1,035 PDF Download: 1,069 |
||||