Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9489578 | Scientia Horticulturae | 2019 | 7 Pages |
Abstract
In this study, the effects of H2O2 pretreatment on growth and antioxidant system were investigated in pistachio rootstock Badami Rize Zarand during short term salt stress. The plants were subjected to NaCl stress (120 or 240âmM) for 7 days after pretreatment with 0, 1, 5 or 10âmM H2O2. Salinity stress significantly decreased seedling growth and ascorbic acid (ASA) and carotenoid (CAR) contents, whilst exogenous H2O2 application improved the growth and helped to reduce the percent reduction of total ASA and CAR contents under salt stress conditions. Ascorbate peroxidase (APX) and catalase (CAT) activities were strongly induced by salt stress after 48âh and reached the highest level at 168âh after spraying. H2O2-treated plants showed enzymatic activity higher than untreated plants, during the entire experimental period. Salinity treatments caused increase in plants GSH content with or without H2O2 pretreatment. GSH levels in the plants were previously treated with H2O2 were elevated even higher. Overall, better performance of pistachio seedlings under salt stress due to H2O2 pre-treatment might be due to improved better osmotic adjustment through coordination with CAT, and APX and enhanced non-enzymatic antioxidant accumulation under salt stress leading to a higher ability to withstand salt-induced effects.
Keywords
Related Topics
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Agricultural and Biological Sciences
Horticulture
Authors
Mahsa Bagheri, Mahdiyeh Gholami, Bahram Baninasab,