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- Title
Selenium and Nano-Selenium Diminish Salt Stress-Mediated Oxidative Damage in Narcissus tazetta by Up-Regulating Enzymatic and Non-Enzymatic Antioxidants.
- Authors
Sardari, M.; Rezayian, M.; Niknam, V.; Zarei, A.; Nejad, S. M. Seyyed
- Abstract
The underlying mechanism of selenium (Se) and nano-Se facilitating salinity tolerance in Narcissustazetta is not understood and information on how growth and physiochemical attributes is regulated by Se and nano-Se salinity stress is scarce. In this work, we investigated how the Se and nano-Se ameliorate the damaging impacts of salinity on N. tazetta plant. Plants were treated with Se (25 mg/L) and nano-Se (2 mg/L) and three concentrations of NaCl (0, 100 and 200 mM). Salinity stress reduced growth parameters compared with normal growth condition. Obtained results revealed that applied anti-stressors (Se and nano-Se) improved growth of N. tazetta under salinity conditions. The application of nano-Se more improved N. tazetta growth compared to Se. Nevertheless, the interaction between Se and nano-Se was not effective on the growth improvement of N. tazetta. Salinity boosted hydrogen peroxide (H2O2) and malondialdehyde (MDA) that resulted in oxidative damage. Se, nano-Se and Se × nano-Se treatments declined endogenous level of MDA under salinity. Se, nano-Se and Se × nano-Se treatments decreased the salinity-mediated oxidative damage by inducing activity of enzymatic components (superoxide dismutase, catalase, peroxidase and polyphenol oxidase) of the antioxidant system and the accumulation of total phenol, flavonoid and anthocyanin. Furthermore, Se and Se × nano-Se proved beneficial in increasing proline and soluble sugar in salt-stressed plants. Conclusively, Se and nano-Se acted as ameliorator and can be of beneficial in preventing salinity-mediated damage, and further studies are required to understanding of to how Se and nano-Se regulate physiochemical processes.
- Subjects
EFFECT of salt on plants; SELENIUM; POLYPHENOL oxidase; SUPEROXIDE dismutase; SUGAR crops; FLAVONOIDS; HYDROGEN peroxide
- Publication
Russian Journal of Plant Physiology, 2023, Vol 70, Issue 9, p1
- ISSN
1021-4437
- Publication type
Article
- DOI
10.1134/S1021443723602124