Volume 8, Issue 33 (vol. 8, no. 33, 2020 2019)
2019, 8(33): 263-276 |
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chavoushi M, Najafi F, salimi A, Angaji S A. Effects of salicylic acid on antioxidant enzymes activities of safflower under drought stress. Plant Process and Function 2019; 8 (33) :263-276
URL: http://jispp.iut.ac.ir/article-1-1121-en.html
URL: http://jispp.iut.ac.ir/article-1-1121-en.html
1- Department of Plant Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran , chavoosh_m@yahoo.com
2- Department of Plant Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
3- Department of Cell and Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
2- Department of Plant Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
3- Department of Cell and Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
Abstract: (2389 Views)
Drought is one of the abiotic stresses that limits plant growth and crop production. Salicylic acid is one of growth regulators which plays an important role in biotic and abiotic stresses. In this study, the effect of salicylic acid on reduction of drought stress in safflower (Carthamus tinctorius L.) was studied. Also, the effect of the concentrations of SA (0, 0.25 mM) and water stress (levels 100%, 75%, 50% and 25% FC) on antioxidant enzymes activities and expression of the SOD gene were studied. When plants had three expanded leaves, they were sprayed with SA and after 2 days, and then they were exposed to drought. After seven days, plants again were sprayed by SA. After two weeks plants were harvested for studying of physiological and molecular parameters. The results showed that drought stress 25%FC increased leaves and roots antioxidant enzyme activity, H2O2 and malondialdehyde contents, leaf Mn-SOD and leaf and root Fe-SOD. Interaction of SA and drought increased root antioxidant enzyme activity and reduced leaf antioxidant enzyme activity, root and leaf gene expression of Fe-SOD and Mn-SOD, leaf and root H2O2 and malondialdehyde contents. As a result, salicylic acid had a significant role in the reduction of damage of drought stress in safflower plants.
Type of Study: Research |
Subject:
Droughts Stress
Received: 2018/09/16 | Accepted: 2019/01/22 | Published: 2020/05/11
Received: 2018/09/16 | Accepted: 2019/01/22 | Published: 2020/05/11
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