Different UV radiation-induced changes in antioxidant defense system in okra

Kargar-Khorrami, S. and Jamei, R. and Hosseini-Sarghen, S. and Asadi-Samani, M. (2014) Different UV radiation-induced changes in antioxidant defense system in okra. Advances in Environmental Biology, 8 (7). pp. 2424-2431.

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Abstract

In this paper okra plants were treated by different UV radiation, UV-A, UV-B and UV-C, for 12 days and effects of different UV radiation on activities of antioxidant enzymes including superoxide dismutase (EC. 1.15.1.1, SOD), ascorbate peroxidase (EC 1.11.1.11, APX), guaiacol peroxidase (EC 1.11.1.7, GPX), catalase (EC 1.11.1.6, CAT), and glutathione reductase (EC 1.6.4.2, GR) in leaves, stems, and roots as well as antioxidant compounds including ascorbic acid (AA), anthocyanin, and flavonoid were examined under controlled conditions. The results show an increase in enzymatic and non-enzymatic antioxidants when plants are exposed to UV-B or UV-C radiation while antioxidant enzymes activities and antioxidant compounds did not significantly increase under the UV-A radiation treatments compared to control plants. Our results suggest that increased level of lipid peroxidation products and antioxidant system activity in the UV-B and UV-C treatments may be considered as biomarkers of intensity of UV radiation stress. However, more research is necessary to elucidate the precise role that the antioxidant system plays under UV radiation stress. © 2014 AENSI Publisher All rights reserved.

Item Type: Article
Additional Information: cited By 3
Uncontrolled Keywords: Antioxidant compounds- Antioxidant enzymes- Okra- Oxidative stress- Ultraviolet radiation
Subjects: WB Practice of Medicine
QU Biochemistry
QV pharmacology
Divisions: Reserach Vice-Chancellar Department > Medical Plants Research Center
Depositing User: zahra bagheri .
Date Deposited: 02 Aug 2017 07:21
Last Modified: 02 Aug 2017 07:21
URI: http://eprints.skums.ac.ir/id/eprint/2253

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