Exogenously applied hexaconazole ameliorates salinity stress by inducing an antioxidant defense system in Brassica napus L. plants |
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| Authors: | Gholam Ali Akbari Mostafa Hojati Seyed Ali Mohammad Modarres-Sanavy Faezeh Ghanati |
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| Institution: | aDepartment of Agronomy and Plant Breeding, Abooreihan Campus, University of Tehran, Tehran, Iran;bDepartment of Agronomy, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran;cDepartment of Plant Biology, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran |
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| Abstract: | The ability of hexaconazole (HEX) to ameliorate salinity stress was studied in canola plants (Brassica napus L.). Canola seedlings were subjected to sodium chloride (NaCl) treatment. A treatment with 200 mM NaCl reduced growth parameters, chlorophyll content and protein content as well as increased the proline (Pro) content in canola plants. In addition, NaCl stress increased the endogenous, nonenzymatic antioxidants and the activity of antioxidant enzymes, such as peroxidase (POX; EC 1.11.1.7), superoxide dismutase (SOD; EC 1.15.1.1) and catalase (CAT; EC 1.11.1.6). When these plants were treated with a combination of NaCl and 50 mg L−1 HEX, the inhibitory effects of NaCl stress were decreased by increasing the root growth, shoot growth, dry weight (DW), chlorophyll content, protein content and antioxidant enzyme activity by ameliorating the salinity injury. These results suggested that HEX has an important role in the enhancement of plant antioxidant systems and resistance to salinity in canola plants. |
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| Keywords: | Antioxidants Canola Hexaconazole Lipid peroxidation Salinity |
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