Document Type : Research Paper
Authors
1 M.Sc., Department of Biology, Faculty of Science, University of Isfahan, Isfahan
2 Professor, Department of Biology, Faculty of Science, University of Isfahan, Isfahan
Abstract
Tocopherols, identified as vitamin E, are amphipathic molecules known as antioxidant & able to remove ROS in lipophilic conditions. In this study, tobacco plants were cultured on MS medium containing concentrations of 0, 100, 200 mM NaCl supplemented with 0, 100, 200 & 400 mg.L ˉ1 α-tocopherol for 4 weeks. Then growth parameters including fresh & dry weight, photosynthetic pigments including chlorophyll a, b, total chlorophyll & carotenoids, sodium & potassium, proline, total phenol, soluble sugar, anthocyanins, & total protein were measured. The results showed that, increasing of α-tocopherolconcentrations increased fresh & dry weight of plants & the amount of photosynthetic pigments, proline, soluble sugar, total phenol, anthocyanins & potassium while, amount of sodium was decreased significantly.Protein content increased by the highest concentration of α-tocopherol. It seemed that, treatment with vitamin E by changing physiological parameters increased salt tolerance of tobacco plant.
Keywords
Main Subjects
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