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Sodium chloride (NaCl) and hydrogen peroxide (H2O2) induced changes in antioxidant enzymes (SOD, CAT, and POX) of contrasting wheat cultivars under favourable growth conditions

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Therefore, the study was undertaken to identify the marker antioxidant enzymes of drought sensitive and drought tolerant wheat cultivars those may be helpful in plant breeding for salt tolerance. | Int.J.Curr.Microbiol.App.Sci 2020 9 11 1510-1515 International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 9 Number 11 2020 Journal homepage http www.ijcmas.com Original Research Article https doi.org 10.20546 ijcmas.2020.911.179 Sodium Chloride NaCl and Hydrogen Peroxide H2O2 Induced Changes in Antioxidant Enzymes SOD CAT and POX of Contrasting Wheat Cultivars under Favourable Growth Conditions Santosh Kumari1 and Vipin Kumar Verma2 1 Division of Plant Physiology Indian Agricultural Research Institute New Delhi India 2 Department of Pharmacology All India Institute of Medical Sciences New Delhi India Corresponding author ABSTRACT Keywords Differential response of CAT1 CAT2 and CAT3 indicated the positive correlation of Catalase Hydrogen catalase and H2O2 accumulation in C306 under control H2O2 NaCl and NaCl H2O2 peroxide treatments accompanied with enhancement of SOD activity in flag leaves of the drought Peroxidase Sodium tolerant wheat cultivar. SOD activities provide extra protection in combination with chloride catalase in wheats under oxidative stresses. The POX and SOD activity enhancement in Superoxide flag leaves was positively associated with plant height and leaf size reduction under salt dismutase Wheats stress in wheats. The differential accumulation of H 2O2 is cultivar specific and associated with SOD isoforms CuZnSOD that is involved in lignin biosynthesis. CuZnSOD or CAT Article Info were not inhibited under salt stress suggest that it is superoxide rather than other forms of Accepted ROS mediating proline oxidase induced apoptosis. Proline accumulation oxidation alter 12 October 2020 the intracellular redox status by proline oxidase inhibition by MnSOD and superoxide Available Online dismutation to H2O2 which is utilised by POX for lignin biosynthesis. 10 November 2020 Introduction incorporating suberin. Lignin is present in xylem vessels and xylem fibers in high Plants adjust their antioxidant enzymes to .

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