Influence of Abiotic Stress on Antioxidant Mechanism in Finger Millet (Eleusine coracana L.) Kansara R.V.1,*, Patel R.M.2 1Department of Plant Molecular Biology and Biotechnology, Navsari Agricultural University, Navsari, 396445, Gujarat, India 2ASPEE Shakilam Agriculture Biotechnology Institute, Navsari Agricultural University, Athwa Farm, Surat, Gujarat, India *email: rohan_mvrd@yahoo.co.in
Online published on 2 January, 2017. Abstract The main objective of the present experiment was tostudy the modifications in the antioxidant metabolism in finger millet plants (Eleusine coracana L.) that were exposed to different salt concentrations. Variety GN-4 seedlings weretreated with Hoagland's solution containing control, 50, 100, 200 and 300 mM NaCl and incubated for 14 days inoculation room. There was areduced activity of antioxidant enzymes viz., superoxide dismutase (SOD), and guaiacol peroxidase (GPOX) on increasing salt concentrations in the Hoagland's solution. While, the levels of and catalase (CAT), Ascorbate peroxidise (APX) and Glutathione reductase (GR) activity increased with different concentration of NaCl. These results suggested antioxidant enzymes such as SOD and GPOX shown low levels of activity, a large proportion of the hydrogen peroxide that produced is preferentially directed towards lipid peroxidation. Higher catalase and lower guaiacol peroxidase activities may be regarded as potentially useful biochemical indicators for selection of salt tolerant finger millet and targets for improvement through transgenic approaches for abiotic stresses. Top Keywords Eleusine coracana, Antioxidant enzymes, Abiotic stress. Top |