Kinetics of the antioxidant response to salinity in the halophyte Limonium bicolor
2008
Li, Y.,Dezhou Univ. (China). Biology Dept.
The fresh weight (fw) and dry weight (dw) of shoots and roots, the activity of antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and levels of malondialdehyde (MDA) were investigated in Limonium bicolor. The seedlings of L. bicolor were treated with different (0, 100, 200, 400 mmol/L) NaCl concentrations. The seedlings grew best under 100 mmol/L salt concentration. MDA concentration of shoots slightly decreased under 100 mmol/L salt stress, then increased with increased NaCl concentration. The activities of SOD, POD and CAT increased with the increase of NaCl concentration in shoots. The salt tolerance of this halophyte under salt stress conditions is probably due to its ability to exhibit high SOD, POD and CAT enzyme activities and low levels of oxidative stress.
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