Département de Biotechnologie végétale, Faculté des Sciences Laboratoire de Paléontologie Stratigraphique et Paléoenvironement (LPSP).Université des Sciences et de la Technologie Mohamed BOUDIAF d'Oran, Algeria
The effect of salt stress on antioxidative activity was studied in two species of halophytes Atriplex: halimus and canescens. The plants were exposed to 100, 300 and 600 mM l-1 NaCl for 30 days. The parameter of oxidative stress induced by salt, malondialdehyde (MDA) and the activity of peroxidase (POD) are determined. The results show that in terms of lipid peroxidation, the two species are very little or not affected by the salt for all concentrations applied. This reflects a better protection of cell membranes against oxidative damaging effects of salt. However, in terms of peroxidase activity, variability of responses is observed. This variability is a function of the salt concentration, the organ and species.
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