Salt stress-induced alterations in proline accumulation, relative water content and superoxide dismutase (SOD) activity in salt sensitive Lycopersicon esculentum and salt-tolerant L. pennellii

Porgali, Z. B. and Yurekli, F. (2005) Salt stress-induced alterations in proline accumulation, relative water content and superoxide dismutase (SOD) activity in salt sensitive Lycopersicon esculentum and salt-tolerant L. pennellii. Acta Botanica Hungarica, 47 (1-2). pp. 173-182. ISSN 0236-6495

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Abstract

Plants exposed to stress undergo changes in their metabolism in order to adapt with the changes in their environment. Salt stress has been attributed to some physiological and biochemical alterations in plants. Proline accumulation relative water content (RWC) and super oxide dismutase (SOD) enzyme activity were analysed in a salt-sensitive (Lycopersicon esculentum) and salt-tolerant Lycopersicon pennellii), under different NaCl concentrations. The findings in our study showed that RWC and SOD activity decreased and proline level increased in salt-sensitive L. esculentum compared to L. pennellii. Proline level seems to be a criterion in the evaluation of plants salt tolerance. Increased SOD activity can be involved in defence the antioxidative stress.

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