biologia plantarum

Biologia plantarum 50:745-748, 2006 | DOI: 10.1007/s10535-006-0121-2

Effect of salt stress on lipid peroxidation and superoxide dismutase and peroxidase activities of Lycopersicon esculentum and L. pennellii

H. Koca¹, F. Ozdemir¹, I. Turkan^1,*

¹ Department of Biology, Science Faculty, Ege University, Bornova, Izmir, Turkey

In this study, a relationship between lipid peroxidation, the antioxidant defense system and salt stress in salt-sensitive cultivated tomato (Lycopersicon esculentum) and its salt-tolerant wild relative (L. pennellii) was established. Superoxide dismutase (SOD) activities were significantly higher in the leaves of L. pennellii than those of L. esculentum after 12 and 84 d. POX activity showed a gradual increase in both cultivars under 70 mM NaCl. POX activity in L. pennellii significantly increased after 6 and 84 d whereas showed no remarkable change in leaves of L. esculentum under 140 mM NaCl. A higher salinity tolerance of L. pennellii was also correlated with a lower lipid peroxidation, which might be due to a higher content of antioxidant enzymes studied.

Keywords: antioxidant enzymes; ascorbate peroxidase; glutathione reductase; malondialdehyde; NaCl; tomato

Subjects: antioxidants, antioxidative enzymes; ascorbate peroxidase; glutathione reductase; lipid peroxidase, lipid peroxidation; Lycopersicon esculentum; Lycopersicon pennellii; malonyldialdehyde; peroxidase; reactive oxygen species (ROS); superoxide dismutase (SOD); tomato

Received: November 16, 2004; Accepted: May 24, 2005; Published: December 1, 2006  Show citation