Effect of salt stress on physiological and antioxidative responses in two species of Salicornia (S. persica and S. europaea

• Autorzy: Aghaleh M. , Niknam V. , Ebrahimzadeh H. , Razavi K.
• Języki publikacji: EN

Abstrakty

EN

The effects of salt stress on growth parameters, free proline content, ion accumulation, lipid peroxidation, and several antioxidative enzymes activities were investigated in S. persica and S. europaea. The seedlings were grown for 2 months in half-strength Hoagland solution and treated with different concentrations of NaCl (0, 85, 170, 340, and 510 mM) for 21 days. The fresh and dry weights of both species increased significantly at 85 and 170 mM NaCl and decreased at higher concentrations. Salinity increased proline content in both the species as compared to that of control. Sodium (Na⁺) content in roots and shoots increased, whereas K⁺ and Pi content in both organs decreased. At all NaCl concentrations, the total amounts of Na⁺ and K⁺ were higher in shoots than in roots. Malondialdehyde (MDA) content declined at moderate NaCl concentrations (85 and 170 mM) and increased at higher levels. With increased salinity, superoxide dismutase (SOD), catalase (CAT), and guaiacol peroxidase (GPX) activities also increased gradually in both species. In addition, it seems that GPX, CAT, and SOD activities play an essential protective role in the scavenging reactive oxygen species (ROS) in both species. Native polyacrylamide gel electrophoresis (PAGE) indicated different isoform profiles between S. persica and S. europaea concerning antioxidant enzymes. These results showed that S. persica exhibits a better protection mechanism against oxidative damage and it is more salt-tolerant than S. europaea possibly by maintaining and/or increasing growth parameters, ion accumulation, and antioxidant enzyme activities.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2011
• Tom: 33
• Numer: 4
• Opis fizyczny: p.1261-1270,fig.,ref.

Twórcy

autor

Aghaleh M.

• School of Biology, College of Science, University of Tehran, 14155-6455, Tehran, I.R. Iran

autor

Niknam V.

• School of Biology, College of Science, University of Tehran, 14155-6455, Tehran, I.R. Iran

autor

Ebrahimzadeh H.

• School of Biology, College of Science, University of Tehran, 14155-6455, Tehran, I.R. Iran

autor

Razavi K.

• Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), 14155-6343, Tehran, I.R. Iran

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