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Publication Type J
Authors Aghaleh, M., V. Niknam, H. Ebrahimzadeh and K. Razavi
Title Effect of salt stress on physiological and antioxidative responses in two species of Salicornia (S. persica and S. europaea)
Source Acta Physiologiae Plantarum
Author Keywords Antioxidant enzymes Halophyte Salt tolerance Ion accumulation Lipid peroxidation lipid-peroxidation glutathione-reductase superoxide-dismutase phaseolus-vulgaris calcium-chloride oxidative stress rice seedlings plant-growth water-stress nacl
Abstract 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 P-i 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.
Author Address [Aghaleh, Mohammad; Niknam, Vahid; Ebrahimzadeh, Hassan] Univ Tehran, Sch Biol, Coll Sci, Tehran 141556455, Iran. [Razavi, Khadijeh] Natl Inst Genet Engn & Biotechnol NIGEB, Dept Plant Biotechnol, Tehran 141556343, Iran. Aghaleh, M, Univ Tehran, Sch Biol, Coll Sci, Tehran 141556455, Iran. Aghaleh@khayam.ut.ac.ir vniknam@khayam.ut.ac.ir
ISSN 0137-5881
ISBN 0137-5881
29-Character Source Abbreviation Acta Physiol. Plant.
Publication Date Jul
Year Published 2011
Volume 33
Issue 4
Beginning Page 1261-1270
Digital Object Identifier (DOI) 10.1007/s11738-010-0656-x
Unique Article Identifier ISI:000291600200021
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