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Publication Type J
Authors Sobhanian, H., N. Motamed, F. R. Jazii, K. Razavi, V. Niknam and S. Komatsu
Title Salt Stress Responses of a Halophytic Grass Aeluropus lagopoides and Subsequent Recovery
Source Russian Journal of Plant Physiology
Author Keywords Aeluropus lagopoides antioxidant enzymes growth halophyte ion content proline recovery salt stress water-stress tolerance proline peroxidase catalase
Abstract To investigate the salt tolerance mechanisms, Aeluropus lagopoides as a halophytic plant was used. Plants were treated with 0, 150, 450, 600, and 750 mM NaCl and harvested at 0, 4, 8, and 10 days after treatment and 1 day and 1 week after recovery. Optimal growth, measured as fresh and dry weights, occurred at 150 mM NaCl, but it was suppressed by 450, 600, and 750 mM NaCl. Recovery significantly increased fresh and dry weights only in 750 mM NaCl-treated plants. Water content was decreased after NaCl treatment and increased after recovery. Na+ and proline contents and activity of superoxide dismutase (SOD) were increased after NaCl treatment and decreased after recovery in all treated plants. In contrast, K+ content and ascorbate peroxidase activity decreased after NaCl treatment and increased after recovery in all treated plants. Catalase (CAT) was activated only in 750 mM NaCl-treated plants. Total content of soluble protein was slightly changed after NaCl treatment. It was concluded that proline accumulation for osmotic adjustment, SOD activation for O-2(center dot-) scavenging, and CAT activation at the higher level of salt stress to detoxify produced H2O2 were main A. lagopoides strategies under salt stress. A. lagopoides salt tolerance was not based on the restriction of Na+ uptake.
Author Address [Sobhanian, Hamid; Motamed, Nasrin; Niknam, Vahid] Univ Tehran, Sch Biol, Coll Sci, Tehran 141556455, Iran. [Sobhanian, Hamid; Jazii, Ferdous Rastgar; Razavi, Khadija] Natl Res Ctr Genet Engn & Biotechnol, Tehran 141556343, Iran. [Sobhanian, Hamid; Komatsu, Setsuko] Natl Inst Crop Sci, Tsukuba, Ibaraki 3058518, Japan. [Sobhanian, Hamid] Payame Noor Univ, Tehran 193954697, Iran. Sobhanian, H, Univ Tehran, Sch Biol, Coll Sci, Tehran 141556455, Iran. motamed2@khayam.ut.ac.ir
ISSN 1021-4437
ISBN 1021-4437
29-Character Source Abbreviation Russ. J. Plant Physiol.
Publication Date Nov
Year Published 2010
Volume 57
Issue 6
Beginning Page 784-791
Digital Object Identifier (DOI) 10.1134/s1021443710060063
Unique Article Identifier ISI:000286059600006
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