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Version 3.18
Publication Type J
Authors Hajiboland, R., S. Bahrami-Rad, H. Akhani and C. Poschenrieder
Title Salt tolerance mechanisms in three Irano-Turanian Brassicaceae halophytes relatives of Arabidopsis thaliana
Source Journal of Plant Research
Language English
Author Keywords Antioxidative defense system Brassicaceae Lepidium latifolium L Lepidium perfoliatum L Organic osmolytes Schrenkiella parvula thellungiella-halophila salinity stress reactive oxygen growth plants homeostasis chloroplasts accumulation germination superoxide Plant Sciences
Abstract Salt tolerance mechanisms were studied in three Irano-Turanian halophytic species from the Brassicaceae (Lepidium latifolium, L. perfoliatum and Schrenkiella parvula) and compared with the glycophyte Arabidopsis thaliana. According to seed germination under salt stress, L. perfoliatum was the most tolerant species, while L. latifolium and S. parvula were rather susceptible. Contrastingly, based on biomass production L. perfoliatum was more salt sensitive than the other two species. In S. parvula biomass was increased up to 2.8-fold by 100mM NaCl; no significant growth reduction was observed even when exposed to 400mM NaCl. Stable activities of antioxidative defense enzymes, nil or negligible accumulation of superoxide anion and hydrogen peroxide, as well as stable membrane integrity in the three halophytes revealed that no oxidative stress occurred in these tolerant species under salt stress. Proline levels increased in response to salt treatment. However, it contributed only by 0.32.0% to the total osmolyte concentration in the three halophytes (at 400mM NaCl) and even less (0.04%) in the glycophyte, A. thaliana (at 100mM NaCl). Soluble sugars in all three halophytes and free amino acids pool in S. parvula decreased under salt treatment in contrast to the glycophyte, A. thaliana. The contribution of organic osmolytes to the total osmolyte pool increased by salt treatment in the roots, while decreased in halophyte and glycophyte, A. thaliana leaves. Interestingly, this reduction was compensated by a higher relative contribution of K in the leaves of the halophytes, but of Na in A. thaliana. Taken together, biomass data and biochemical indicators show that S. parvula is more salt tolerant than the two Lepidium species. Our data indicate that L. latifolium, as a perennial halophyte with a large biomass, is highly suitable for both restoration of saline habitats and saline agriculture.
Author Address [Hajiboland, Roghieh; Bahrami-Rad, Sara] Univ Tabriz, Dept Plant Sci, Tabriz 5166616471, Iran. [Akhani, Hossein] Univ Tehran, Sch Biol, Dept Plant Sci, Halophytes & Plants Res Lab C4, POB 14155-6455, Tehran, Iran. [Poschenrieder, Charlotte] Univ Autonoma Barcelona, Biosci Fac, Plant Physiol Lab, Bellaterra 08193, Spain. Hajiboland, R (reprint author), Univ Tabriz, Dept Plant Sci, Tabriz 5166616471, Iran. ehsan@tabrizu.ac.ir
ISSN 0918-9440
ISBN 0918-9440
29-Character Source Abbreviation J. Plant Res.
Publication Date Nov
Year Published 2018
Volume 131
Issue 6
Beginning Page 1029-1046
Digital Object Identifier (DOI) 10.1007/s10265-018-1053-6
Unique Article Identifier WOS:000452187800013
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