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Publication Type J
Authors Rabhi, M., S. Hajji, N. Karray-Bouraoui, D. Giuntini, A. Castagna, A. Smaoui, A. Ranieri and C. Abdelly
Title NUTRIENT UPTAKE AND MANAGEMENT UNDER SALINE CONDITIONS IN THE XEROHALOPHYTE: TECTICORNIA INDICA (WILLD.) SUBSP. INDICA
Source Acta Biologica Hungarica
Author Keywords Biomass production cation/sodium selectivity Na-hyperaccumulation nutrient use efficiency xerohalophyte potassium absorption salt tolerance plant roots growth halophytes barley mechanisms seedlings photosynthesis availability
Abstract In the present investigation, we studied uptake and management of the major cations in the xerohalophyte, Tecticornia indica (Willd.) subsp. indica as subjected to salinity. Plants were grown under greenhouse conditions at various salinity levels (0, 100, 200 and 400 mM NaCl) over 110 days. At harvest, they were separated into shoots and roots then analyzed for water contents, dry weights (DW), and Na(+), K(+), Ca(2+), and Mg(2+) contents. Plants showed a growth optimum at 200 mM NaCl and much better tissue hydration under saline than non-saline conditions. At this salt concentration (200 mM NaCl), shoot Na(+) content reached its highest value (7.9 mmol . g(-1) DW). In spite of such stressful conditions, salt-treated plants maintained adequate K(+), Ca(2+), and Mg(2+) status even under severe saline conditions. This was mainly due to their aptitude to selectively acquire these essential cations and efficiently use them for biomass production.
Author Address [Rabhi, M; Hajji, S; Smaoui, A; Abdelly, C] Borj Cedria Ctr Biotechnol, LPE, Hammam Lif 2050, Tunisia [Giuntini, D; Castagna, A; Ranieri, A] Univ Pisa, Dipartimento Chim & Biotechnol Agr, I-56124 Pisa, Italy [Karray-Bouraoui, N] Fac Sci Tunis, Dept Biol, Unite Physiol & Biochim Tolerance Sel Plantes, Tunis 1060, Tunisia Rabhi, M (reprint author), Borj Cedria Ctr Biotechnol, LPE, POB 901, Hammam Lif 2050, Tunisia mokdedrabhi@yahoo.fr
ISSN 0236-5383
ISBN 0236-5383
29-Character Source Abbreviation Acta Biol. Hung.
Publication Date Dec
Year Published 2010
Volume 61
Issue 4
Beginning Page 486-497
Digital Object Identifier (DOI) 10.1556/ABiol.61.2010.4.11
Unique Article Identifier WOS:000284624700011
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