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Publication Type J
Authors Mansour, SR; Abdel-lateif, K; Bogusz, D; Franche, C
Author Full Name Mansour, Samira R.; Abdel-lateif, Khalid; Bogusz, Didier; Franche, Claudine
Title Influence of salt stress on inoculated Casuarina glauca seedlings
Source SYMBIOSIS
Language English
Document Type Article; Proceedings Paper
Conference Title 18th International Meeting on Frankia and Actinorhizal Plant (ACTINO)
Conference Date AUG 24-27, 2015
Conference Location Montpellier, FRANCE
Author Keywords Casuarina glauca; Frankia endosymbiont; Salinity; Soil rehabilitation
Keywords Plus NITROGEN-FIXATION; SODIUM-CHLORIDE; STRAIN HFPCGI4; ROOT-NODULES; WATER-STRESS; GROWTH; PLANTS; EQUISETIFOLIA; TOLERANCE; SALINITY
Abstract Salinity is a serious threat to agriculture in arid and semi-arid regions including Egypt. There is currently a need to select highly salt-tolerant plants to improve recycling of agricultural drainage waters. Due to the importance of Casuarina in soil reclamation and rehabilitation, our study was carried out to evaluate the survival and growth of inoculated Casuarina glauca in hydroponic N-free medium supplemented with different NaCl concentrations (50, 100, 200, 300, 400 and 500 mM). Salt tolerant Frankia strains CcI156 and CgIM4, isolated from root nodules of Casuarina trees grown in loamy sand soils in Egypt, were used for seedling inoculation. Our results showed that inoculated Casuarina seedlings were able to withstand up to 200 mM NaCl. At higher NaCl concentrations (300 to 500 mM), the seedling died gradually three days after exposure to salt stress. However, at lower NaCl (50 mM) concentration, inoculated C. glauca seedlings showed a higher growth rate and higher percentages of nodulation. Nitrogenase activity and the total nitrogen content of nodulated seedlings were also influenced by elevated NaCl concentrations and recorded a reduction at high concentration (200 mM). Salt stress had a strong effect on biosynthesis of osmoprotectants molecules like L-Proline and carbohydrates, which strongly correlated (r = 0.98 and 0.87, respectively) with increasing salt concentrations.
Author Address [Mansour, Samira R.] Suez Canal Univ, Dept Bot, Fac Sci, Ismailia, Egypt; [Abdel-lateif, Khalid] Menoufia Univ, Dept Genet, Fac Agr, Shibin Al Kawm, Menoufia Govern, Egypt; [Bogusz, Didier; Franche, Claudine] IRD, Equipe Rhizogenese, UMR DIADE, BP 64501, F-34394 Montpellier 5, France
Reprint Address Mansour, SR (reprint author), Suez Canal Univ, Dept Bot, Fac Sci, Ismailia, Egypt.
E-mail Address samirarmansour@hotmail.com
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Cited Reference Count 38
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0334-5114
29-Character Source Abbreviation SYMBIOSIS
ISO Source Abbreviation Symbiosis
Publication Date NOV
Year Published 2016
Volume 70
Issue 1-3
Beginning Page 129
Ending Page 138
Digital Object Identifier (DOI) 10.1007/s13199-016-0425-8
Page Count 10
Web of Science Category Microbiology
Subject Category Microbiology
Document Delivery Number DT8SS
Unique Article Identifier WOS:000381764800015
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