Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Relationship between symbiotic nitrogen fixation, sucrose synthesis and anti-oxidant activities in source leaves of two Medicago ciliaris lines cultivated under salt stress
Environmental and Experimental Botany, Volume 70, No. 2-3, Year 2011
Notification
URL copied to clipboard!
Description
The aim of this study was to investigate the effect of NaCl salinity on symbiotic nitrogen fixation (SNF) in a Medicago ciliaris- Sinorhizobium medicae symbiosis system, with special emphasis on two genetically pure lines of M. ciliaris developed from germplasm recovered from saline and non-saline lands. Saline treatment (100 mM NaCl) was applied to these two contrasting lines growing in pots in a greenhouse after the appearance of nodules. At the end of the vegetative period, both lines under salt stress registered a decrease in nitrogenase activity, whole plant and organ biomass production and chlorophyll concentration, but the tolerant line TNC 1.8 was much less affected by salt than the sensitive line TNC 11.9. Salinity also provoked a decrease in sucrose phosphate synthase activity (SPS), mainly in TNC 11.9. The decline in leaf SPS in TNC 11.9 was accompanied by salinity-induced membrane oxidative damage in source leaves of the sensitive line, probably induced by a disturbance in soluble sugar/starch partitioning. We report these physiological and biochemical parameters to promote these useful lines as useful germplasm with potential to reveal detailed transcriptomic and metabolomic information and new genetic tools which could assist breeders in improving salinity tolerance and biomass for pasture legumes. © 2010.
Authors & Co-Authors
Ben Salah, Imène
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Slatni, Tarek
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Gruber, Margaret Yvonne
Canada, Saskatoon
Saskatoon Research and Development Centre
Messedi, Dorsaf
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Gandour, Mhemmed
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Benzarti, Maâli
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Haouala, Rabiaa
Tunisia, Monastir
Institut Supérieur de Biotechnologie de Monastir
Zribi, Kais
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Ben Hamed, K.
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Pérez-Alfocea, P.
Spain, Murcia
Cebas- Csic, Centro de Edafología y Biología Aplicada Del Segura
Abdelly, Chédly
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Statistics
Citations: 36
Authors: 11
Affiliations: 4
Identifiers
Doi:
10.1016/j.envexpbot.2010.08.014
ISSN:
00988472
Research Areas
Genetics And Genomics