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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
A halophilic and osmotolerant Azospirillum brasilense strain from algerian soil restores wheat growth under saline conditions
Engineering in Life Sciences, Volume 7, No. 4, Year 2007
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Description
A new bacterial isolate (NH) from salt-affected soil was identified as Azospirillum brasilense using phenotypic analyses and 16SrDNA-based phylogeny. This isolate showed resistance towards 3,4-dehydroproline and optimal growth at 200 mmol/L NaCl, tolerating salt stress of 300 mmol/L NaCl in the absence of osmoprotectants and up to 600 mmol/L NaCl in the presence of glycine betaine and Ulva lactuca extracts. This effect was enhanced with extracts of the marine algae Ulva lactuca. A. brasilense strain NH can produce auxin indole acetic acid under saline conditions. The hypothesis was tested that the inoculation of this osmotolerant rhizosphere strain could improve the growth of wheat under saline stress conditions. Normal wheat growth was restored in the presence of both 150 mmol/L and 200 mmol/L NaCl after inoculation with A. brasilense NH. Under saline conditions, its effect of promoting plant growth of wheat was significantly superior to that of A. brasilense Sp7, the non-halotolerant type strain. A. brasilense NH restored wheat growth at elevated salt concentrations in pot and field experiments even better in the presence of osmoprotective Ulva lactuca extracts. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Authors & Co-Authors
Nabti, El Hafid
Algeria, Bejaia
Université Abderrahmane Mira - Béjaïa
Sahnoune, Mohamed
Algeria, Bejaia
Université Abderrahmane Mira - Béjaïa
Adjrad, S.
Algeria, Bejaia
Université Abderrahmane Mira - Béjaïa
Van Dommelen, A.
Belgium, Leuven
Ku Leuven
Ghoul, Mostefa
Algeria, Setif
Université Ferhat Abbas Sétif 1
Schmid, Michael
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Hartmann, Anton
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Statistics
Citations: 55
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1002/elsc.200720201
e-ISSN:
16182863