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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Phenotypic and genotypic characteristics of Acacia senegal (L.) Willd. root-nodulating bacteria isolated from soils in the dryland part of Senegal
Letters in Applied Microbiology, Volume 47, No. 2, Year 2008
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Description
Aims: We characterized phenotypically and genotypically root-nodulating bacteria associated with Acacia senegal (L.) Willd. isolated from the soils surrounding A. senegal trees in the dry land area of Senegal. Methods and Results: The phenotypical and genotypical characterizations we carried out showed a high diversity of A. senegal root-nodulating bacteria. Phenotypic patterns showed adaptations of the rhizobial strains to many environmental stresses such as heat, drought, and salinity. Twelve molecular groups were distinguished by profiles obtained using polymerase chain reaction/restriction fragment length polymorphism techniques from intergenic spacer region rDNA. The highest genetic diversity was found around the A. senegal rhizosphere. Therefore, A. senegal seemed to have a positive influence on occurrence and genotypical diversity of rhizobial populations. Rhizobial isolates obtained in this study belonged phylogenetically to the genera Mesorhizobium and Rhizobium. Conclusions: Our results provided information about the genetic diversity of the rhizobial strains associated with A. senegal and suggested the adaptability of natural rhizobial populations to major ecological environmental stress within these soil environments. Significance and Impact of the Study: These results suggested a potential selection of compatible and well adapted strains under stress conditions as inoculants for successful A. senegal growth in arid lands. © 2008 The Authors.
Authors & Co-Authors
Fall, Dioumacor
Senegal, Dakar
Université Cheikh Anta Diop de Dakar
Senegal, Dakar
Institut Sénégalais de Recherches Agricoles Dakar
Diouf, Diaga
Senegal, Dakar
Université Cheikh Anta Diop de Dakar
Senegal, Dakar
Institut Sénégalais de Recherches Agricoles Dakar
Ourarhi, M.
Morocco, Oujda
Université Mohammed Premier Oujda
Faye, Aliou
Senegal, Dakar
Institut Sénégalais de Recherches Agricoles Dakar
Abdelmounen, H.
Morocco, Oujda
Université Mohammed Premier Oujda
Neyra, Marc
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Sylla, Samba Ndao
Senegal, Dakar
Université Cheikh Anta Diop de Dakar
Senegal, Dakar
Institut Sénégalais de Recherches Agricoles Dakar
Missbah El Idrissi, Mustapha
Morocco, Oujda
Université Mohammed Premier Oujda
Statistics
Citations: 40
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1111/j.1472-765X.2008.02389.x
ISSN:
02668254
e-ISSN:
1472765X
Research Areas
Genetics And Genomics
Study Locations
Senegal