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Colutea arborescens is nodulated by diverse rhizobia in Eastern Morocco

Mohammed, Ourarhi and Abdelmoumen, Hanaa and Guerrouj, Kamal and Benata, Hanane and Muresu, Rosella and Squartini, Andrea and El Idrissi, Mustapha Missbah (2011) Colutea arborescensis nodulated by diverse rhizobia in Eastern Morocco. Archives of Microbiology, Vol. 193 (2), p. 115-124. ISSN 0302-8933. eISSN 1432-072X. Article.

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DOI: 10.1007/s00203-010-0650-0


Eighteen isolates of rhizobia isolated from root nodules of Colutea arborescens (Bladder senna) grown in different soils of the eastern area of Morocco were characterized by phenotypic and genomic analyses. All the isolates characterized were fast growers. This is may be due to the isolation procedures used. The phenotypic, symbiotic and cultural characteristics analyzed allowed the description of a wide physiological diversity among tested isolates. The results obtained suggest that the phenotype of these rhizobia might have convergent evolved to adapt the local conditions. The genetic characterization consisted in an analysis of the rep-PCR Wngerprints and the PCR-based RFLP of the 16S rDNA patterns. The 16S rDNA of six isolates representing the main ribotypes obtained by the PCR-based RFLP was sequenced. A large diversity was observed among these rhizobia, and they were classified as different species of the genera Rhizobium, Sinorhizobium and Mesorhizobium. The nodC gene was also sequenced, and the results confirmed the three lineages corresponding to the three genera. The results of the sequencing of nodC and 16S rDNA genes suggest that the nodulation genes and chromosome might have co-evolved among these bacteria.

Item Type:Article
ID Code:6155
Uncontrolled Keywords:Colutea arborescens, Bladder senna, rhizobia, phenotypic diversity, genetic diversity
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/16 Microbiologia agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze agronomiche e genetica vegetale agraria
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto per il sistema produzione animale in ambiente Mediterraneo, Sassari
Publisher:Springer Berlin / Heidelberg
Copyright Holders:© Springer-Verlag 2010
Additional Information:The online version of this article contains supplementary material, which is available to authorized users.
Deposited On:13 Jun 2011 14:09

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