English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/26829
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 6 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL

Phenotypic and genotypic characterizations of rhizobia isolated from root nodules of peanut (Arachis hypogaea L.) grown in Moroccan soils

AutorEl-Akhal, M. Rabie; Rincón, Ana ; El Mourabit, Nourdin; Pueyo, José Javier ; Barrijal, Said
Palabras claveArachis hypogaea
Fecha de publicación2009
CitaciónJournal of Basic Microbiology 49: 415-425 (2009)
ResumenThe phenotypic and genotypic characterization of sixty-two rhizobial isolates obtained from nodules of Arachis hypogaea in north-western Morocco was performed. Their physiological and biochemical properties revealed a great deal of diversity among them. Isolates were classified into two major groups based on the numerical analysis of their phenotypic and genotypic characteristics. Isolates in the first group were alkali- and salt-sensitive, slow or extra-slow growers; they did not use disaccharides as carbon source and varied in the use of amino acids. ARDRA analysis of the 16S rDNA region grouped them together with reference strains belonging to the genus Bradyrhizobium. In the second group, isolates were fast growers, acidsensitive, and alkali- and salt-tolerant; they used both mono and disaccharides as carbon sources, and methionine was the only amino acid they could metabolize as a nitrogen source. ARDRA analysis grouped them with fast-growing reference strains. Both groups exhibited a range of variability in tolerance to heavy metals. The Intergenic Spacer (IGS)-PCR fingerprinting analysis confirmed a high genotypic diversity at the strain level. This characterization provides a basis for the selection of peanut-nodulating rhizobia which may have applications in formulating appropriate inocula for improving peanut crop yield on Moroccan soils, including saline and acidic marginal areas.
Versión del editorhttp://dx.doi.org/10.1002/jobm.200800359
Aparece en las colecciones: (IRN) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.