Genetic diversity of rhizobia nodulating Arachis hypogaea L. in Central Argentinean Soils

TAURIAN, T., IBAÑEZ, F., FABRA, A., AND AGUILAR, O.M

PLANT AND SOIL

Springer

Lugar: The Netherlands; Año: 2006 vol. 282 p. 41 - 52

0032-079X

Abstract The diversity of thirty-nine isolates from peanut plants growing at fourteen different sites in the Argentinean province of Co´ rdoba was examined by rep-PCR, RFLP of PCR amplified 16S rRNA gene and complete sequencing of ribosomal genes. The genomic analysis of the peanut isolates indicated that each group encompasses heterogeneity among their members, having distinct rep fingerprints and 16S rRNA complete sequencing of ribosomal genes. The genomic analysis of the peanut isolates indicated that each group encompasses heterogeneity among their members, having distinct rep fingerprints and 16S rRNA 16S rRNA gene and complete sequencing of ribosomal genes. The genomic analysis of the peanut isolates indicated that each group encompasses heterogeneity among their members, having distinct rep fingerprints and 16S rRNA16S rRNA alleles. Complete sequencing of 16S rRNA demonstrated that native peanut rhizobia from Co´ rdoba soils representative of the slow and fast growers are phylogenetically related to Bradyrhizobium japonicum and representative of the slow and fast growers are phylogenetically related to Bradyrhizobium japonicum and 16S rRNA demonstrated that native peanut rhizobia from Co´ rdoba soils representative of the slow and fast growers are phylogenetically related to Bradyrhizobium japonicum andBradyrhizobium japonicum and Bradyrhizobium sp. and Rhizobium giardinii and R. tropici species, respectively. The nodC gene sequence analysis showed phylogenetic similarity between fast grower peanut symbionts and Rhizobium tropici. analysis showed phylogenetic similarity between fast grower peanut symbionts and Rhizobium tropici. sp. and Rhizobium giardinii and R. tropici species, respectively. The nodC gene sequence analysis showed phylogenetic similarity between fast grower peanut symbionts and Rhizobium tropici.Rhizobium tropici.