Abstract
In recent years we have characterized 250 Bradyrhizobium strains, mainly from Senegal, using several taxonomic techniques i.e. numerical taxonomy of pheno-typic features, Biolog system, SDS-PAGE of total cellular proteins, 16S rDNA RFLP and sequence analyses, 16S-23S rDNA intergenic gene spacer RFLP and sequence analyses, AFLP, DNA:DNA hybridizations. Here we evaluate the taxonomic resolving power of these techniques by comparing the results obtained on various subsets of the same strains. We conclude that AFLP is a useful method for an initial grouping of Bradyrhizobium strains and provides infraspecific information. However, from a limited comparison, it appears that the less labor-intensive 16S-23S rDNA intergenic gene spacer analysis gives similar results and may provide additional information on deeper groupings.
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