Cluster Stability Analysis of a Brazilian Collection of Bacteria Bradyrhizobium spp
نویسندگان
چکیده
The taxonomy of N2-fixing bacteria belonging to the genus Bradyrhizobium is still poorly refined. This paper presents an application of a method aiming the identification of possible new clusters within a Brazilian collection of 119 Bradyrhizobium strains showing phenotypic characteristics of B. japonicum and B. elkanii. The stability has been studied as a function of the number of restriction enzymes used in the RFLP-PCR analysis of three ribosomal regions. The method suggested here uses hierarchical clustering algorithms and Pearson correlation. Two clusters were clearly defined besides species B. japonicum and B. elkanii, indicating possible new species.
منابع مشابه
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