Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 51, Issue -, Pages 1315-1322Publisher
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/00207713-51-4-1315
Keywords
Bradyrhizobium; DNA-DNA hybridizations; AFLP
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DNA-DNA hybridizations were performed between Bradyrhizobium strains, isolated mainly from Faidherbia albida and Aeschynomene species, as well as Bradyrhizobium reference strains. Results indicated that the genus Bradyrhirobium consists of at least 11 genospecies, I to XI, The genospecies formed four subgeneric groups that were more closely related to each other (> 40% DNA hybridization) than to other genospecies (< 40% DNA hybridization) : (i) genospecies I (Bradyrhilobium japonicum), III (Bradyrhizobium liaoningense), IV and V; (ii) genospecies VI and VIII; (iii) genospecies VII and IX; and (iv) genospecies II (Bradyrhizobium elkanii), X and XI. Photosynthetic Aeschynomene isolates were found to belong to at least two distinct genospecies in one subgeneric group, DNA-DNA hybridization data are compared with data from amplified fragment length polymorphism analysis and 16S-23S rDNA spacer sequence analysis.
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