Strains of Bradyrhizobium cosmicum sp. nov., isolated from contrasting habitats in Japan and Canada possess photosynthesis gene clusters with the hallmark of genomic islands.

ABSTRACT: The taxonomic status of two previously characterized Bradyrhizobium strains (58S1^T and S23321) isolated from contrasting habitats in Canada and Japan was verified by genomic and phenotypic analyses. Phylogenetic analyses of five and 27 concatenated protein-encoding core gene sequences placed both strains in a highly supported lineage distinct from named species in the genus Bradyrhizobium with Bradyrhizobium betae as the closest relative. Average nucleotide identity values of genome sequences between the test and reference strains were between 84.5 and 94.2 %, which is below the threshold value for bacterial species circumscription. The complete genomes of strains 58S1^T and S23321 consist of single chromosomes of 7.30 and 7.23 Mbp, respectively, a

SUBMITTER: Wasai-Hara S 

PROVIDER: S-EPMC7656271 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature