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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 11

sp. nov. isolated from a root nodule of the introduced legume in Uruguay No Access

Abstract

A strain, namely Oc8, was isolated from a root nodule of in Uruguay. This strain induced effective nodules in roots of , , and . Oc8 belongs to the genus according to the results of the 16S rRNA gene sequence analysis, and it forms an independent lineage within a cluster encompassing 13 described species of this genus. From them, the type strains closest related to the strain Oc8 with more than 99.5% similarity in 16S rRNA gene sequence were those of , , and (99.71%, 99.65%, 99.60% and 99.57%, respectively). A genome-based phylogeny showed that JCM 19881, CTAW11 and CTAW71 were the closest type strains to the strain Oc8. Values lower than the species cutoff of 95% and 70% were found after average nucleotide identity and digital DNA–DNA hybridization calculation between the genome of the strain Oc8 and those available genomes of the closest related species. These results, together with those of the symbiotic gene analysis, support the affiliation of this strain to the symbiovar cyanophyllae of a new species of for which the name sp. nov. is proposed. The type strain is Oc8 (=LMG 33261=CECT 30885).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Bradyrhizobium , Bradyrhizobium monzae , Crotalaria , rhizobia and Uruguay
Funding
This study was supported by the:
  • Instituto Nacional de Investigacion Agropecuaria, Uruguay (Award INIA L-1)
    • Principal Award Recipient: NotApplicable
© 2025 The Authors
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Bradyrhizobium monzae sp. nov. isolated from a root nodule of the introduced legume Crotalaria ochroleuca in Uruguay
Int J Syst Evol Microbiol 75, 006973 (2025); https://doi.org/10.1099/ijsem.0.006973
/content/journal/ijsem/10.1099/ijsem.0.006973
/content/journal/ijsem/10.1099/ijsem.0.006973
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