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Abstract

The genus currently includes 12 species with validly published names, the majority of which are closely associated with honeybees. A Gram-positive, facultatively anaerobic, catalase-negative and fructose-dependent strain, designated 1-1-2, was isolated from the gut of a honeybee (). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 1-1-2ᵀ represents a distinct lineage within the genus , with its closest phylogenetic neighbours being YH-15 (99.8% sequence similarity), HN36-1 (99.8%) and Fhon13N (98.8%). The complete genome of strain 1-1-2 comprised 1,596,221 bp, with a G+C content of 37.1 mol%. Pairwise comparisons of average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between strain 1-1-2 and its closest phylogenetic neighbours – DSMZ 12361, HN36-1 and Fhon13N – revealed ANI values ranging from 80.1% to 93.8% and dDDH values ranging from 22.6% to 52.1%. Strain 1-1-2 can also be distinguished from its closest relatives based on phenotypic and chemotaxonomic characteristics. Accordingly, we propose that strain 1-1-2 represents a novel species within the genus , for which the name sp. nov. is proposed, with 1-1-2 (=BCRC 81468=NBRC 117233) as the type strain.

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/content/journal/ijsem/10.1099/ijsem.0.006971
2025-11-14
2025-12-15

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