A novel bacterial strain belonging to the genus
Roseomonas was isolated from the trunk surface of a mono maple (
Acer mono) tree growing in the Shirakami Mountains. The strain, designated R-1
T, was Gram-negative, non-motile, and oval-rod, and formed reddish colonies on agar plates, as has previously been described for
Roseomonas species. Although motility was not observed, cells were peritrichously flagellated. Strain R-1
T preferred organic acids over carbohydrates as growth substrates. The major cellular fatty acid was C
18:1 ω7c (48.79%). Ubiquinone-10 was the major respiratory quinone. Strain R-1
T demonstrated the highest 16S rRNA gene sequence similarity with
Roseomonas pecuniae N75
T (96.9%). Phylogenetic analysis based on 16S rRNA gene sequences confirmed that strain R-1
T was a member of the genus
Roseomonas and formed a cluster with
R. pecuniae N75
T. DNA-DNA hybridization between strain R-1
T and
R. pecuniae N75
T yielded 21.7% relatedness. On the basis of its phenotypic, phylogenetic, and chemotaxonomic characteristics, strain R-1
T represents a novel species within the genus
Roseomonas, for which the name
Roseomonas aceris sp. nov. has been proposed. The type strain is R-1
T (NBRC 109410
T = DSM 26554
T).
View full abstract