Abstract
An aerobic, Gram
stain-negative, oxidase- and catalase-positive, non-motile, non-spore-forming,
rod-shaped, pink-pigmented bacterium designated strain R49T was
isolated from soil. Flexirubin-type pigments were absent. A phylogenetic
analysis based on its 16S rRNA gene sequence revealed that strain R49T
formed a lineage within the family Cytophagaceae
of the phylum Bacteroidetes that was
distinct from the most closely related genera Dyadobacter (91.98–93.85% sequence similarity), Persicitalea (88.69% sequence
similarity), and Runella (84.79–85.81%
sequence similarity). The major isoprenoid quinone was menaquinone-7
(MK-7) and major polar lipid was phosphatidylethanolamine (PE). The major
cellular fatty acids were summed feature 3 (C16:1w7c and/or C16:1w6c), iso-C15:0, C16:1w5c, C16:0, and iso-C17:0 3-OH.
The DNA G+C content of strain R49T was 53.9 mol%. On the basis of
phenotypic, genotypic and phylogenetic analysis, strain R49T
represents a novel species of a new genus in the family Cytophagaceae, for which the name Rhabdobacter roseus gen. nov., sp. nov. is proposed. The type
strain of Rhabdobacter roseus is R49T
(= KEMB 9005-318T = KACC 18395T = JCM 30685T).
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| TEM image of Rhabdobacter roseus |
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