Pseudocnuella soli gen. nov., sp. nov., a bacterium from soil belonging to the family Chitinophagaceae
2021
Maeng, Soohyun | Park, Yuna | Han, Ju Hyun | Lee, Sang Eun | Kim, Myung Kyum | Subramani, Gayathri
A Gram-stain negative, aerobic, rod-shaped, yellow-coloured bacterium, designated strain 17J28-1ᵀ, was isolated from soil of Jeju Island, Korea. Optimal growth was found to occur at 30 °C, at pH 6.0 and in the absence of NaCl on R2A at 30 °C. Strain 17J28-1ᵀ showed resistance to UV-radiation. The draft genome sequence of strain 17J28-1ᵀ is 4804,510 bp long with a 49.4% G + C content. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain 17J28-1ᵀ forms a distinct lineage within the family Chitinophagaceae (order Chitinophagales, class Chitinophagia) and is closely related to Cnuella takakiae (93.7% 16S rRNA gene sequence similarity) and Flavisolibacter ginsengiterrae (93.1%). In addition, genomic comparison using digital DNA–DNA hybridization (dDDH) and OrthoANI analyses between the novel organism and the members of the family Chitinophagaceae revealed identities of 65.5–74.1% and 18.1–28%, respectively. The predominant cellular fatty acids were identified as C₁₅:₀ iso, C₁₅:₁ iso G and C₁₇:₀ iso 3-OH and the major respiratory quinone as MK-7. Based on these data we propose that strain 17J28-1ᵀ (= KCTC 62223ᵀ = JCM 33202ᵀ) represents a novel genus and species in the family Chitinophagaceae, for which the name Pseudocnuella soli gen. nov. sp. nov. is proposed.
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