Flaviaesturariibacter flavus sp. nov., isolated from soil in Jeju Island

A Gram-stain-negative, non-motile and yellow-colored bacterium, designated 17J68-12^T, was isolated from soil in Jeju Island, Korea. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain 17J68-12^T formed a distinct lineage within the family Chitinophagaceae and was mostly related to members of Flaviaesturariibacter luteus (97.5%), Flaviaesturariibacter amylovorans (96.8%) and Flaviaesturariibacter terrae (96.8%). Growth was observed at 18–42 °C (optimum 30 °C) in R2A broth at pH 7.0. The major cellular fatty acids of the strain 17J68-12 ^T were summed feature 3 (C_16:1ω6c and/or C_16:1ω7c), summed feature 1 (C_15:1 iso-H and/or C_13:0 3-OH), and iso-C_15:0. The predominant respiratory quinones are MK-7 and MK-6. The major polar lipid was identified as phosphatidylethanolamine. Based on biochemical, chemotaxonomic and phylogenetic characteristics, the strain 17J68-12^T represents a novel bacterial species within the family Chitinophagaceae, for which the name Flaviaesturariibacter flavus sp. nov. is proposed. The type strain of Flaviaesturariibacter flavus is 17J68-12^T (= KCTC 62219^T = JCM 33179^T).