Telluribacter humicola gen. nov., sp nov., a new member of the family Cytophagaceae isolated from soil in South Korea

Abstract

A pink-pigmented, gram-negative, non-motile, non-gliding, flexirubin-negative, rod-shaped and strictly aerobic bacterial strain, designated PTR3(T), was isolated from a soil sample from Goyang, South Korea. Growth occurred between 10 and 42 A degrees C (optimum 30 A degrees C), 0-4 % (w/v) NaCl (optimum 0 %) and pH 6-9 (optimum 7-8). Phylogenetic analysis based on 16S rRNA sequences showed that strain PTR3(T) forms a distinct clade with type strains of the closely related genus, Dyadobacter, with similarities of 93.6 and 91.3-93.6 %, respectively. The strain produces a pink carotenoid pigment(s). The major polar lipids are an unidentified aminophospholipid and an aminolipid. Strain PTR3(T) was found to contain MK-7 as the predominant menaquinone and C-16:1 omega 7c and/or C-16:1 omega 6c as the major fatty acids. The DNA G + C content of strain PTR3(T) was deterrmined to be 45.9 mol %. Based on the chemotaxonomic, phylogenetic and other physiological properties, strain PTR3(T) (=KCTC 42819(T) = JCM 31133(T)) is concluded to represent a novel species in a new genus within the family Cytophagaceae, for which the name Telluribacter humicola gen nov., sp. nov., is proposed.