Fabivirga thermotolerans gen. nov., sp nov., a novel marine bacterium isolated from culture broth of a marine cyanobacterium

A Gram-stain-negative, red, non-spore-forming, strictly aerobic bacterium, designated strain A4(T), was isolated from culture broth of a marine cyanobacterium. Cells were flexible rods with gliding motility. Phylogenetic analysis, based on 16S rRNA gene sequences, revealed that strain A4(T) formed a coherent cluster with members of the genera Roseivirga and Fabibacter, and represents a distinct lineage in the family Flammeovirgaceae. Thermotolerance and a distinctive cellular fatty acid profile could readily distinguish this isolate from any bacteria of the genera Roseivirga and Fabibacter with a validly published name. On the basis of the phenotypic, chemotaxonomic and phylogenetic characteristics, strain A4(T) is suggested to represent a novel species in a novel genus, for which the name Fabivirga thermotolerans gen. nov., sp. nov. is proposed. The type strain is A4(T) (=KCTC 42507(T)=CGMCC 1.15111(T)).