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Chryseobacterium treverense sp. nov., isolated from human clinical source

¹ Inst Med Mikrobiologie & Immunologie, Univ Bonn, Sigmund-Freud-Straße 2, Bonn, Germany;
² Kekulé-Inst für Organische Chemie & Biochemie, Univ Bonn, 53121 Bonn, Germany;
³ Inst Bakteriologie, Mykologie & Hygiene, Veterinärmedizinische Univ Wien, A-1210 Wien, Austria

⁴ E-mail: yassin{at}mibi03.meb.uni-bonn.de

A yellow pigmented, Gram-reaction-negative bacterium isolated from a human clinical source was investigated in a polyphasic approach in order to clarify its taxonomic status. Comparative 16S rRNA gene sequence analysis showed that the isolate constituted a distinct phyletic line within the genus Chryseobacterium, displaying >2.8 % sequence divergence with recognized Chryseobacterium species. The generic assignment was confirmed by chemotaxonomic data which revealed the presence of fatty acids profile consisting of straight-chain saturated, monounsaturated and branched-chain fatty acids of the iso-/anteiso-types as well as 3-hydroxylated fatty acids; menaquinone with six isoprene units (MK-6) as the predominant respiratory quinone; in the polyamine pattern sym-homospermidine was the predominant compound. The novel isolate was distinguished from other members of the genus Chryseobacterium by using a set of biochemical properties. On the basis of phenotypic and phylogenetic evidence, it is proposed that the isolate be classified as a novel species of the genus Chryseobacterium. The name proposed for the novel species is Chryseobacterium treverense sp. nov., with the type strain IMMIB L-1519T (=DSM 22251T=CCUG 57657T).