title: Chryseobacterium hungaricum sp. nov., isolated from hydrocarbon-contaminated soil.
abstract: The taxonomic position of a strain isolated from kerosene-contaminated soil in Hungary and formerly misidentified as Brevundimonas vesicularis was examined using a polyphasic approach. The isolate, designated CHB-20p(T), could be clearly assigned to the genus Chryseobacterium (family Flavobacteriaceae) on the basis of 16S rRNA gene sequence similarity. Strain CHB-20p(T), a moderate oil degrader, was a Gram-negative, aerobic, mesophilic microbe with a temperature optimum of 28-30 degrees C. Predominant fatty acids were iso-C(15 : 0), summed feature 3 (comprising C(16 : 1)omega7c and/or iso-C(15 : 0) 2-OH) and iso-C(17 : 0) 3-OH. Menaquinone-6 (MK-6) was the predominant respiratory quinone; MK-5 was present as a minor component. The almost complete 16S rRNA gene sequence of strain CHB-20p(T) shared 94-97 % similarity with sequences of the type strains of species of the genus Chryseobacterium. DNA-DNA relatedness between strain CHB-20p(T) and its closest relative, Chryseobacterium caeni, was lower than 46 %. Moreover, several diagnostic phenotypic properties distinguished strain CHB-20p(T) from C. caeni. On the basis of biochemical, chemotaxonomic and genotypic data, isolate CHB-20p(T) represents a novel species within the genus Chryseobacterium, Chryseobacterium hungaricum sp. nov.; the type strain is CHB-20p(T) (=NCAIM B2269(T)=DSM 19684(T)).
authors.affiliation: Department of Environmental Protection and Environmental Safety, Szent István University, Gödöllo, Hungary.
authors.forename: Sándor
authors.initials: S
authors.lastname: Szoboszlay
authors.forename: Béla
authors.initials: B
authors.lastname: Atzél
authors.forename: József
authors.initials: J
authors.lastname: Kukolya
authors.forename: Erika M
authors.initials: EM
authors.lastname: Tóth
authors.forename: Károly
authors.initials: K
authors.lastname: Márialigeti
authors.forename: Peter
authors.initials: P
authors.lastname: Schumann
authors.forename: Balázs
authors.initials: B
authors.lastname: Kriszt
mesh_terms: D045247:Chryseobacterium / Q000737:chemistry / Q000145:classification* / Q000235:genetics / Q000502:physiology*; D005227:Fatty Acids / Q000032:analysis; D006838:Hydrocarbons; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012988:Soil Microbiology; D012989:Soil Pollutants; D013045:Species Specificity
chemical_list: D005227:Fatty Acids; D006838:Hydrocarbons; D012336:RNA, Ribosomal, 16S; D012989:Soil Pollutants