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  • Title: Description of Chryseobacterium anthropi sp. nov. to accommodate clinical isolates biochemically similar to Kaistella koreensis and Chryseobacterium haifense, proposal to reclassify Kaistella koreensis as Chryseobacterium koreense comb. nov. and emended description of the genus Chryseobacterium.
    Author: Kämpfer P, Vaneechoutte M, Lodders N, De Baere T, Avesani V, Janssens M, Busse HJ, Wauters G.
    Journal: Int J Syst Evol Microbiol; 2009 Oct; 59(Pt 10):2421-8. PubMed ID: 19622666.
    Abstract:
    A collection of eight strains, NF 1366(T), NF 450, NF 1101, NF 1107, NF 1123, NF 1413, CCUG 15260 and CCUG 15624, from various clinical origins, were characterized biochemically as similar to Kaistella koreensis and Chryseobacterium haifense. They differed from K. koreensis, which is unable to alkalinize acetate, and from C. haifense, which is ONPG-positive (beta-galactosidase) and acidifies sucrose, fructose and lactose. Based on 16S rRNA gene sequence comparisons, this collection of strains was most closely related to the type strains of K. koreensis (97.3-97.5 %) and C. haifense (99.1 %). Representative strain NF 1366(T) showed only 41.8 % DNA-DNA relatedness with K. koreensis DSM 12107(T) and only 51.9 % with C. haifense DSM 19056(T). DNA-DNA hybridization of strains NF 450 and CCUG 15624 to strain NF 1366(T) was 41.7 and 74.6 %, respectively, and relatedness of these strains with C. haifense DSM 19056(T) was 72.6 and 70.2 %. With the present information, these two strains must be classified as intermediate between C. haifense and strain NF 1366(T). The fatty acid composition and polar lipid profile of strain NF 1366(T) were similar to those reported for other Chryseobacterium species. Like other chryseobacteria, strain NF 1366(T) exhibited a polyamine pattern with the predominant compound sym-homospermidine and a quinone system consisting of menaquinone MK-6 only. For this collection of clinical strains, the name Chryseobacterium anthropi sp. nov. is proposed, with NF 1366(T) (=CCUG 52764(T) =CIP 109762(T)) as the type strain. K. koreensis was shown to be very similar genotypically and phenotypically to Chryseobacterium. Its polar lipid profile exhibited the major characteristics shown for recently described Chryseobacterium species and the fatty acid profile of K. koreensis was also very similar to those of the Chryseobacterium species. Hence, no striking genotypic or phenotypic differences could be found that could justify the classification of this species into a separate genus, and we therefore propose to reclassify Kaistella koreensis in the genus Chryseobacterium as Chryseobacterium koreense comb. nov. (type strain Chj707(T) =IAM 15050(T) =JCM 21512(T) =KCTC 12107(T) =NBRC 103027(T)). An emended description of the genus Chryseobacterium is also proposed.
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