1887

Abstract

A collection of eight strains, NF 1366, 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 and . They differed from , which is unable to alkalinize acetate, and from , which is ONPG-positive (-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 (97.3–97.5 %) and (99.1 %). Representative strain NF 1366 showed only 41.8 % DNA–DNA relatedness with DSM 12107 and only 51.9 % with DSM 19056. DNA–DNA hybridization of strains NF 450 and CCUG 15624 to strain NF 1366 was 41.7 and 74.6 %, respectively, and relatedness of these strains with DSM 19056 was 72.6 and 70.2 %. With the present information, these two strains must be classified as intermediate between and strain NF 1366. The fatty acid composition and polar lipid profile of strain NF 1366 were similar to those reported for other species. Like other chryseobacteria, strain NF 1366 exhibited a polyamine pattern with the predominant compound -homospermidine and a quinone system consisting of menaquinone MK-6 only. For this collection of clinical strains, the name sp. nov. is proposed, with NF 1366 (=CCUG 52764 =CIP 109762) as the type strain. was shown to be very similar genotypically and phenotypically to . Its polar lipid profile exhibited the major characteristics shown for recently described species and the fatty acid profile of was also very similar to those of the 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 in the genus as comb. nov. (type strain Chj707 =IAM 15050 =JCM 21512 =KCTC 12107 =NBRC 103027). An emended description of the genus is also proposed.

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2009-10-01
2024-03-28
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