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Chryseobacterium hominis sp. nov., to accommodate clinical isolates biochemically similar to CDC groups II-h and II-c

¹ Department of Clinical Chemistry, Microbiology and Immunology, University of Ghent, Ghent, Belgium
² Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität Giessen, Germany
³ Microbiology Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium

Correspondence
Mario Vaneechoutte
Mario.Vaneechoutte{at}UGent.be

A collection of eight clinical strains from Belgian hospitals and three clinical strains of the CCUG collection were characterized biochemically as being similar to CDC groups II-h and II-c; the latter differs from group II-h only by positivity for sucrose acidification. These 11 strains were found to cluster according to 16S rRNA gene sequence similarity at a level of 99.5 %, and on the basis of their tDNA-PCR profile. Based on 16S rRNA gene sequence analysis, this collection of strains was related most closely to Chryseobacterium hispanicum (97.2 %), but they differed from the type strain of this species by the following phenotypic characteristics: growth at 37 °C, negativity for xylose acidification, positivity for acetate assimilation–alkalinization on Simmons’ agar base and absence of flexirubin pigments, and by their tDNA-PCR profile. Strain NF802^T showed only 57.8 % DNA–DNA relatedness to the type strain of C. hispanicum. Fatty acid composition did not enable differentiation from C. hispanicum. The DNA G+C content of strain NF802^T is 36.5 mol%. The name Chryseobacterium hominis sp. nov. is proposed for this taxon, with type strain NF802^T (=CCUG 52711^T=CIP 109415^T).

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of C. hominis are AM261868 and AM423079–AM423088.

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