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Int J Syst Evol Microbiol 57 (2007), 2623-2628; DOI  10.1099/ijs.0.65158-0
© 2007 International Union of Microbiological Societies

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

Mario Vaneechoutte1, Peter Kämpfer2, Thierry De Baere1, Véronique Avesani3, Michèle Janssens3 and Georges Wauters3

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 NF802T 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 NF802T is 36.5 mol%. The name Chryseobacterium hominis sp. nov. is proposed for this taxon, with type strain NF802T (=CCUG 52711T=CIP 109415T).

Abbreviations: tDNA-PCR, tRNA intergenic length polymorphism analysis

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






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