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Int J Syst Evol Microbiol 59 (2009), 2232-2237; DOI  10.1099/ijs.0.007823-0
© 2009 International Union of Microbiological Societies

Phocaeicola abscessus gen. nov., sp. nov., an anaerobic bacterium isolated from a human brain abscess sample

Mouhamad Al Masalma, Didier Raoult and Véronique Roux

Laboratoire de Bactériologie–Virologie, Hôpital de la Timone, URMITE CNRS-IRD UMR6236, IFR48, 264 rue Saint-Pierre, 13385 Marseille, Cedex 05, France

Correspondence
Véronique Roux
vroux91{at}hotmail.com

A strictly anaerobic bacterial strain, 7401987T, was isolated from a human brain abscess sample. Cells were Gram-negative, non-spore-forming, coccoid to rod-shaped and motile by flagella in a lophotrichous arrangement. The isolate was asaccharolytic and the major cellular fatty acids were anteiso-C15 : 0 (28.2 %), C16 : 0 (18.0 %), iso-C15 : 0 (12.3 %) and iso-C17 : 0 3-OH (11.7 %). 16S rRNA gene sequence comparisons showed that the isolate was distantly related to members of the genera Bacteroides (<83.6 % similarity), Parabacteroides (<79.9 % similarity), Tannerella (<79.8 % similarity), Dysgonomonas (<79.6 % similarity), Porphyromonas (<79.3 % similarity) and Prevotella (<78.9 % similarity). The low 16S rRNA gene sequence similarity values and physiological and biochemical characteristics differentiated strain 7401987T from all known species and indicate that our isolate represents a novel species in a new genus within the phylum Bacteroidetes. The name Phocaeicola abscessus gen. nov., sp. nov. is proposed; the type strain of Phocaeicola abscessus is 7401987T (=CCUG 55929T =CSUR P22T =DSM 21584T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Phocaeicola abscessus strain 7401987T is EU694176.

16S rRNA gene sequence similarities between strain 7401987T and members of some of the most closely related genera are available as supplementary material with the online version of this paper.






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Copyright © 2009 by the International Union of Microbiological Societies.