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Int J Syst Evol Microbiol 59 (2009), 1589-1594; DOI  10.1099/ijs.0.003434-0
© 2009 International Union of Microbiological Societies

Vibrio breoganii sp. nov., a non-motile, alginolytic, marine bacterium within the Vibrio halioticoli clade

Roxana Beaz Hidalgo1, Ilse Cleenwerck2, Sabela Balboa1, Susana Prado1, Paul De Vos2 and Jesús L. Romalde1

1 Departamento de Microbiología y Parasitología, Centro de Investigaciones Biológicas (CIBUS)-Facultad de Biología, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
2 BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Ghent University, Ghent, Belgium

Correspondence
Jesús L. Romalde
jesus.romalde{at}usc.es

Seven non-motile, facultatively anaerobic, alginolytic marine bacteria were isolated from the cultured clams Ruditapes philippinarum and Ruditapes decussatus. Phylogenetic analysis based on 16S rRNA gene sequences showed that these marine bacteria were closely related to the recently described species Vibrio comitans, Vibrio rarus and Vibrio inusitatus (≥99.0 % sequence similarity). Phylogenetic analysis based on the housekeeping genes rpoA, recA and atpA grouped the isolates together and allocated them to the Vibrio halioticoli species group. Amplified fragment length polymorphism DNA fingerprinting also grouped them together and enabled them to be differentiated from recognized species of the V. halioticoli clade. DNA–DNA hybridizations showed that the isolates belonged to a novel species; phenotypic features such as the ability to grow at 4 °C and in the presence of 6 % NaCl also enabled them to be separated from other species. The DNA G+C content of RD 15.11T is 44.4 mol%. The genotypic and phenotypic data showed that the isolates represent a novel species in the V. halioticoli clade. The name Vibrio breoganii sp. nov. is proposed, with RD 15.11T (=CECT 7222T =LMG 23858T) as the type strain.

Abbreviations: AFLP, amplified fragment length polymorphism

The GenBank/EMBL/DDBJ accession numbers determined in this study are available with the online version of this paper.

Differential phenotypic characteristics of the seven isolates of V. breoganii sp. nov. and phylogenetic trees based on concatenated rpoA, atpA and 16S rRNA gene sequences are available with the online version of this paper.






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