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Published online ahead of print on 19 June 2009 as doi:ijs.0.003434-0
International Journal of Systematic and Evolutionary Microbiology 2009;59:1589.

Int J Syst Evol Microbiol (2009); DOI 10.1099/ijs.0.003434-0
© 2009 International Union of Microbiological Societies
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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 Jesus L. Romalde3,4

1 Universidad de Santiago. Spain;
2 BCCM/LMG Bacteria Collection. Belgium;
3 Universidad de Santiago de Compostela

4 E-mail: mpromald{at}usc.es

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






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