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Int J Syst Evol Microbiol. 2004 Nov;54(Pt 6):2137-40.

Vibrio crassostreae sp. nov., isolated from the haemolymph of oysters (Crassostrea gigas).

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  • 1Laboratoire de Génétique et Pathologie, Institut français de recherche pour l'exploitation de la mer (Ifremer), 17390 La Tremblade, France.


Polyphasic analysis of five new Vibrio isolates originating from the haemolymph of diseased cultured oysters is described. The new isolates were closely related to Vibrio splendidus, having 98 % 16S rRNA gene sequence similarity. gyrB phylogenetic analysis, fluorescent amplified-fragment length polymorphism (FAFLP) fingerprinting and DNA-DNA hybridization experiments clearly showed that the new isolates form a tight genomic group that is different from the currently known Vibrio species. It is proposed to accommodate these isolates in a novel species, Vibrio crassostreae sp. nov. (type strain LGP 7(T)=LMG 22240(T)=CIP 108327(T)). Phenotypic and chemotaxonomic features that differentiate V. crassostreae from other known Vibrio species include arginine dihydrolase, utilization and fermentation of various carbon sources, beta-galactosidase activity, NO(2) production and the presence of the fatty acids 14 : 0 iso and 16 : 0 iso.

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