Skip to Main content Skip to Navigation
New interface
Journal articles

Phylogenetic study and identification of Vibrio splendidus-related strains based on gyrB gene sequences.

Abstract : Different strains related to Vibrio splendidus have been associated with infection of aquatic animals. An epidemiological study of V. splendidus strains associated with Crassostrea gigas mortalities demonstrated genetic diversity within this group and suggested its polyphyletic nature. Recently 4 species, V. lentus, V. chagasii, V. pomeroyi and V. kanaloae, phenotypically related to V. splendidus, have been described, although biochemical methods do not clearly discriminate species within this group. Here, we propose a polyphasic approach to investigate their taxonomic relationships. Phylogenetic analysis of V. splendidus-related strains was carried out using the nucleotide sequences of 16S ribosomal DNA (16S rDNA) and gyrase B subunit (gyrB) genes. Species delineation based on 16S rDNA-sequencing is limited because of divergence between cistrons, roughly equivalent to divergence between strains. Despite a high level of sequence similarity, strains were separated into 2 clades. In the phylogenetic tree constructed on the basis of gyrB gene sequences, strains were separated into 5 independent clusters containing V. splendidus, V. lentus, V. chagasii-type strains and a putative new genomic species. This phylogenetic grouping was almost congruent with that based on DNA–DNA hybridisation analysis. V. pomeroyi, V. kanaloae and V. tasmaniensis-type strains clustered together in a fifth clade. The gyrB gene-sequencing approach is discussed as an alternative for investigating the taxonomy of Vibrio species.
Complete list of metadata

Cited literature [36 references]  Display  Hide  Download
Contributor : Christophe Lambert Connect in order to contact the contributor
Submitted on : Friday, February 19, 2010 - 3:40:54 PM
Last modification on : Tuesday, October 18, 2022 - 4:19:07 AM
Long-term archiving on: : Friday, June 18, 2010 - 6:19:49 PM


Files produced by the author(s)




Frédérique Le Roux, Mélanie Gay, Christophe Lambert, Jean-Louis Nicolas, Manolo Gouy, et al.. Phylogenetic study and identification of Vibrio splendidus-related strains based on gyrB gene sequences.. Diseases of Aquatic Organisms, 2004, 58 (2-3), pp.143-150. ⟨10.3354/dao058143⟩. ⟨hal-00458183⟩



Record views


Files downloads