Molecular and phenotypic characterization of Vibrio aestuarianus subsp. francensis subsp. nov., a pathogen of the oyster Crassostrea gigas

Systematic and Applied Microbiology
M GarnierJean-Louis Nicolas

Abstract

Eleven Vibrio isolates invading the hemolymph of live and moribund oysters (Crassostrea gigas) collected in the field and from a hatchery in France, were characterized by a polyphasic approach. Phylogenetic analysis of 16S rRNA, gyrB and toxR genes indicated high homogeneity between these strains and the Vibrio aestuarianus type strain (ATCC35048(T)), and confirmed previous 16S rRNA analysis. In contrast, DNA:DNA hybridization was from 61% to 100%, while phenotypic characters and virulence tests showed a large diversity between the strains. Nevertheless, several common characters allowed the isolates to be distinguished from the reference strain. On the basis of several distinct phenotypic characteristics, it is proposed to establish two subspecies within the V. aestuarianus spp. group, V. aestuarianus subsp. aestuarianus [D. Tison, R. Seidler, Vibrio aestuarianus: a new species from estuarine waters and shellfish, Int. J. Syst. Bacteriol. (1983) 699-702] and V. aestuarianus subsp. francensis for these French isolates. The characters that differentiate the new strains from V. aestuarianus subsp. aestuarianus(T) are virulence (positive for 63% of the isolates) and 12:0 fatty acid content. The colonies were smaller and uncoloured...Continue Reading

Associated Datasets

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Citations

Sep 3, 2010·Nihon saikingaku zasshi. Japanese journal of bacteriology·Tomoo Sawabe
Jun 1, 2014·Marine Drugs·Romain GastineauJean-Luc Mouget
Jul 27, 2015·Journal of Invertebrate Pathology·Valérie Barbosa SolomieuMarie-Agnès Travers
Jul 27, 2015·Journal of Invertebrate Pathology·Marie-Agnès TraversCarolyn S Friedman
Apr 15, 2014·Environmental Microbiology·Luigi VezzulliCarla Pruzzo
Jun 21, 2017·Marine Drugs·Carla ZannellaMassimiliano Galdiero
Feb 1, 2010·Environmental Microbiology Reports·Roxana Beaz-HidalgoMaria José Figueras
May 5, 2020·Environmental Microbiology·Delphine Destoumieux-GarzónLuigi Vezzulli
May 19, 2017·Frontiers in Microbiology·Javier DubertJesús L Romalde
Jun 20, 2020·The Science of the Total Environment·Antonia Concetta EliaMarino Prearo
Mar 20, 2012·Journal of Agricultural and Food Chemistry·Romain GastineauJean-Luc Mouget

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