title: Reclassification of Aeromonas hydrophila subsp. dhakensis Huys et al. 2002 and Aeromonas aquariorum Martínez-Murcia et al. 2008 as Aeromonas dhakensis sp. nov. comb nov. and emendation of the species Aeromonas hydrophila.
abstract: Previous studies indicate that Aeromonas aquariorum and Aeromonas hydrophila subsp. dhakensis are the same taxon and suggest that they should be synonymized. Using a polyphasic approach, the phenotypic and phylogenetic relationship of A. aquariorum with the 3 defined A. hydrophila subspecies (i.e. dhakensis, hydrophila, ranae) was investigated. Phylogenetic trees derived from the 16S rRNA, rpoD or gyrB genes and a multilocus phylogenetic analysis (with the concatenated sequences of gyrB, rpoD, recA, dnaJ and gyrA) confirmed that both A. aquariorum and A. hydrophila subsp. dhakensis are a unique taxon, different from the other A. hydrophila subspecies, corroborating the phenotypic and DNA-DNA hybridization (DDH) results. A formal synonymization of A. aquariorum and A. hydrophila subsp. dhakensis and a reclassification of both as Aeromonas dhakensis sp. nov. comb nov. is therefore proposed.
authors.affiliation: Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina I Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus 43201, Spain.
authors.forename: Roxana
authors.initials: R
authors.lastname: Beaz-Hidalgo
authors.forename: Antonio
authors.initials: A
authors.lastname: Martínez-Murcia
authors.forename: Maria José
authors.initials: MJ
authors.lastname: Figueras
mesh_terms: D000333:Aeromonas / Q000145:classification* / Q000235:genetics; D016980:Aeromonas hydrophila / Q000145:classification; D001426:Bacterial Proteins / Q000235:genetics; D015373:Bacterial Typing Techniques; D020043:Genes, Essential; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D001426:Bacterial Proteins; D012336:RNA, Ribosomal, 16S