title: Aeromonas aquatica sp. nov., Aeromonas finlandiensis sp. nov. and Aeromonas lacus sp. nov. isolated from Finnish waters associated with cyanobacterial blooms.
abstract: Three groups of Aeromonas strains isolated from Finland lakes experiencing cyanobacterial blooms could not be assigned to any known species of this genus on the basis of 16S rRNA and rpoD gene sequences. The Multilocus Phylogenetic Analysis (MLPA) of the concatenated sequence of seven genes (gyrB, rpoD, recA, dnaJ, gyrA, dnaX and atpD; 4093bp) showed that the three groups of strains did not cluster with any known Aeromonas spp. and formed three independent lineages. This was confirmed by performing the analysis with their closest relatives using 15 genes (the latter 7 and cpn60, dnaK, gltA, mdh, radA, rpoB, tsf, zipA; 8751bp). Furthermore, ANI results between the genomes of the type strains of the three potential new species and those of their close relatives were all <96% which is the previously proposed cutoff value for differentiating species within this genus. The in silico DDH values of the three type strains of the new species also showed a similarity<70% with the most closely related species indicating they belong to different taxa. The three groups of strains could be differentiated from each other and from other known Aeromonas species on the basis of several phenotypic characters. This polyphasic study revealed that the 3 groups of strains represent 3 novel Aeromonas species for which the names Aeromonas aquatica sp. nov. (type strain AE235T=CECT 8025T=LMG 26712T), Aeromonas finlandiensis sp. nov. (type strain 4287DT=CECT 8028T=LMG 26709T) and Aeromonas lacus sp. nov. (type strain AE122T=CECT 8024T=LMG 26710T) are proposed.
authors: Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain.
authors: R
authors: R
authors: Beaz-Hidalgo
authors: Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain.
authors: F
authors: F
authors: Latif-Eugenín
authors: Department of Biological Sciences, Auburn University, Auburn, AL, United States.
authors: M J
authors: MJ
authors: Hossain
authors: Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland.
authors: K
authors: K
authors: Berg
authors: Finnish Environment Institute, Ecosystem Change, Helsinki, Finland.
authors: R M
authors: RM
authors: Niemi
authors: Ministry of Social Affairs and Health, Department of Promotion of Welfare and Health, Helsinki, Finland.
authors: J
authors: J
authors: Rapala
authors: Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland.
authors: C
authors: C
authors: Lyra
authors: Department of Biological Sciences, Auburn University, Auburn, AL, United States.
authors: M R
authors: MR
authors: Liles
authors: Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain. Electronic address: mariajose.figueras@urv.cat.
authors: M J
authors: MJ
authors: Figueras
mesh_terms: D000333:Aeromonas / Q000145:classification* / Q000302:isolation & purification*; D016000:Cluster Analysis; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D012321:DNA-Directed RNA Polymerases; D005387:Finland; D005798:Genes, Bacterial / Q000235:genetics; D060106:Lakes / Q000382:microbiology*; D008969:Molecular Sequence Data; D058885:Multilocus Sequence Typing; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D012321:DNA-Directed RNA Polymerases; C105078:RNA polymerase beta subunit
keywords: ANI; Aeromonas; New taxa; Polyphasic; Water