New species in the genus Francisella (Gammaproteobacteria; Francisellaceae); Francisella piscicida sp. nov. isolated from cod (Gadus morhua)

Karl F Ottem, Are Nylund, Egil Karlsbakk, Alice Friis-Møller, Bjørn Krossøy, Dag Knappskog

55 Citations (Scopus)

Abstract

A Francisella strain, GM2212, previously isolated from moribund farmed Atlantic cod (Gadus morhua) in Norway, is closely related to Francisella philomiragia among Francisella spp. according to its complete 16S rDNA, 16S-23S intergenic spacer, 23S rDNA, 23S-5S intergenic spacer, 5S rDNA, FopA, lipoprotein TUL4 (LpnA), malate dehydrogenase and hypothetical lipoprotein (LpnB) sequences. A comparison between GM2212 and the type strain of Francisella philomiragia were performed by DNA-DNA hybridization and fatty acid analysis. The DNA-DNA hybridization showed a 70% similarity. The fatty acid analysis showed only minor differences between the Francisella isolates. Due to the inconclusive result from the DNA-DNA hybridisation, major emphasis concerning the status of this isolate is made on previously published molecular, phenotypic and biochemical characters. All characteristics taken together support the establishment of GM2212 as a novel species, for which the name Francisella piscicida sp. nov. is proposed (=CNCM I-3511(T) = DSM 18777(T) = LMG registration number not yet available).
Original languageEnglish
JournalArchives of Microbiology
Volume188
Issue number5
Pages (from-to)547-50
Number of pages3
ISSN0302-8933
DOIs
Publication statusPublished - 2007

Keywords

  • Animals
  • Bacterial Typing Techniques
  • Fatty Acids
  • Fish Diseases
  • Francisella
  • Gadus morhua
  • Gram-Negative Bacterial Infections
  • Nucleic Acid Hybridization
  • RNA, Ribosomal, 16S
  • Sequence Analysis, DNA
  • Species Specificity

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