Amphritea Atlantica Gen. Nov., Sp. Nov., a Gammaproteobacterium From the Logatchev Hydrothermal Vent Field

Int J Syst Evol Microbiol. 2008 Jan;58(Pt 1):34-9. doi: 10.1099/ijs.0.65234-0.


A novel Gram-negative, motile, aerobic rod-shaped bacterium was isolated from a Bathymodiolus sp. specimen collected from the Logatchev hydrothermal vent field at the Mid-Atlantic Ridge. The novel strain, M41(T), was catalase- and oxidase-positive and metabolised various carbohydrates and amino acids. It grew well in marine broth with an optimal growth temperature of 31 degrees C to 34 degrees C (range 4-40 degrees C) and salinity requirement of 3% (range 0.3-9%). The pH range for growth was pH 4.6 to 9.5, with an optimum at pH 8.0. The predominant fatty acids were C(16:1)omega7c, C(16:0) and C(18:1)omega7c. The DNA G+C content of strain M41(T) was 52.2 mol%. The 16S rRNA gene sequence was 94 % similar to that of the type strain of Oceanospirillum beijerinckii, the closest cultivated relative. Other related type strains were Oceanospirillum multiglobuliferum (93% gene sequence similarity), Neptunomonas naphthovorans (92%) and Marinobacterium jannaschii (92%). According to phylogenetic analysis and physiological characteristics, it is suggested that strain M41(T) represents a new genus and novel species for which the name Amphritea atlantica gen. nov., sp. nov. is proposed. The type strain is M41(T) (=DSM 18887(T)=LMG 24143(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Atlantic Ocean
  • Bacterial Typing Techniques
  • Base Composition
  • Bivalvia / microbiology*
  • DNA, Bacterial / analysis
  • Gammaproteobacteria / classification*
  • Gammaproteobacteria / genetics
  • Gammaproteobacteria / isolation & purification
  • Gammaproteobacteria / physiology
  • Genes, rRNA
  • Molecular Sequence Data
  • Phenotype
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Seawater / microbiology*
  • Sequence Analysis, DNA
  • Species Specificity
  • Temperature


  • DNA, Bacterial
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/AM156910