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Extremophiles

, Volume 7, Issue 1, pp 29–34 | Cite as

Salinisphaera shabanensis gen. nov., sp. nov., a novel, moderately halophilic bacterium from the brine–seawater interface of the Shaban Deep, Red Sea

  • André Antunes
  • Wolfgang Eder
  • Paula Fareleira
  • Helena Santos
  • Robert Huber
Original Paper

Abstract.

A novel, moderately halophilic bacterium was isolated from the brine–seawater interface of the Shaban Deep, northern Red Sea. A polyphasic approach was used for the taxonomic characterization of this isolate, with the phenotypic and phylogenetic data clearly showing the distinctiveness of this bacterium. Cells of isolate E1L3A were Gram-negative, monotrichous cocci that showed a remarkable physiological flexibility, as could be seen by the quite broad growth ranges for oxygen, temperature, NaCl, and, to a smaller degree, pH. In addition, it was able to grow from atmospheric pressure up to 15 MPa, making it a piezotolerant bacterium. Phylogenetically, strain E1L3A represents a new, deeply branching lineage within the γ-Proteobacteria, as determined by 16S rRNA gene sequence analysis. No close relatives are known so far, with sequence similarity to other cultivated members of the γ-Proteobacteria being lower than 88%. The creation of the new genus Salinisphaera and the new species Salinisphaera shabanensis (DSM 14853; JCM 11575) for this new and highly versatile microorganism is therefore proposed.

Brine Moderately halophilic Piezotolerant Red Sea Salinisphaera Salinisphaera shabanensis Shaban Deep 

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • André Antunes
    • 1
  • Wolfgang Eder
    • 1
  • Paula Fareleira
    • 2
  • Helena Santos
    • 2
  • Robert Huber
    • 1
  1. 1.Lehrstuhl für Mikrobiologie und Archaeenzentrum, Universität Regensburg, 93053 Regensburg, Germany
  2. 2.Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal

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