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Journal of Bacteriology, August 1999, p. 4517-4525, Vol. 181, No. 15
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Citromicrobium bathyomarinum, a Novel Aerobic Bacterium Isolated from Deep-Sea Hydrothermal Vent Plume Waters That Contains Photosynthetic Pigment-Protein Complexes

Vladimir V. Yurkov,1,* Steven Krieger,1 Erko Stackebrandt,2 and J. Thomas Beatty1

Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada,1 and German Collection of Microorganisms and Cell Cultures, D-38124 Braunschweig, Germany2

Received 27 January 1999/Accepted 25 May 1999

We have taxonomically and phylogenetically characterized a new aerobic bacterial strain (JF-1) that contains photosynthetic pigment-protein complexes and which was recently isolated from black smoker plume waters of the Juan de Fuca Ridge. Strain JF-1 is a gram-negative, yellow-pigmented, motile bacterium that is salt-, pH-, and thermotolerant. These properties are consistent with an oligotrophic adaptation to varied environmental conditions thought to exist around deep-sea hydrothermal vents. The analysis of 16S rDNA sequences revealed that strain JF-1 forms a separate phylogenetic branch between the genus Erythromonas and the Erythromicrobium-Porphyrobacter-Erythrobacter cluster within the alpha  subclass of the Proteobacteria. The taxonomic name Citromicrobium bathyomarinum (gen. nov., sp. nov.) is proposed for strain JF-1.

* Corresponding author. Present address: Department of Microbiology, The University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada. Phone: (204) 474-6303. Fax: (204) 474-7603. E-mail: vyurkov{at}cc.umanitoba.ca.

Journal of Bacteriology, August 1999, p. 4517-4525, Vol. 181, No. 15
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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