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.
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
subclass of the Proteobacteria. The
taxonomic name Citromicrobium bathyomarinum (gen. nov., sp.
nov.) is proposed for strain JF-1.
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