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Department of Microbiology, SC-42, University of Washington, Seattle, Washington 98195
* Corresponding author. Phone: (206) 685-2163. Fax: (206) 543-8297. Electronic mail address:herwig{at}u.washington.edu.
ABSTRACT
Three heterotrophic bacterial strains were isolated from different locations in Puget Sound, Washington, by using biphenyl as the principal carbon source. These strains grow by using a limited number of organic compounds, including the aromatic hydrocarbons naphthalene, phenanthrene, anthracene, and toluene, as sole carbon sources. These aerobic, gram-negative rods are motile by means of single polar flagella. Their 16S rRNA sequences indicate that they are all members of the
subdivision of the Proteobacteria. Their closest known relatives are the genera Methylobacter and Methylomonas (genera of methane-oxidizing bacteria), uncultured sulfur-oxidizing symbionts found in marine invertebrates, and clone FL5 containing 16S ribosomal DNA amplified from an environmental source. However, the Puget Sound bacteria do not use methane or methanol as a carbon source and do not oxidize reduced sulfur compounds. Furthermore, a 16S rRNA base similarity comparison revealed that these bacteria are sufficiently different from other bacteria to justify establishment of a new genus. On the basis of the information summarized above, we describe a new genus and species, Cycloclasticus pugetii, for these bacteria; strain PS-1 is the type strain of C. pugetii.
Present address: 67th Evac Hospital, Unit 26610, P.O. Box 369, APO AE 09244. This article has been cited by other articles:
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