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Applied and Environmental Microbiology, August 2000, p. 3125-3133, Vol. 66, No. 8
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Diversity of Thiosulfate-Oxidizing Bacteria from Marine Sediments and Hydrothermal Vents†

A. Teske,1,* T. Brinkhoff,2 G. Muyzer,3 D. P. Moser,4 J. Rethmeier,5 and H. W. Jannasch1

Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 025431; Institut für Chemie und Biologie des Meeres (ICBM), Universität Oldenburg, 26111 Oldenburg, Germany2; Netherlands Institute for Sea Research (NIOZ), 1790 AB den Burg, The Netherlands3; Department of Geosciences, Princeton University, Princeton, New Jersey 085444; and FB 2 und UFT, Abt. Marine Mikrobiologie, Universität Bremen, D-29359 Bremen, Germany5

Received 9 February 2000/Accepted 24 April 2000

Species diversity, phylogenetic affiliations, and environmental occurrence patterns of thiosulfate-oxidizing marine bacteria were investigated by using new isolates from serially diluted continental slope and deep-sea abyssal plain sediments collected off the coast of New England and strains cultured previously from Galapagos hydrothermal vent samples. The most frequently obtained new isolates, mostly from 103- and 104-fold dilutions of the continental slope sediment, oxidized thiosulfate to sulfate and fell into a distinct phylogenetic cluster of marine alpha-Proteobacteria. Phylogenetically and physiologically, these sediment strains resembled the sulfate-producing thiosulfate oxidizers from the Galapagos hydrothermal vents while showing habitat-related differences in growth temperature, rate and extent of thiosulfate utilization, and carbon substrate patterns. The abyssal deep-sea sediments yielded predominantly base-producing thiosulfate-oxidizing isolates related to Antarctic marine Psychroflexus species and other cold-water marine strains of the Cytophaga-Flavobacterium-Bacteroides phylum, in addition to gamma-proteobacterial isolates of the genera Pseudoalteromonas and Halomonas-Deleya. Bacterial thiosulfate oxidation is found in a wide phylogenetic spectrum of Flavobacteria and Proteobacteria.

* Corresponding author. Mailing address: Woods Hole Oceanographic Institution, Biology Department/Redfield Laboratory, Woods Hole, MA 02543. Phone: (508) 289-2305. Fax: (508) 457-2134. E-mail: ateske{at}whoi.edu.

dagger Contribution no. 10187 of the Woods Hole Oceanographic Institution.

Applied and Environmental Microbiology, August 2000, p. 3125-3133, Vol. 66, No. 8
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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