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Sulfur isotope ((34)S/(32)S) fractionation during reduction of dissolved sulfate was investigated with a growing batch culture of a thermophilic, gram-negative, sulfate-reducing bacterium (strain MT-96) at 60 degrees C. The completely oxidizing strain was isolated from geothermally heated sediments of a shallow-water hydrothermal vent in the Mediterranean(More)
A new autotrophic Thiomicrospira strain, MA-3, was isolated from the surface of a polymetal sulfide deposit collected at a Mid-Atlantic Ridge hydrothermal vent site. The DNA homology among three vent isolates, Thiomicrospira crunogena, Thiomicrospira sp. strain L-12, and Thiomicrospira sp. strain MA-3, was 99.3% or higher, grouping them as the same species,(More)
Recently, four Thiomicrospira strains were isolated from a coastal mud flat of the German Wadden Sea (T. Brinkhoff and G. Muyzer, Appl. Environ. Microbiol. 63:3789-3796, 1997). Here we describe the use of a polyphasic approach to investigate the functional role of these closely related bacteria. Microsensor measurements showed that there was oxygen(More)
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