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Applied and Environmental Microbiology, October 1998, p. 3576-3583, Vol. 64, No. 10
Lehrstuhl für Mikrobiologie and
Archaeenzentrum,
Received 4 May 1998/Accepted 23 July 1998
A novel hyperthermophilic bacterium was isolated from pink
filamentous streamers (pink filaments) occurring in the upper outflow channel (temperature, 82 to 88°C) of Octopus Spring in Yellowstone National Park, Wyo. The gram-negative cells grew at low salinity at
temperatures up to 89°C in the neutral to alkaline pH range. Depending on the culture conditions, the organisms occurred as single
motile rods, as aggregates, or as long filaments that formed streamer-like cell masses. The novel isolate grew
chemolithoautotrophically with hydrogen, thiosulfate, and elemental
sulfur as electron donors and oxygen as the electron acceptor.
Alternatively, under aerobic conditions, formate and formamide served
as sole energy and carbon sources. The novel isolate had a 16S rRNA
sequence closely related to the 16S rRNA sequence obtained from
uncultivated pink filaments. It represents a new genus in the order
Aquificales, the type species of which we name
Thermocrinis ruber (type strain, OC 1/4 [= DSM 12173]).
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Thermocrinis ruber gen. nov., sp. nov.,
a Pink-Filament-Forming Hyperthermophilic Bacterium Isolated from
Yellowstone National Park
*
Corresponding author. Mailing address: Lehrstuhl
für Mikrobiologie, Universität Regensburg,
Universitätsstr. 31, 93053 Regensburg, Germany. Phone:
0941/943-3182. Fax: 0941/943-2403. E-mail:
Robert.Huber{at}Biologie.Uni-Regensburg.de.
Applied and Environmental Microbiology, October 1998, p. 3576-3583, Vol. 64, No. 10
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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