Community size and metabolic rates of psychrophilic sulfate-reducing bacteria in Arctic marine sediments
Journal Article
·
· Applied and Environmental Microbiology
OSTI ID:20000245
The numbers of sulfate reducers in two Arctic sediments with in situ temperatures of 2.6 and {minus}1.7C were determined. Most-probable-number counts were higher at 10 C than at 20 C, indicating the predominance of a psychrophilic community. Mean specific sulfate reduction rates of 19 isolated psychrophiles were compared to corresponding rates of 9 marine, mesophilic sulfate-reducing bacteria. The results indicate that, as a physiological adaptation to the permanently cold Arctic environment, psychrophilic sulfate reducers have considerably higher specific metabolic rates than their mesophilic counterparts at similarly low temperatures.
- Research Organization:
- Max Planck Inst. for Marine Microbiology, Bremen (DE)
- OSTI ID:
- 20000245
- Journal Information:
- Applied and Environmental Microbiology, Vol. 65, Issue 9; Other Information: PBD: Sep 1999; ISSN 0099-2240
- Country of Publication:
- United States
- Language:
- English
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