Bacterial Sulfate Reduction Above 100°C in Deep-Sea Hydrothermal Vent Sediments

Jørgensen, Bo Barker; Isaksen, M.F.; Jannasch, H.W.

doi:10.1126/science.258.5089.1756

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Bacterial Sulfate Reduction Above 100°C in Deep-Sea Hydrothermal Vent Sediments

MPS-Authors

/persons/resource/persons210489

Jørgensen, Bo Barker
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Jørgensen, B. B., Isaksen, M., & Jannasch, H. (1992). Bacterial Sulfate Reduction Above 100°C in Deep-Sea Hydrothermal Vent Sediments. Science, 258(5089), 1756-1757. doi:10.1126/science.258.5089.1756.

Cite as: https://hdl.handle.net/21.11116/0000-0004-8C41-5

Abstract

The currently known upper temperature limit for growth of organisms, shared by a number of archaebacteria, is 110-degrees-C. However, among the sulfate-reducing bacteria, growth temperatures of greater than 100-degrees-C have not been found. A search for high-temperature activity of sulfate-reducing bacteria was done in hot deep-sea sediments at the hydrothermal vents of the Guaymas Basin tectonic spreading center in the Gulf of California. Radiotracer studies revealed that sulfate reduction can occur at temperatures up to 110-degrees-C, with an optimum rate at 103-degrees to 106-degrees-C. This observation expands the upper temperature limit of this process in deep-ocean sediments by 20-degrees-C and indicates the existence of an unknown groUp of hyperthermophilic bacteria with a potential importance for the biogeochemistry of sulfur above 100-degrees-C.