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Journal Article

Dense populations of a giant sulfur bacterium in Namibian shelf sediments

MPS-Authors
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Schulz,  H. N.
Ecophysiology Group, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Brinkhoff,  Thorsten
Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Ferdelman,  Timothy G.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

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

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Citation

Schulz, H. N., Brinkhoff, T., Ferdelman, T. G., Marine, M., Teske, A., & Jørgensen, B. B. (1999). Dense populations of a giant sulfur bacterium in Namibian shelf sediments. Science, 284(5413), 493-495. doi:10.1126/science.284.5413.493.


Cite as: https://hdl.handle.net/21.11116/0000-0005-496B-2
Abstract
A previously unknown giant sulfur bacterium is abundant in sediments underlying the oxygen minimum zone of the Benguela Current upwelling system. The bacterium has a spherical cell that exceeds by up to 100-fold the biovolume of the largest known prokaryotes. On the basis of 16S ribosomal DNA sequence data, these bacteria are closely related to the marine filamentous sulfur bacteria Thioploca, abundant in the upwelling area off Chile and Peru. Similar to Thioploca, the giant bacteria oxidize sulfide with nitrate that is accumulated to less than or equal to 800 millimolar in a central vacuole.