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  A novel, mat-forming Thiomargarita population associated with a sulfidic fluid flow from a deep-sea mud volcano

Girnth, A. C., Grünke, S., Lichtschlag, A., Felden, J., Knittel, K., Wenzhöfer, F., et al. (2011). A novel, mat-forming Thiomargarita population associated with a sulfidic fluid flow from a deep-sea mud volcano. Environmental Microbiology, 13(2), 495-505.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-C9F7-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-9F6E-C
Genre: Journal Article

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 Creators:
Girnth, A. C.1, Author              
Grünke, S.1, Author              
Lichtschlag, A.1, Author              
Felden, J.1, Author              
Knittel, K.2, Author              
Wenzhöfer, F.1, Author              
de Beer, D.3, Author              
Boetius, A.1, Author              
Affiliations:
1HGF MPG Joint Research Group for Deep Sea Ecology & Technology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481702              
2Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481696              
3Permanent Research Group Microsensor, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481711              

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 Abstract: A mat-forming population of the giant sulfur bacterium Thiomargarita was discovered at the flank of the mud volcano Amon on the Nile Deep Sea Fan in the Eastern Mediterranean Sea. All cells were of a spherical and vacuolated phenotype and internally stored globules of elemental sulfur. With a diameter of 24-65 µm, Thiomargarita cells from the Eastern Mediterranean were substantially smaller than cells of previously described populations. A 16S rRNA gene fragment was amplified and could be assigned to the Thiomargarita-resembling cells by fluorescence in situ hybridization. This sequence is monophyletic with published Thiomargarita sequences but sequence similarities are only about 94%, indicating a distinct diversification. In the investigated habitat, highly dynamic conditions favour Thiomargarita species over other sulfur-oxidizing bacteria. In contrast to Thiomargarita namibiensis populations, which rely on periodic resuspension from sulfidic sediment into the oxygenated water column, Thiomargarita cells at the Amon mud volcano seem to remain stationary at the sediment surface while environmental conditions change around them due to periodic brine flow.

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Language(s): eng - English
 Dates: 2011-02
 Publication Status: Published in print
 Pages: 11
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 574033
ISI: 000286835900018
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Title: Environmental Microbiology
  Other : Environmental Microbiology and Environmental Microbiology Reports
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Science
Pages: - Volume / Issue: 13 (2) Sequence Number: - Start / End Page: 495 - 505 Identifier: ISSN: 1462-2912
CoNE: https://pure.mpg.de/cone/journals/resource/959328105031