Novel observations of Thiobacterium, a sulfur-storing Gammaproteobacterium producing gelatinous mats

Grünke, Stefanie; Lichtschlag, Anna; Beer, Dirk de; Kuypers, Marcel; Lösekann-Behrens, Tina; Ramette, Alban Nicolas; Boetius, Antje (2010). Novel observations of Thiobacterium, a sulfur-storing Gammaproteobacterium producing gelatinous mats. The ISME journal, 4(8), pp. 1031-1043. Nature Publishing Group 10.1038/ismej.2010.23

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The genus Thiobacterium includes uncultivated rod-shaped microbes containing several spherical grains of elemental sulfur and forming conspicuous gelatinous mats. Owing to the fragility of mats and cells, their 16S ribosomal RNA genes have not been phylogenetically classified. This study examined the occurrence of Thiobacterium mats in three different sulfidic marine habitats: a submerged whale bone, deep-water seafloor and a submarine cave. All three mats contained massive amounts of Thiobacterium cells and were highly enriched in sulfur. Microsensor measurements and other biogeochemistry data suggest chemoautotrophic growth of Thiobacterium. Sulfide and oxygen microprofiles confirmed the dependence of Thiobacterium on hydrogen sulfide as energy source. Fluorescence in situ hybridization indicated that Thiobacterium spp. belong to the Gammaproteobacteria, a class that harbors many mat-forming sulfide-oxidizing bacteria. Further phylogenetic characterization of the mats led to the discovery of an unexpected microbial diversity associated with Thiobacterium.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute for Infectious Diseases
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine (ISPM)

UniBE Contributor:

Ramette, Alban Nicolas

Subjects:

500 Science > 570 Life sciences; biology
300 Social sciences, sociology & anthropology > 360 Social problems & social services
600 Technology > 610 Medicine & health

ISSN:

1751-7362

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Alban Nicolas Ramette

Date Deposited:

20 Mar 2017 11:16

Last Modified:

15 May 2019 16:03

Publisher DOI:

10.1038/ismej.2010.23

PubMed ID:

20220790

BORIS DOI:

10.7892/boris.91402

URI:

https://boris.unibe.ch/id/eprint/91402

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