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A moderately thermophilic and high sulphide tolerant biotype of Marichromatium gracile, isolated from tidal sediments of the German Wadden Sea: Marichromatium gracile biotype thermosulphidiphilum

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Serrano,  W.
Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Amann,  R.
Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Fischer,  U.
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Citation

Serrano, W., Amann, R., & Fischer, U. (2009). A moderately thermophilic and high sulphide tolerant biotype of Marichromatium gracile, isolated from tidal sediments of the German Wadden Sea: Marichromatium gracile biotype thermosulphidiphilum. Systematic and Applied Microbiology, 32(1), 1-7.


Cite as: http://hdl.handle.net/21.11116/0000-0001-CC7E-D
Abstract
A purple sulfur bacterium, strain SW26, was isolated in pure culture from intertidal sediments from the Sylt-Rømø Basin, German Wadden Sea, sharing many properties with validated Marichromatium species, but differing significantly by possessing a plasmid, by tolerating up to 16mM sulfide, and up to 44 degrees C for growth. Strain SW26 has a DNA base composition of 68.3mol% G+C, a 16S rRNA gene sequence similarity of >99% to those of Marichromatium species, and shows the highest level of genomic relationship with Marichromatium gracile, despite its remarkably different phenotypic characters. Based upon high genomic similarity but different physiological properties of strain SW26 with respect to the type strain of M. gracile, a novel biotype, designated as M. gracile biotype thermosulfidiphilum is described.