Chromatium is a genus of photoautotrophic Gram-negative bacteria which are found in water.Madigan M, Martinko J (editors) (2025). 032173551X, Pearson Education. 032173551X
The cells are straight rod-shaped or slightly curved. They belong to the purple sulfur bacteria and oxidize sulfide to produce sulfur which is deposited in intracellular granules of the cytoplasm.[George M. Garrity: Bergey's Manual of Systematic Bacteriology. 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria]
External links
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Chromatium J.P. Euzéby: List of Prokaryotic names with Standing in Nomenclature