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Chromatiales

Order of bacteria

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Through Gram-negative bacteria

Classification

Some members of the order comprise the primarily anaerobic and phototrophic purple sulfur bacteria (PSBs), found specifically within the families Chromatiaceae and Ectothiorhodospiraceae. Other members, like those in the families Halothiobacillaceae and Thioalkalibacteraceae, are aerobic and chemolithoautotrophic.

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