Leptothrix cholodnii SP-6

An aerobic, sheath forming, filamentous bacteria, Leptothrix species oxidize Mn2+ and Fe2+ and are usually found in oligotrophic, slowly running, iron- and manganese-rich water. L.cholodnii SP-6 is the only Leptothrix species which retains it sheath under laboratory conditions. In rich medium cultures contain individual unsheathed cells, as well as filaments of cells inside sheaths encrusted with manganese or iron oxides. This organism produces rough colonies with filamentous edges on rich agar, although it occasionally contains sheathless variants that produce smooth colonies (adapted from PubMed 8573492). (EBI Integr8)