|Prokaryote, Eubacteria Sheathed heterotrophs
|Herpetosiphon, Thioploca and Thiothrix nivea which also have sheaths are a lso included in Nonphotosynthetic, Nonfruiting Gliding Bacteria in the non fruiting section. The genus Lyngbya which is one of the cyanobacteria also has a sheath.
|Cells of variable size, usually small and disk-shaped, with a diameter 4-6 times the thickness of the cell. Cells are arranged as colourless, articulate and unbranched filaments of over 100 um in length.
|Filaments attached, forming grayish-white tufts. The free end may be of larger diameter than the base, but there is no tapering in either direction; the diameter varies between 3 and 6 um. Surrounded by a very thin, delicate, gelatinous, colourless sheath which is not encrusted with iron or manganese compounds. Cell walls are distinctive and of even thickness throughout the filament. Multiplication is by cross-septation and, in certain regions of the filament, by both cross-septation and longitudinal septation, forming Sarcina-like aggregates of small, nearly cubical propagation cells. Septating cells may be of greaterdiameter, causing localized swelling of the filament; in areas septating in both planes, the filaments may be up to 6 um indiameter.
|NOT OBTAINED IN PURE CULTURE
|G+C Mol %
|Engler, A.1883. Uber die Pilvegetation des Weissen oder Todten Grundes in der Kieler Bucht. Vierter Ber. d. Kommission z. wiss. Untersuchg. der Meere, Abt 1, 187-193
|p 2005 P. Hirsch