| Cross Index | Siderocapsa |
| SuperSet | Prokaryote, Eubacteria Aerobic Chemolithotrophic Bacteria |
| Compare | Nitrifying bacteria:
Sulfur Oxidizing Acidiphilium Macromonas, Thermothrix thiopara Thiobacillus, Thiobacterium, Thiodendron latens, Thiomicrospira, Thiosphaera, Thiospira, Thiovulum majus Hydrogen Bacteria: Hydrogenbacter thermophilus Iron & Manganese bacteria: Aquaspirillum , Bilophococcus, Gallionella ferrunginea, Leptospirillum, Metallogenium , Naumanniella, Ochrobium tectum, Sulfobacillus thermosulfidooxidans, Siderocapsa, Siderococcus limoniticus, |
| Contrast | Archaea Arthrobacter |
| Subset |
| Morphology | Siderocapsa |
| CELLULAR |
| Staining | |
| Morphology | One or several spherical to ovoid cells surrounded by a common capsule partially or completely encrusted with oxides of iron or manganese |
| Motility | . |
| Specialized structures | Capsular material appears
to precede the deposition of iron or manganese. Deposits
often ring-shaped (and not completely spherical) when the
cells live attached to surfaces. The more or less loose
capsular material may be rust-brown, owing to the
presence of iron oxides, or greenish to olive-coloured,
owing to the presence of manganese oxides "Siderocapsa" coenobia may be visualized under the electron microscope on film-covered electron microscopic grids exposed in the natural environment (Hirsch and Pankratz 1970). The differentiation of "Siderocapsa" species is presently based on morphological characteristics as outlined by Skuja (1974). Cell morphology is often obscured due to iron or manganese encrustation which can be removed by sample pretreatment with dilute solutions of either oxalic acid, hydrochloric acid or EDTA. |
| Division |
| COLONIAL |
| Solid surface | Some species bear resemblance to Arthrobacter species when cultivated in the laboratory but attain the morphology described above when reintroduced into the normal aquatic habitat (Schmidt 1984). Accordingly, Dubinina and Zhdanov (1975) suggested that "S. eusphaera" be recognized as a new species of Arthrobacter (A. siderocapsulatus), but this revision needs to be substantiated by further work with pure cultures. |
| Liquid | Successful enrichment cultures were based on amending the sample with FeCo3 or MnCO3 (1 mg/l each) or on using liquid or solid media which additionally contained a low concentration of complex organic carbon substrates such as yeast extract, beef extract or peptone (Hanert 1981). |
| Growth Parameters | Siderocapsa |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | |
| pH | |
| Temperature | |
| Requirements | |
| Products | |
| Enzymes | |
| Unique features |
| ENVIRONMENTAL |
| Habitat | Common in freshwater habitats on surfaces or planktonic |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Siderocapsa |
| G+C Mol % |
| Reference | Siderocapsa |
| First citation | Molisch,H. 1909. Siderocapsa treubii Molisch eine neue, weit verbretete Eisenbakterie. Ann Jard. Bot. Buitenzorg. Ser. 2. Suppl 3: 29-34 |
| The Prokaryotes | |
| Bergey's Systematatic | p 1875 P. Hirsch, G.A. Zavarzin and O. H. Tuovinen |
| Bergey's Determinative | p 445 |
| References |