| Cross Index | Thiocapsa |
| SuperSet | Prokaryote, Eubacteria Anoxygenic Phototrophic Bacteria |
| Compare | Purple Bacteria
Green Bacteria
Anaerobic chemotropic Erythrobacter longus, |
| Contrast | Oxygenic Phototrophic Bacteria Archaea |
| Subset |
| Morphology | Thiocapsa |
| CELLULAR |
| Staining | Gram-negative. |
| Morphology | Cells spherical to slightly ovoid, 1.2-3 um in diameter, Tetrads may be formed as a result of consecutive divisions in two perpendicular planes. Under unfavourable culture conditions and in many natural habitats, cells may grow in irregular clumps surrounded by slime.; |
| Motility | nonmotile |
| Specialized structures | . Contain internal
photosynthetic membrane systems of vesicular or tubular
type in which the photosynthetic pigments
bacterio-chlorophyll a or b and carotenoids are located.
Do not contain gas vacuoles. elemental sulfur transiently stored inside the cells |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Thiocapsa |
| PHYSIOLOGICAL |
| Tropism | Phototrophic under anaerobic conditions; may be chemoautotrophic or mixotrophic under microaerobic to aerobic conditions in the dark. Capable of photolithoautotrophic growth with sulfide or sulfur as electron donor |
| Oxygen | |
| pH | |
| Temperature | |
| Requirements | |
| Products | the final oxidation product is sulfate |
| Enzymes | |
| Unique features |
| ENVIRONMENTAL |
| Habitat | |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Thiocapsa |
| G+C Mol % | 63.3-69.9 (Bd) |
| Reference | Thiocapsa |
| First citation | Winogradsky, S. 1888. Uber
Eisenbakterien. Bot Z 42: 261-270 Winogradsky, S. 1888. Beitrage zur Morphologie und Physiologie der bacterien. Heft 1. Zur Morphologie unde Physiologie der Schwefelbakterien. Arthur Felix, Leipzig pp 1-120 |
| The Prokaryotes | |
| Bergey's Systematatic | p 1645 Norbert Pfennig |
| Bergey's Determinative | p 354 |
| References |