| Pyrobaculum |
| SuperSet | Prokaryote, Archaea Extremely Thermophilic Archaeobacteria |
| Compare | Acidianus Desulfurococcus, Desulfurolobus ambivalens Hyperthermus butylicus , Metallosphaera sedula Pyrobaculum Pyrococcus, Pyrodictium Staphylothermus marinus Sulfolobus Thermococcus Thermodiscus maritimus Thermofilum, Thermoproteus |
| Contrast | Archaea
|
| Subset |
| Morphology | Pyrobaculum |
| CELLULAR |
| Staining | Gram negative |
| Morphology | rod shaped cells with rectanular ends that occur singly and in V, X and raft shaped aggregates |
| Motility | peritrichous or bipolar polytrichous flagells |
| Specialized structures | terminal spheres appear during the exponential phase of growth |
| Division |
| COLONIAL |
| Solid surface | form grey or greenish black colonies |
| Liquid |
| Growth Parameters | Pyrobaculum |
| PHYSIOLOGICAL |
| Tropism | facultative chemolithoautrotrophs or strict heterotrophs |
| Oxygen | strict anaerobies |
| pH | ph 5-7 |
| Temperature | 74-103 oC optimum is 100 oC |
| Requires | salt range 0- 0.8% NaCl. elemental sulfur is strcitly required as the electron acceptor for autotrophic growth |
| Products | |
| Enzymes | |
| Unique features | molecular hydrogen or complex organic
substances are used as electron donors Lithoautotrophic growth occurs on H2, CO2 and elemental sulfur by H2/S autotrophy |
| ENVIRONMENTAL |
| Habitat | Pyrobaculum lives in boiling neutral or alkaline solfataric waters in the Azores, Iceland and Italy |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Pyrobaculum |
| G+C Mol % |
| Reference | Pyrobaculum |
| First citation | Huber et al 1987 Arch. Microbiol 149: 95-101 |
| The Prokaryotes | p |
| Bergey's Determinative | p 750 |
| References |