| Cross Index | Gram negative Curved Motile Aerobes |
| SuperSet | Prokaryote, Eubacteria |
| Compare | |
| Contrast | Archaea, |
| Subset | Alteromonas, Aquaspirillum, Azospirillum , Bdellovibrio, Campylobacter, Cellvibrio
mixtus
, Halovibrio
variabilis
,
Helicobacter,
Herbaspirillum
seropedicae,
Marinomonas, Micavibrio
admirandus Oceanospirillum, Spirillum, "Sporospirillum", Vampirovibrio chlorellavorus ,Wolinella |
| Morphology | Gram negative Curved Motile Aerobes |
| CELLULAR |
| Staining | Gram-negative; Azospirillum may be Gram-variable. |
| Morphology | Helical or vibrioid cells, having from less than one complete helical turn to many turns |
| Motility | Motile in broth cultures by polar flagella. Swim in straight lines with a characteristic corkscrew-like motion. |
| Specialized structures | Many species form intracellular poly-B-hydroxybutyrate. Many possess a "polar membrane" attached to the inside of the cytoplasmic membrane by barlike links; this generally occurs underlying the region of flagellar insertion. Many of the organisms become converted into thin-walled "coccoid bodies" in old cultures. Azospirillum produces enlarged, encapsulated forms that may superficially resemble cysts. |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Gram negative Curved Motile Aerobes |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | Aerobic or microaerophilic, having a respiratory type of metabolism with oxygen as the normal electron acceptor. Growth under anaerobic conditions is absent or very poor, or may occur only with special electron acceptors such as nitrate or fumarate. A few species can acidify certain sugar media under anaerobic conditions, but they grow very poorly and much prefer aerobic conditions. |
| pH | |
| Temperature | |
| Requires | Chemoorganotrophic; however, some species may grow autotrophically in a mixture of H2 + CO2 + O2. |
| Produces | Most members of the group are incapable of catabolizingcarbohydrates, but some can oxidize a limited variety. Some can fix N2 under microaerobic conditions.Typically oxidase-positive. Indole is not produced. |
| Enzymes | |
| Unique features |
| ENVIRONMENTAL |
| Habitat | Occur in soil, fresh
water or marine environments, within plant roots, or in
the reproductive Organs, intestinal tract and oral cavity of man and animals. |
| Lifestyle | Some are predatory on other microorganisms |
| Pathogenicity |
| Distribution |
| Genome | Gram negative Curved Motile Aerobes |
| G+C Mol % | 30 - 70 |
| Reference | Gram negative Curved Motile Aerobes |
| The Prokaryotes | p |
| Bergey's Systematatic | p 71- 124 |
| Bergey's Determinative | p 39-64 |
| References |