Morphology | Falcivibrio |
CELLULAR |
Staining | Young cultures stain Gram positive but older culutres stain Gram negative with Gram positive granules |
Morphology | slende, irregular curved rodseith clubbed or tapering ends arranged either singly or in pairs. The pairs show a sickle configuration |
Motility | motile by polar or subpolar flagella from the concave side of the cell |
Specialized structures | non sporing |
Division |
COLONIAL |
Solid surface | colonies are small(1 mm diameter) white and on bllod agar they exhibit beta hemolysis or greening of the agar |
Liquid |
Growth Parameters | Falcivibrio |
PHYSIOLOGICAL |
Tropism | chemoorganotropic |
Oxygen | anaerobic but the cells may become tolerant to 5% oxygen on culture |
pH | |
Temperature | optimum growth temperature is 37 oC |
Requirements | require nutrionally rich media, growth is stimulated by fumarate which is reduced to succinate |
Products | metabolism is fermentative, may porduce acid from glucose and other carbohydrates, indole negative,may reduce nitrates |
Enzymes | catalase negative, oxidase negative, |
Unique features |
ENVIRONMENTAL |
Habitat | isolated from the human vagina |
Lifestyle | |
Pathogenicity |
Distribution |
Genome | Falcivibrio |
G+C Mol % |
Reference | Falcivibrio |
First citation | Hammann et al 1984
Syst Appl Microbiol 5: 81-96 Hammann et al 1984 IJSB 34:355-357 |
The Prokaryotes | p |
Bergey's Determinative | p 577-578 |
References |