| Cross Index | Peptococcus niger |
| SuperSet | Prokaryote, Eubacteria Gram Positive Cocci |
| Compare | aerobes: Deinobacter grandis Deinococcus,
Marinococcus, Micrococcus,
Planococcus , Salinicoccus roseus facultative anaerobes: Aerococcus viridans, Enterococcus, Gemella haemolysans, Lactococcus Leuconostoc, Melissococcus pluton, Pediococcus, Saccharococcus thermophilus, Staphylococcus, Stomatococcus mucilaginsos, Streptococcus, Trichococcus flocculiformis, Vagococcus anaerobes Coprococcus, Peptococcus niger , Peptostreptococcus, Ruminococcus, Sarcina Catalase positive:Deinococcus, Micrococcus, Planococcus, Staphylococcus,, Stomatococcus mucilaginsosus
|
| Contrast | Micrococcaceae are not a coherent group. Micrococcus is closely related to Arthrobacter , Planococcus is related to Bacilluss, while the radioresistant cocci called Deinococcus have atypical Gram positive cell walls. |
| Subset |
| Morphology | Peptococcus niger |
| CELLULAR |
| Staining | Gram-positive |
| Morphology | cocci in pairs or tetrads |
| Motility | |
| Specialized structures |
| Division |
| COLONIAL |
| Solid surface | Surface colonies on blood agar are black minute to 0.5 mm in diameter and non hemolytic. The colonies become grey when exposed to air |
| Liquid |
| Growth Parameters | Peptococcus niger |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | strict anaerobe |
| pH | |
| Temperature | |
| Requirements | |
| Products | metabolizes peptone and amino acids to combinations of C1 through C6 normal and branched chain fatty Hydrogen sul fide and ammonia are produced. but indole, urease, coagulase, esculin and starch tests are all negative |
| Enzymes | lack catalsae and cytochromes a weak catalase or pseudocatalase reaction is sometimes detected |
| Unique features | Carbohydrates are not fermented.. |
| ENVIRONMENTAL |
| Habitat | isolated from the human umbilicus, vaginal area and occasionally from clinical specimens |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Peptococcus niger |
| G+C Mol % | 50 |
| Reference | Peptococcus niger |
| First citation | Kluyver A.J. and C.B. van Niel (1936)Prospects for a natural classification of bacteria Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. II 123:683-684 |
| The Prokaryotes | P |
| Bergey's Systematatic | p 1082 L.V. Holdeman Moore, J.L. Johnson and W.E. C. Moore |
| Bergey's Determinative | p 530 |
| References |