| Cross Index | Micrococcus |
| 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 | Archaea |
| Subset |
| Morphology | Micrococcus |
| CELLULAR |
| Staining | Gram-positive |
| Morphology | cocci in clusters and tetrads |
| Motility | non motile (M. agilis is motile), |
| Specialized structures | No capsules No spores |
| Division |
| COLONIAL |
| Solid surface | M. roseus produces canthazanthin, which is a distinctive pink pigment.. Isolate using P agar or P agar with 7% NaCl to suppress Bacillus. FTO agar supports the growth of Micrococcus and supresses the growth of Staphylococcus |
| Liquid |
| Growth Parameters | Micrococcus |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | strictly aerobic |
| pH | |
| Temperature | |
| Requirements | |
| Products | growth on furazolidine (FTO) agar Generally no anaerobic fermentation of glucose (M kristinae produces acid from glucose anaerobically) Acid without gas from glucose WHEN UTILIZED |
| Enzymes | Catalase positive. Oxidase positive |
| Unique features | They are resistent to
lysostaphin and contain hydrogenated menaquinones.
Glycine is absent and L-lysine is present in the
peptidoglycan Teichoic acid is absent from the cell wall.
All strains grow in the presence of 5% NaCl and many grow
in 10-15% NaCl, . M. luteus oxidizes carbon compounds such as glucose to carbon dioxide and water. Hence no acid is found and glucose and the fermentation tests appear negative. |
| ENVIRONMENTAL |
| Habitat | The primary natural habitat is the mammalian skin; the secondary habitat is meat and dairy products, soil and water. |
| Lifestyle | |
| Pathogenicity | They may be associated with human infections particularly in immunosuppressed patients |
| Distribution |
| Differential characteristics | M. luteus | M. roseus | M. varians |
| Pigment | yellow | red | yellow |
| glucose: acid | - | variable | - |
| fatfatty acid | + | variable | - |
| nitrate | - | + | + |
| lysozyme | sensitive | resistent | resistent |
| Novobiocin | variable | sensitive | resistent |
| G + C(moles%) of DNA | 7l-75 | 66-72 | 66-72 |
| Genome | Micrococcus |
| G+C Mol % | 64-75 |
| Reference | Micrococcus |
| First citation | Cohn, F. (1872) Untersuchunger uber Bakterien. Beitr. Biol. Pflanz 1875 1 (helft):127-224 |
| The Prokaryotes | p |
| Bergey's Systematatic | p 1004 M. Kocur |
| Bergey's Determinative | p 530 |
| References |