| Species/Subspecies:
|
Streptococcus uberis |
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| Etymology:
|
Genus name: twisted (like a chain) coccus (coccus means a grain or a berry and referrs to any spherical microorganism)
Species epithet: of an udder |
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| Significance: | In Sweden, the proportion of S. uberis -induced acute clinical mastitis constituted 11% over the past 10 years.
[Very important]
|
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| Taxonomy:
|
| Phylum | Class | Order | Family | Genus |
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| Firmicutes | Bacilli | Lactobacillales | Streptococcaceae | Streptococcus |
|
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| Type Strain:
|
ATCC 19436 = CCUG 17930 och 27579 = NCTC 3858. |
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Macromorphology (smell):
  | Small (about 1 mm in diameter) transluscent ond circular colonies with smoth edge. Gives no hemolysis (referred to as gamma-hemolysis) on blodagar. Some strains may cause alpha-hemolysis. |
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| Micromorphology:
| Nonmotile cocci (less than 2 µm in diameter) in chains or pairs. The chains are often longer if the bacteria originate from a fluid culture. |
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Gram +/Gram -:
 | G+ |
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| Metabolism:
|
Facultatively anaerobic |
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| Catalase/Oxidase: | -/- |
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| Other Enzymes:
| DNase -, esculinase +, hippuricase +, coagulase - |
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| Biochemical Tests:
| Voges-Proskauer + |
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| Fermentation of carbohydrates:
|
| D-Glucose | Lactose | Maltose | L-rhamnose | Sucrose |
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| + | + | + | - | + | | L-Arabinos | Cellobios | D-mannitol | Salicin | Trehalose |
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| - | + | + | + | + | | Glycerol | Inulin | Raffinose | D-sorbitol | Starch |
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| - | + | - | + | v |
Other carbohydrates: amygdalin +, ribose + |
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Microbiological tests:
 | CAMP test negative. |
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| Spec. Char.:
| |
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Special Media:
 | SELMA and SELMA Plus plates are used for cultivation of milk samples when mastitis is suspected. |
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| Hosts:
| cattle |
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| Disease (Swedish): | mastit (kan vara svårbehandlad) |
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| Disease (English): | mastitis (can be difficult to treat) |
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| Clinical Picture:
| |
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| Genome Sequence:
|
| Acc-no | Strain | Size (bp) | Genome |
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| NC_012004 | 0140J | 1 852 352 | 1c + 0 |
|
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| 16S rRNA Seq.:
|
| Acc-no | Strain | Number of NT | Operon |
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| AB002526 | ATCC 19436T | 1 442 | 5 |
|
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| Taxonomy/phylogeny:
|
|
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| Comment: | Belongs to Lancefield's group NG (= non-groupable) streptcocci. |
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| Reference(s):
| No. 7 |
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