Streptomyces
| Streptomyces | |
|---|---|
 |
|
| Slide culture of a Streptomyces species | |
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Actinobacteria |
| Class: | Actinobacteria |
| Order: | Actinomycetales |
| Family: | Streptomycetaceae |
| Genus: |
Streptomyces Waksman & Henrici 1943 |
| Diversity | |
| About 550 species | |
| Synonyms | |
|
Streptoverticillium |
|
Streptoverticillium
Streptomyces is the largest genus of Actinobacteria and the type genus of the family Streptomycetaceae. Over 500 species of Streptomyces bacteria have been described. As with the other Actinobacteria, streptomycetes are Gram-positive, and have genomes with high GC content. Found predominantly in soil and decaying vegetation, most streptomycetes produce spores, and are noted for their distinct "earthy" odor that results from production of a volatile metabolite, geosmin.
Streptomycetes are characterised by a complex secondary metabolism. They produce over two-thirds of the clinically useful antibiotics of natural origin (e.g., neomycin, cypemycin, grisemycin, bottromycins and chloramphenicol). The now uncommonly used streptomycin takes its name directly from Streptomyces. Streptomycetes are infrequent pathogens, though infections in humans, such as mycetoma, can be caused by S. somaliensis and S. sudanensis, and in plants can be caused by S. caviscabies, S. acidiscabies, S. turgidiscabies and S. scabies.
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