The Actinomycetota are a diverse phylum of Gram-positive bacteria with high G+C content. They can be terrestrial or aquatic. They are of great economic importance to humans because agriculture and forests depend on their contributions to soil systems. In soil they help to decompose the organic matter of dead organisms so the molecules can be taken up anew by plants. While this role is also played by fungi, Actinomycetota are much smaller and likely do not occupy the same ecological niche. In this role the colonies often grow extensive mycelia, like a fungus would, and the name of an important order of the phylum, Actinomycetales, reflects that they were long believed to be fungi. Some soil actinomycetota live symbiotically with the plants whose roots pervade the soil, fixing nitrogen for the plants in exchange for access to some of the plant's saccharides. Other species, such as many members of the genus Mycobacterium, are important pathogens.
Streptomyces is the largest genus of Actinomycetota, and the type genus of the family Streptomycetaceae. Over 700 species of Streptomyces bacteria have been described. As with the other Actinomycetota, streptomycetes are gram-positive, and have very large 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. Different strains of the same species may colonize very diverse environments.
Streptomyces avermitilis is a species of bacteria in the genus Streptomyces. This bacterium was discovered by Satoshi Ōmura in Shizuoka Prefecture, Japan.
Streptomyces cinnamoneus is a bacterium species from the genus of Streptomyces which has been isolated from soil in Japan. Streptomyces cinnamoneus produces duramycin A, duramycin B, duramycin C, carbomycin, cinnomycin and fungichromin.
Streptomyces corchorusii is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces corchorusii produces butalactin.
Streptomyces diastatochromogenes is a bacterium species from the genus of Streptomyces. Streptomyces diastatochromogenes produces polyketomycin, concanamycin A, concanamycin B, concanamycin C, momofulvenone A, azdimycin, toyocamycin and oligomycins.
Streptomyces durhamensis is a bacterium species from the genus of Streptomyces which has been isolated from soil from a tomato plant. Streptomyces durhamensis produces durhamycin and filipin.
Streptomyces fumanus is a bacterium species from the genus of Streptomyces which has been isolated from alluvial soil. Streptomyces fumanus produces dioxapyrrolomycin, pyrrolomycin G, pyrrolomycin H, pyrrolomycin I, pyrrolomycin J and fumaquinone.
Streptomyces glomeratus is a bacterium species from the genus of Streptomyces. Streptomyces glomeratus produces beromycin and nogalamycin.
Streptomyces griseoruber is a bacterium species from the genus of Streptomyces which has been isolated from soil in Japan. Streptomyces griseoruber produces beromycin, actinomycin D, gombapyrone A, gombapyrone B, gombapyrone C, gombapyrone D and rhodomycins
Streptomyces halstedii is a bacterium species from the genus of Streptomyces which has been isolated from deeper soil layers. Streptomyces halstedii produces magnamycin B, vicenistatin deltamycin A2, deltamycin A3, bafilomycin B1 and bafilomycin C1. Streptomyces halstedii also produces complex antifungal antibiotics like oligomycins and the antibiotics anisomycin and sinefungin.
Streptomyces heliomycini is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces heliomycini produces heliomycin.
Streptomyces lomondensis is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces lomondensis produces the antibiotic lomofungin.
Streptomyces netropsis is a bacterium species from the genus of Streptomyces. Streptomyces netropsis produces the antibiotics netropsin and distamycin A and the antifungal polyene mycoheptin.
Streptomyces phaeofaciens is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces phaeofaciens produces phaeofacin.
Streptomyces sanglieri is a bacterium species from the genus of Streptomyces which has been isolated from soil from a hay meadow. Streptomyces sanglieri produces the antibiotic lactonamycin Z.
Streptomyces variegatus is a bacterium species from the genus of Streptomyces. Streptomyces variegatus produces prodigiosin.
Streptomyces violaceusniger is a bacterium species from the genus of Streptomyces. Streptomyces violaceusniger has antifungal activity. Streptomyces violaceusniger produces isoafricanol and spirofungin.
Lentzea flava is a bacterium from the genus Lentzea which has been isolated from soil. Lentzea flava produces madumycin.
