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Streptomyces is the largest genus of Actinomycetota, and the type genus of the family Streptomycetaceae. [3] Over 700 species of Streptomyces bacteria have been described. [4] [5] [6] As with the other Actinomycetota, streptomycetes are gram-positive, and have very large genomes with high GC content.
The following is a list of Streptomyces species, organized alphabetically by species name. [1] Names that have not been validated according to the Bacteriological Code are enclosed in "quotes". As of June 2021 [update] , there are 679 valid species of Streptomyces and an additional 121 provisional species. [ 1 ]
Streptomyces antibioticus was discovered by Selman Waksman and H. Boyd Woodruff, who named the bacterium Actinomyces antibioticus. [2] In their 1941 publication, Waksman and Woodruff describe their use of the "bacterial-agar plate method", in which they mixed a suspension of E. coli with washed agar containing 1.5% NaCl and 0.5% K 3 PO 4. [2]
Streptomyces scabiei is a streptomycete bacteria which means it forms a mycelium made of hyphae, a growth form more usually associated with fungi. The hyphae of Streptomyces, are much smaller than those of fungi (0.5–2.0 μm) and form a heavily branched mycelium.
The enzyme PBGD contains a four-amino-acid insertion which is present in all Streptomyces species and Kitasatospora setae, but not any other Actinomycetota. Similarly, a one- amino-acid insertion is present in a conserved region of adenylate kinase and is found in all Streptomyces species and K. setae, but is
Streptomyces griseus is a species of bacteria in the genus Streptomyces commonly found in soil. A few strains have been also reported from deep-sea sediments. It is a Gram-positive bacterium with high GC content .
Actinomycetes are Gram-positive bacteria that resemble fungi in structure with a complex branched network of cells called a mycelium.Isolates of Streptomyces lavendulae from different soils around the world vary morphologically and physiologically, with some strains producing straight aerial mycelium, while other isolates form spiral mycelium. [6]
Streptomyces isolates have yielded the majority of human, animal, and agricultural antibiotics, as well as a number of fundamental chemotherapy medicines.Streptomyces is the largest antibiotic-producing genus of Actinomycetota, producing chemotherapy, antibacterial, antifungal, antiparasitic drugs, and immunosuppressants. [1]