Streptomyces

Abstract

Strep.to.my'ces. Gr. adj. streptos pliant, bent; Gr. masc. n. mukês fungus; N.L. masc. n. Streptomyces pliant or bent fungus. Actinobacteria / Actinobacteria / Streptomycetales / Streptomycetaceae / Streptomyces Aerobic, Gram‐stain‐positive, non‐acid‐fast bacteria that form extensively branched substrate and aerial mycelia . Chemoorganotrophic, having an oxidative type of metabolism. The vegetative hyphae (0.5–2.0 µm in diameter) rarely fragment. The aerial mycelium forms chains of three to many spores at maturity . Some species show short chains of spores on the substrate mycelium and others form sclerotia, pycnidial‐, sporangia‐, and synnemata‐like structures. The spores are nonmotile. Colonies are discrete and lichenoid, leathery, or butyrous . Often, colonies initially show a smooth surface, but later develop a weft of aerial mycelium that may appear floccose, granular, powdery, or velvety. Can produce a wide variety of pigments responsible for the color of the vegetative and aerial mycelia. Colored diffusible pigments may also be formed . Many strains are able to produce one or more antibiotic substances. DNA G + C content ( mol %): 66–78 ( T m ). Type species : Streptomyces albus (Rossi Doria 1891) Waksman and Henrici 1943, 339 AL .

Streptomyces tardus sp. nov.: A Slow-Growing Actinobacterium Producing Candicidin, Isolated From Sediments of the Trondheim Fjord

“…The whole-genome sequencing showed that the genome of strain P38-E01 T consists of 6,158,643 bp assembled in 10 scaffolds with an average coverage of 364-fold. The DNA %G + C content was 71.4%, which is in concordance with the genus characteristics ( Kämpfer, 2015 ). Further genomic information on strain P38-E01 T is listed in Table 3 .…”

“…The cell wall peptidoglycan contains LL-diaminopimelic acid. All described chemotaxonomic characteristics are typical for the genus Streptomyces ( Kämpfer, 2015 ) and confirmed that the analyzed strain does belongs to this genus.…”

“…Analysis of fatty acids showed that the predominant fatty acids of strain P38-E01 T were iso-C 16:0 (30.0%), C 16:0 (9.1%), and Summed Feature 3 (C 16:1 ω7c /C 16:1 ω6c ) (8.9%). The fatty acid profile revealed that strain P38-E01 T produces major amounts of iso- and anteiso-, branched fatty acids, which are in concordance with the characteristics of the genus Streptomyces ( Kämpfer, 2015 ). The closest relatives, S. daliensis DSM 42095 T , S. rimosus subsp.…”

Two-Component Systems of Streptomyces coelicolor: An Intricate Network to Be Unraveled

“…At the taxonomic level, the genus Streptomyces forms part of the Bacteria superkingdom, the Actinomycetota phylum, the Actinomycetia class, the Streptomycetales order, and the Streptomycetaceae family [ 5 , 6 ]. These microorganisms are characterized as filamentous multicellular bacteria that are Gram-positive, facultatively aerobic, mesophilic, neutrophilic, and chemoorganotrophic, with an oxidative metabolism [ 7 ]. Concerning their life cycle, these bacteria develop a vegetative mycelium and an aerial mycelium that forms chains of immobile reproductive spores [ 7 , 8 ].…”

Actinobacterias de la rizosfera del aguacate: actividad antagónica contra Colletotrichum gloeosporioides y Xanthomonas sp.

“…Petri plates were incubated at 28 °C from 7 to 14 days. The emerging actinobacterial type colonies with different morphological characteristics (Kämpfer, 2015) were selected. Spores and/or mycelia of the isolated actinobacteria were preserved with 25% glycerol at -80 °C (Shepherd et al, 2010).…”