J.C. REVY, ISM / SCIENCE PHOTO LIBRARY J.C. REVY, ISM / SCIENCE PHOTO LIBRARY
Petri dish containing cultures of the soil bacterium Streptomcyes sp. . The bacterial colonies are illuminated with ultraviolet light and are seen fluorescing a bright yellow colour. Streptomyces species are natural producers of the antibiotic Streptomycin. A member of the Actinomycetes group, the bacterium shares many characteristics with the fungi. The bacteria grow in the soil as a branching network of filaments, known as a mycelium. They also produce an aerial mycelium, from the tips of which develop spore chains of indefinite length. When the spores are mature, they rupture & are dispersed on the wind.
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