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The fine structure of Streptomyces coelicolor. I. The cytoplasmic membrane system

A M GLAUERT, D A HOPWOOD

    The Journal of Biophysical and Biochemical Cytology
    |June 1, 1960
    PubMed

    Insights

    Streptomyces coelicolor possesses extensive intracytoplasmic membranes, potentially serving functions similar to endoplasmic reticulum and mitochondria in higher cells, especially during spore development.

    Area of Science:

    • Microbiology
    • Cell Biology

    Background:

    • Streptomyces coelicolor is a model organism for studying bacterial development.
    • The intracellular structures of Streptomyces coelicolor have been a subject of research.

    Purpose of the Study:

    • To investigate the ultrastructure of Streptomyces coelicolor, focusing on its cytoplasmic membranes.
    • To understand the role of these membranes during different developmental stages.

    Main Methods:

    • Transmission electron microscopy was used to examine thin sections of Streptomyces coelicolor.
    • Cells were fixed using the Kellenberger, Ryter, and Séchaud method and embedded in methacrylate or araldite.

    Main Results:

    • Extensive intracytoplasmic membranes were observed in Streptomyces coelicolor hyphae at all developmental stages.
    • These membranes exhibited various configurations, including tubules, vesicles, and concentric whorls, particularly near cross-walls and in developing spores.
    • Membranous structures were also found within the nuclear material of spores and persisted in disintegrating hyphae.

    Conclusions:

    • The extensive intracytoplasmic membranes in Streptomyces coelicolor may perform functions analogous to the endoplasmic reticulum and/or mitochondria found in eukaryotic cells.
    • These membranes play a significant role in the development and structure of Streptomyces coelicolor, especially in spore formation.
    Keywords:
    STREPTOMYCES/anatomy and histology

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