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Morphological changes in spherical E. coli induced by a DC electrical field.

H W Ellis

    Microbios
    |January 1, 1985
    PubMed
    Summary
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    Morphological changes in Escherichia coli subjected to direct current electrical fields.

    Microbios·1985
    See all related articles

    Electrical currents altered the shape of Escherichia coli C cells. Normally spherical bacteria became short rods or filaments when grown on a minimal medium with direct current applied.

    Area of Science:

    • Microbiology
    • Cell Biology
    • Biophysics

    Background:

    • Escherichia coli is a model organism with a typically spherical cell morphology.
    • Cellular responses to external physical stimuli are crucial for understanding microbial adaptation.
    • Electrical fields can influence biological systems, but their effect on bacterial morphology requires further investigation.

    Purpose of the Study:

    • To investigate the morphological changes in Escherichia coli C cells when exposed to electrical currents during growth.
    • To determine if direct current (DC) stimulation affects bacterial cell shape.

    Main Methods:

    • Culturing Escherichia coli C on a solid minimal salts medium.
    • Applying direct electrical currents (up to 30 mA DC) to the growth medium.

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  • Microscopic observation of cell morphology.

    • Main Results:

    • Spherical Escherichia coli C cells exhibited significant morphological alterations.
    • Cells developed into short rods or, in some cases, elongated filaments.
    • The observed changes were directly correlated with the application of electrical current.

    Conclusions:

    • Direct current stimulation can induce significant morphological changes in Escherichia coli C.
    • The findings suggest a potential mechanism for electrical field-mediated bacterial shape modulation.
    • Further research is warranted to explore the underlying cellular processes and potential applications.