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The septal ontogeny, germination and electron microscopy of Microsporum gypseum macroaleurioconidia

H F Vismer, G H Findlay, A Eicker

    Mycopathologia
    |June 1, 1987
    PubMed

    Insights

    This study examines Microsporum gypseum macroaleurioconidia development. Findings reveal septal formation is stage-dependent, and the cell wall has dense encrustations impacting fixation.

    Area of Science:

    • Mycology
    • Dermatophytosis Research
    • Microbiology

    Background:

    • Microsporum gypseum is a common cause of dermatophytosis in humans and animals.
    • Macroaleurioconidia are key structures for fungal reproduction and infection.
    • Understanding their development is crucial for antifungal strategies.

    Purpose of the Study:

    • To investigate the septal ontogeny and germination of M. gypseum macroaleurioconidia.
    • To perform electron microscopy analysis of macroaleurioconidia.
    • To elucidate the structural characteristics influencing fixation.

    Main Methods:

    • Culturing M. gypseum strains from clinical cases.
    • Observing macroaleurioconidia septation and germination.
    • Utilizing electron microscopy with Tween 80 and negative pressure for fixation.

    Main Results:

    • Septal formation in macroaleurioconidia is dependent on developmental stage.
    • The order of septum formation is relatively consistent.
    • Electron microscopy revealed an electron-dense encrustation on the macroaleurioconidial surface, hindering fixative penetration.

    Conclusions:

    • Septal ontogeny in M. gypseum macroaleurioconidia follows a predictable pattern.
    • The macroaleurioconidial cell wall's structure presents challenges for electron microscopy fixation.
    • Further research may explore methods to overcome these fixation barriers.

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