ELECTRON MICROSCOPE OBSERVATIONS OF FINE STRUCTURE OF MICROSPORUM GYPSEUM

[摘要] Electron microscope observations of M. gypseum showed the filamentous hyphae to have a cell wall consisting of a thin outer electron-dense area and an inner broader, fibrillar, electron-lucid area. The plasma membrane was a tri-laminar structure. Generally, the hyphae were binucleated. Nuclear membranes were double and displayed pores. Mitochondria were abundant and had extensive cristae. The endoplasmic reticulum appeared as slender tubules with a tendency to be best seen in the immediate vicinities of the nuclei and plasma membranes. Glycogen and lipids were constantly occurring inclusions. Vacuoles with tonoplasts were present. Single membrane bound vesicles were present which are, at least for the time being, being referred to as secretory vesicles rather than lysosomes.