Summary
The cell wall formation and its correlation with the plasma membrane and dictyosome were investigated by an electron microscope in the zygote cells ofClosterium ehrenbergii. During zygote maturation, six wall layers were formed outside the plasma membrane. Wall layer III was the thickest layer and consisted of microfibril bundles. Dictyosomes produced flat vesicles during formation of wall layer III. Hexagonal arrays of rosette particles appeared in the plasma membrane in this period, thus confirming the simultaneous occurrence of flat vesicles and hexagonal particle arrays in the formation of microfibril bundles even at different stages of the life cycle. Wall layer VI was second in thickness and consisted of single microfibrils. Neither flat vesicles nor hexagonal particle arrays were observed during formation of this layer.
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Noguchi, T., Ueda, K. Cell walls, plasma membranes, and dictyosomes during zygote maturation ofClosterium ehrenbergii . Protoplasma 128, 64–71 (1985). https://doi.org/10.1007/BF01273237
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DOI: https://doi.org/10.1007/BF01273237