Summary
An electron microscopic study of the Golgi apparatus in the giant amoeba, Pelomyxa illinoisensis, has been presented. Studies of normally feeding, dividing, starving, and refeeding amoebae were made. The major finding is that plasmalemma vesicles, formed via pinocytosis and phagocytosis, either flatten or invaginate and form the cisternae of the Golgi apparatus. Plasmalemma vesicles are also a source of new cisternae during the lifetime of a given Golgi apparatus. The cisternae migrate through the Golgi system, but before being released they either inflate, or segment into smaller vesicles. It is postulated that they later empty into the contractile vacuole and into certain other vacuoles. No evidence was found for the fusion of smooth Golgi vesicles or fringed vesicles of any kind with the plasmalemma.
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Dedicated to Professor Friedrich Wassermann with admiration and affection on the occasion of his eightieth birthday.
Work supported by U. S. Atomic Energy Commission. A part of the work was reported at the XVI International Congress of Zoology, Washington, D. C., in 1963.
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Daniels, E.W. Origin of the Golgi system in amoebae. Z.Zellforsch 64, 38–51 (1964). https://doi.org/10.1007/BF00339184
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DOI: https://doi.org/10.1007/BF00339184