Summary
The influence of a 48 hour starvation on the fine structure of Saccharomyces cerevisiae was investigated. The most prominent structural changes were observed when cells from an exponentially growing culture were treated: Besides some already known particularities, the most conspicious features were more or less complex compartments and myelin-like bodies. Their localization and fine structure show some parallels to mesosomes, lomasomes as well as vacuoles.
The development of the various kinds of compartments is regarded as a consequence of a reversible loss of differentiation produced by the extreme starvation. Their physiological function is discussed in relation to the activated degradation processes, necessary for survival.
Zusammenfassung
Der Einfluß einer 48stündigen Aushungerung in Wasser auf die Feinstrucktur von Saccharomyces cerevisiae wird untersucht. Zellen aus der exponentiellen Vermehrungsphase zeigten danach die auffälligsten Veränderungen: Neben Strukturbesonderheiten bereits bekannter Art fallen mehr oder weniger komplexe Kompartimente und myelinartige Gebilde auf, die in ihrer Lokalisierung und Feinstruktur Parallelen zu Mesosomen, Lomasomen sowie Vacuolen aufweisen. Ihre Entstehung wird als Folge einer durch die extreme Aushungerung bedingten, reversiblen Entdifferenzierung gedeutet. Ihre Funktion wird im Zusammenhang mit der zum Überleben notwendigen Aktivierung von Abbauprozessen diskutiert.
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Hinkelmann, W., Kraepelin, G. Kompartimentbildungen in Hungerzellen von Saccharomyces cerevisiae . Archiv. Mikrobiol. 74, 258–272 (1970). https://doi.org/10.1007/BF00408886
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DOI: https://doi.org/10.1007/BF00408886