Summary
During sporogenesis the ER changes typically. It is increased by 50–100 times compared by the vegetative hyphae and is reduced again within a few hours while the zoospores become fully developed. In the same way growth and differentiation of the dictyosomes and the nuclear envelope takes place which are in contact with one another and with the ER. The ER, when developed maximally, connects all organells of the cell. The mitochondria then are tightly enclosed by porous ER-cisterns.
Zusammenfassung
Das sich während der Sporogenese typisch verändernde ER wird um das 50–100 fache im Vergleich zur vegetativen Hyphe vermehrt und bis zur Reifung der Zoosporen innerhalb weniger Stunden wieder abgebaut. Gleichsinnig verlaufen das Waschstum und die Differenzierung der Dictyosomen und der Kernhülle, die untereinander und mit dem ER in engstem Kontakt stehen. Das maximal entwickelte ER verbindet alle Zellorganelle miteinander. Die Mitochondrien sind dabei von porösen ER-Zisternen eng umschlossen.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literatur
Avers, G.: Distribution of cytochrom c-peroxidase activity in wild-type and petite cells of bakers yeast grown aerobically and anaerobically. J. Bact.14, 1225–1235 (1967).
Behnke, O., Moe, H.: An electron microscope study of mature and differentiating Paneth cells in the rat, especially of their endoplasmic reticulum and lysosomes. J. Cell Biol.22, 633–652 (1964).
Bouck, G.: Fine structure and organell associations on brown algae. J. Cell. Biol.26, 523–537 (1965).
Brown, C., Hough, I.: Protein-disulfid-reduction in yeast. Nature (Lond.)211, 201 (1966).
Ernster, L., Siekevitz, P., Palade, G.: Enzyme-structure relationships in the endoplasmic reticulum of the rat liver. J. Cell Biol.15, 541–562 (1962).
Falk, H., Kleinig, Y.: Feinbau der Carotinoide von Tribonema. Arch. Mikrobiol.61, 347–362 (1968).
Grove, N., Bracker, C., Morré, D.: An ultrastructural basis for hyphal tip growth inPythium ultimum. Amer. J. Bot.57, 245–266 (1970).
Hagedorn, H., Weinert, H.: Untersuchungen über die Ultrastruktur vonSaprolegnia monoica. 1. Die vegetative Hyphe. Z. Naturforsch. (im Druck).
Heath, B.: Structural aspects of the grwoth and reproduction ofSaprolegnia s. sp. Ph. D. Thesis, University London (1969).
Hokin, L.: Dynamic aspects of phospholipids during protein secretion. Int. Rev. Cytol23, 187–208 (1968).
Lessie, P., Lovett, I.: Ultrastructural changes during sporangium formation and zoospore differentiation inBlastocladiella emersonii. Amer. J. Bot.55, 220–236 (1968).
Marchant, R.: The fungi.In: Robards: Electron microscopy and plant ultrastructure. London: Mc. Graw Hill 1970.
Matile, P., Moore, R.: Vacuolation: Origin and development of the lysosomal apparatus in root-tip cells. Planta (Berl.)80, 159–175 (1968).
Moor, H.: Endoplasmic reticulum as the initiator of bud formation in yeast (S. cerevisiae). Arch. Mikrobiol.57, 135–146 (1967).
— Mühlethaler, K.: Fine structure in frozen-etched yeast cells. J. Cell Biol.17, 609–628 (1963).
Moore, R.: Zoospore formation in the phycomyceteAllomyces. J. Cell Biol.23, 108A-109A (1964).
Orrenius, S., Ericsson, I.: Enzyme-membrane relationship in phenobarbital induction of synthesis of drug-metabolizing enzyme system and proliferation of endoplasmic membranes. J. Cell Biol.18, 118–183 (1966).
Picket-Heaps, J.: Some ultrastructural features ofVolvox, with particular reference to the phenomenon of inversion. Planta (Berl.)90, 174–190 (1970).
Schnepf, E.: Leukoplasten beiNitschia alba. Öster. bot. Z.116, 65–69 (1969).
Sievers, A.: Lysosomen-ähnliche Kompartimente in Pflanzenzellen. Naturwissen-schaften53, 334–335 (1966).
Sjöstrand, F., Barajas, L.: A new model for mitochondrial membranes based on structural and on biochemical information. J. Ultrastruct. Res.32, 293–306 (1970).
Thyagarajan, T., Conti, S., Naylor, H.: Electron microscopy of yeast mitochondria Exp. Cell Res.25, 216–218 (1961).
Whaley, G., Dauwalder, M., Kephart, I.: Assembly, continuity, and exchanges in certain cytoplasmic membrane systems. In: Origin and continuity of cell organells. Berlin-Heidelberg-New York: Springer 1971.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hagedorn, H., Weinert, H. Das endoplasmatische Reticulum während der Sporogenese vonSaprolegnia monoica . Archiv. Mikrobiol. 81, 13–24 (1972). https://doi.org/10.1007/BF00715020
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00715020