Summary
The primary and secondary cysts of Saprolegnia ferax and the secondary cysts of Dictyuchus sterile have a two layered wall structure, the outer layer of which bears various types of spines. These spines, and the outer wall layer are derived from preformed structures (bars) found in the cytoplasm prior to encystment. Golgi derived vesicles appear to contribute to the inner layer of the primary cyst wall of S. ferax. The outer surface of the secondary cyst walls of this species has fibrils which are not embedded in matrix material.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alexopoulos, c. J.: Introductory mycology. 2nd. Edit. New York: Wiley 1962.
Brown, R. M.: Observations on the relationship of the Golgi apparatus to wall formation in the marine Chrysophycean alga, Pleurochrysis scherffelii Pringsheim. J. Cell Biol. 41, 109–123 (1969).
Crump, E., Branton, D.: Behavior of primary and secondary zoospores of Saprolegnia sp. Canad. J. Bot. 44, 1393–1400 (1966).
Gay, J. L., Greenwood, A. D.: Structural aspects of zoospore production in Saprolegnia ferax with particular reference to the cell and vacuolar membranes. Vol. 18, 95–110 of the Colston Papers. London: Butterworths Scientific Publications 1966.
Hartog, M. M.: On the cytology of the vegetative and reproductive organs of the Saprolegniae. Trans. R. Ir. Acad. 30, 649–701 (1895).
Heath, I. B.: Structural aspects of the growth and reproduction of Saprolegnia spp. Ph. D. thesis. University of London 1969.
—: Hyphal growth in Saprolegnia. Amer. J. Bot. 57, 745 (1970).
Heath, I. B., Gay, J. L., Greenwood, A. D.: Wall formation in the saprolegniales. I. Cytoplasmic vesicles underlying developing walls. In prep. (1970).
—, Greenwood, A. D., Griffiths, H. B.: The origin of flimmer in Saprolegnia, Dictyuchus, Synura and Cryptomonas. J. Cell Sci. 7, 445–461 (1970).
Hotchkiss, R. D.: A microchemical reaction resulting in the staining of polysaccharide structures in fixed tissue preparations. Arch. Biochem. 16, 131–141 (1948).
Manton, I.: Observations on scale production in Prymnesium parvum. J. Cell Sci. 1, 375–380 (1966).
—, Clarke, B., Greenwood, A. D.: Observations with the electron microscope on a species of Saprolegnia. J. exp. Bot. 2, 321–331 (1951).
Meier, H., Webster, J.: An electron microscope study of cysts in the Saprolegniaceae. J. exp. Bot. 5, 401–409 (1954).
Mühlethaler, K.: Ultrastructure and formation of plant cell walls. A. Rev. Plant Physiol. 18, 1–24 (1967).
Northcote, D. H.: Fine structure of cytoplasm in relation to synthesis and secretion in plant cells. Proc. roy. Soc. B 173, 21–30 (1969).
Pearse, A. G. E.: Histochemistry, theoretical and applied, 2nd Edit. London: Churchill 1961.
Pickett-Heaps, J. D.: Preliminary attempts at ultrastructural polysaccharide localization in root tip cells. J. Histochem. Cytochem. 15, 442–445 (1967).
Preston, R. D., Goodman, R. N.: Structural aspects of cellulose microfibril biosynthesis. J. roy. micr. Soc. 88, 513–528 (1968).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Heath, I.B., Greenwood, A.D. Wall formation in the saprolegniales. Archiv. Mikrobiol. 75, 67–79 (1970). https://doi.org/10.1007/BF00412094
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00412094