Summary
-
1.
Zoospore mother cells in Bulbochaete are shown to be surrounded by a structure interposed between the plasmalemma and the cell wall which is interpreted as the precursor of the vesicle which temporarily surrounds the zoospore on its release.
-
2.
As this vesicle precursor matures it thickens apically to form a ring consisting of a core and two layers. These two layers envelope the young zoospore as its vesicle. Later a space, referred to as the sub-ring, develops within the middle layer of the ring.
-
3.
Histochemical tests indicate that the vesicle precursor and ring are highly proteinaceous with a small carbohydrate component.
-
4.
Dehiscence is apical and thought to be assisted by the apical ring. Upon release of the zoospore, its vesicle is essentially composed of the inner layer of its precursor.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature
Chapman, J. A., Vujičić, R.: The fine structure of sporangia of Phytophthora erythroseptica Pethyb. J. gen. Microbiol. 41, 275–282 (1965).
Cook, P. W.: Growth and reproduction of Bulbochaete hiloensis in unialgal culture. Trans. Amer. micr. Soc. 81, 384–395 (1962).
Fraser, T. W.: personal communication (1969).
—, Gunning, B. E. S.: The ultrastructure of plasmodesmata in the filamentous green alga, Bulbochaete hiloensis (Nordst.) Tiffany. Planta (Berl.) 88, 244–254 (1969).
Hicks, J. D., Matthaei, E.: A selective fluorescence stain for mucin. J. Path. Bact. 75, 473–476 (1958).
Hill, G. J. C., Machlis, L.: An ultrastructural study of vegetative cell division in Oedogonium borisianum. J. Phycol. 4, 261–271 (1968).
Matukas, V. J., Panner, B. J., Orbison, J. L.: Studies on ultrastructural identification and distribution of protein-polysaccharide in cartilage matrix. J. Cell Biol. 37, 365–378 (1967).
Pate, J. L., Ordal, E. J.: The fine structure of Chondrococcus columnaris. III: The surface layers of Chondrococcus columnaris. J. Cell Biol. 35, 37–51 (1967).
Pearse, A. G. E.: Histochemistry theoretical and applied. 4th Ed. London: Churchill 1968.
Pringsheim, N.: Beiträge zur Morphologie und Systematik der Algen. I: Morphologie der Oedogonieen. Jb. wiss. Bot. 1, 25–29 (1958).
Retallack, B., Butler, R. D.: The development and structure of pyrenoids in Bulbochaete hiloensis. J. Cell Sci. 6, 229–241 (1970).
Tiffany, L. H.: The algal genus Bulbochaete. Trans. Amer. micr. Soc. 47, 121–177 (1928).
Trerice-Retallack, E., von Maltzahn, K. E.: Some observations on zoosporogenesis in the female strain of Oedogonium cardiacum. Canad. J. Bot. 46, 767–771 (1968).
Venable, J. H., Coggeshall, R.: A simplified lead citrate stain. J. Cell Biol. 25, 407–408 (1965).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Retallack, B., Butler, R.D. The development and structure of the zoospore vesicle in Bulbochaete hiloensis . Archiv. Mikrobiol. 72, 223–237 (1970). https://doi.org/10.1007/BF00412174
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00412174