Summary
The morphological similarities between the kinetosome and the second centriole of the zoospores of Phlyctochytrium kniepii and P. punctatum (Chytridiomycetes) suggest that the second centriole in the chytrid zoospore is a vestigial flagellum base. It is suggested that the term vestigial kinetosome may also be used when referring to the structure which is presently termed the second centriole of the chytrid zoospore. Morphological similarities between the chytrid zoospores of P. kniepii and P. punctatum and the zoospores of Rhizidiomyces apophysatus (Hyphochytridiomycetes) are noted. The possible biflagellate origin of fungi with uniflagellate zoospores is discussed. The third fiber (C fiber) of the kinetosome triplet is shown to form as an outgrowth of the B fiber of the kinetosome doublet.
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.
References
Afzelius, B. A.: Electron microscopy of the sperm tails. Results obtained with a new fixative. J. biophys. biochem. Cytol. 5, 269–278 (1959).
Bessey, E.: Some problems in fungus phylogeny. Mycologia (N.Y.) 34, 355–379 (1942).
—: Morphology and taxonomy of fungi. New York: Hafner Publishing Comp. 1964.
DeBary, A.: Vergleichende Morphologie und Biologie der Pilze, Mycetezoen und Bacterien. Leipzig: Wilhelm Engelmann 1884.
Fuller, M. S.: Structure of the uniflagellate zoospores of aquatic Phycomycetes, Vol. 18, 67–84 of the Colston Papers London: Butterworths Scientific Publications 1966.
—, and S. A. Calhoun: Microtubule-kinetosome relationships in the motile cells of the Blastocladiales. Z. Zellforsch. 87, 526–533 (1968).
—, and R. E. Reichle: The zoospore and early development of Rhizidiomyces apophysatus. Mycologa (N. Y.) 57, 946–961 (1965).
Gibbons, I. R.: The relationship between the fine structure and direction of beat in gill cilia of a lamellibranch mollusc. J. biophys. biochem. Cytol. 11, 179–205 (1961).
—, and A. V. Grimstone: On flagellar structure in certain flagellates. J. biophys. biochem. Cytol. 7, 697–716 (1960).
Koch, W. J.: Studies of the motile cells of chytrids. I. Electron microscope observations of the flagellum. blepharoplast, and rhizoplast. Amer. J. Bot. 43, 811–819 (1956).
—: Studies on the motile cells of chytrids. II. Internal structure of the body observed with light microscopy. Amer. J. Bot. 45, 59–72 (1958).
—: Studies of the motile cells of chytrids. III. Major types. Amer. J. Bot. 48, 786–788 (1961).
Leedale, G. F.: Euglenoid Flagellates. Englewood Cliffs, New Jersey: Prentice Hall, Inc. 1967.
Lessie, P. A., and J. S. Lovett: Ultrastructural changes during sporangium formation and zoospore differentiation in Blastocladiella emersonii. Amer. J. Bot. 55, 220–236 (1968).
Machlis, L.: Growth and nutrition of water molds in the sub-genus. Euallomyces II. Optimal composition of the minimal medium. Amer. J. Bot. 40, 450–460 (1953).
Mez, C.: Versuch einer Stammesgeschichte des Pilzreiches. Schriften konigsberg. gelehrten. Ges. Naturw. Klasse 6, 1–58 (1929).
Pitelka, D. R., and F. M. Child: The locomotor apparatus of ciliates and flagellates: relations between structure and function, pp. 131–198. In: S. J. Hutner (ed.): Biochemistry and Physiology of Protozoa, Vol. 3. New York: Academic Press 1964.
Reichle, R. E., and M. S. Fuller: The fine structure of Blastocladiella emersonii zoospores. Amer. J. Bot. 54, 81–92 (1967).
Reynolds, E. S.: The use of lead citrate at high pH at an electronopaque stain in electron microscopy. J. Cell Biol. 17, 208–212 (1963).
Emphlett, C. J., and L. W. Olson: Cytological and morphological studies of a new species of Phlyctochytrium. Mycologia (N. Y.) 59, 1085–1096 (1967).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Olson, L.W., Fuller, M.S. Ultrastructural evidence for the biflagellate origin of the uniflagellate fungal zoospore. Archiv. Mikrobiol. 62, 237–250 (1968). https://doi.org/10.1007/BF00413894
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00413894