Abstract
Morphological features of sexual reproduction in the Volvocaceae are reviewed, focusing particularly on gametic union and zygote gemination. Both of the two conjugating gametes of the isogamous generaPandorina, Volvulina andYamagishiella bear a tubular mating structure (mating papilla), and plasmogamy is initiated by union of the papillae tips. On zygote germination, a single biflagellate gone cell is released from the zygote wall. Although all the anisogamous and oogamous genera of the Volvocaceae produce “sperm packets” during gametogenesis and a single gone cell at zygote germination, some difference can be recognized in the male gametes. The male gametes ofEudorina bear a tubular cytoplasmic protuberance (putative mating papllla) near the base of the flagella, whereas such a structure recognized at the light microscopic level is not evident inPleodorina andVolvox. Evolution of the sexual reproduction characteristics of volvocacean algae is discussed on the basis of recent cladistic analysis of morphological data as well as of the ribosomal (r) RNA phylogeny and large subunit of the ribulose-1, 5-biphosphate carboxylase/oxygenase(rbcL) gene trees.
Similar content being viewed by others
References
Bold, H.C. andWynne, M.J. 1985. Introduction to the Algae. 2nd edn. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 720 pp.
Brooks, A.E. 1966. The sexual cycle and intercrossing in the genusAstrephomene. J. Protozool.13: 367–375.
Carefoot, J.R. 1966. Sexual reproduction and intercrossing inVolvulina steinii. J. Phycol.2: 150–156.
Coleman, A.W. 1959. Sexual isolation inPandorina morum. J. Protozool.6: 249–264.
Ettl, H. 1983. Chlorophyta I. Phytomonadia.In H. Ettl, J. Gerloff, H. Heynig and D. Mollenhauer, eds., Sü (wasserflora von Mitteleuropa. Vol. 9. Gustav Fischer Verlag, Stuttgart, 807 pp.
Harris, D.O. andStarr, R.C. 1969. Life history and physiology of reproduction ofPlatydorina caudata Kofoid. Arch. Protistenk.111: 138–155.
Larson, A., Kirk, M.M. andKirk, D.L. 1992. Molecular phylogeny of the volvocine flagellates. Mol. Biol. Evol.9: 85–105.
Matsuda, Y., Musgrave, A., van den Ende, H. andRoberts, K. 1987. Cell walls of algae in the Volvocales: their sensitivity to a cell wall lytic enzyme and labeling with an anti-cell wall glycopeptide ofChlamydomonas reinhardtii. Bot. Mag. Tokyo100: 373–384.
Nozaki, H. 1981: The life history of JapanesePandorina unicocca (Chlorophyta, Volvocales). J. Jpn. Bot.56: 65–72.
Nozaki, H. 1982a. Morphology and reproduction of JapaneseVolvulina steinii (Chlorophyta, Volvocales). J. Jpn. Bot.57: 105–113.
Nozaki, H. 1982b. Gamete conjugation inPandorina (Chlorophyta, Volvocales) with particular reference to the mating papilla. Jpn. J. Phycol.30: 303–304.
Nozaki, H. 1983a. Sexual reproduction inEudorina elegans (Chlorophyta, Volvocales). Bot. Mag. Tokyo96: 103–110.
Nozaki, H. 1983b. Morphology and taxonomy of two species ofAstrephomene (Chlorophyta, Volvocales) in Japan. J. Jpn. Bot.58: 345–352.
Nozaki, H. 1984. Newly found facets in the asexual and sexual reproduction ofGonium pectorale (Chlorophyta, Volvocales). Jpn. J. Phycol.32: 130–133.
Nozaki, H. 1986a. Sexual reproduction inGonium sociale (Chlorophyta, Volvocales). Phycologia25: 29–35.
Nozaki, H. 1986b. Notes on microalgae in Japan (10).Eudorina illinoisensis (Chlorophyta, Volvocales). Jpn. J. Phycol.34: 144.
Nozaki, H. 1986c. Sexual reproduction in the colonial Volvocales (Chlorophyta). Jpn. J. Phycol.34: 232–247.
Nozaki, H. 1986d. Zygote gemination inEudorina elegans var.synoica (Chlorophyta, Volvocales). J. Jpn. Bot.61: 316–320.
Nozaki, H. 1988. Morphology, sexual reproduction and taxonomy ofVolvox carteri f.kawasakiensis f. nov. (Chlorophyta) from Japan. Phycologia27: 209–220.
Nozaki, H. 1989. Morphological variation and reproduction inGonium viridistellatum (Volvocales, Chlorophyta). Phycologia28: 77–88.
Nozaki, H. 1993. Asexual and sexual reproduction ofGonium quadratum (Chlorophyta) with a discussion of phylogenetic relationships within the Goniaceae. J. Phycol.29: 369–376.
Nozaki, H. andItoh, M. 1994. Phylogenetic relationships within the colonical Volvocales (Chlorophyta) inferred from cladistic analysis based on morphological data. J. Phycol.30: 353–365.
Nozaki, H., Itoh, M., Sano, R., Uchida, H., Watanabe, M.M. andKuroiwa, T. 1995. Phylogenetic relationships within the colonial Volvocales (Chlorophyta) inferred fromrbcL gene sequence data. J. Phycol.31: 970–979.
Nozaki, H., Kurolwa, H., Mita, T. andKurolwa, T. 1989.Pleodorina japonica sp. nov. (Volvocales, Chlorophyta) with bacteria-like endosymbionts. Phycologia28: 252–267.
Nozaki, H. andKasaki, H. 1979. Sexual process of JapanesePandorina morum Bory (Chlorophyta). J. Jpn. Bot.54: 363–370.
Nozaki, H. andKuroiwa, T. 1990.Volvulina compacta sp. nov. (Volvocaceae, Chlorophyta) from Nepal. Phycologia29: 410–417.
Nozaki, H. andKuroiwa, T. 1991a. Morphology and sexual reproduction ofGonium multicoccum (Volvocales, Chlorophyta) from Nepal. Phycologia30: 381–393.
Nozaki, H. andKuroiwa, T. 1991b.Pandorina colemaniae sp. nov. (Volvocaceae, Chlorophyta) from Japan. Phycologia30: 449–457.
Nozaki, H. andKuroiwa, T. 1992. Ultrastructure of the extracellular matrix and taxonomy ofEudorina, Pleodorina andYamagishiella gen. nov. (Volvocaceae, Chlorophyta). Phycologia31: 529–541.
Pocock, M.A. 1933.Volvox in South Africa. Ann. S. Afr. Mus.16: 523–646.
Rayburn, W.R. andStarr, R.C. 1974. Morphology and nutrition ofPandorina unicocca sp. nov. J. Phycol.10: 42–49.
Smith, G.M. 1950. Fresh-water Algae of the United States. 2nd. edn. McGraw-Hill Book Company, New York, 719 pp.
Smith, G.M. 1955. Cryptogamic Botany. Volume 1. Algae and Fungi; 2nd ed. McGraw-Hill Book Company, New York, 546 pp.
Starr, R.C. 1962. A new species ofVolvulina Playfair. Arch. Mikrobiol.42: 130–137.
Starr, R.C. 1980. Colonial chlorophytes.In R.E. Cox, ed., Phytoflagellates. Developments in Marine Biology. Vol. 2. Elsevier North Holland, Inc., New York, pp. 147–163.
Stein, J.R. 1958. A morphologic and genetic study ofGonium pectorale. Amer. J. Bot.45: 664–672.
Waters, A.J. 1960. Studies onEudorina. Unpublished Bachelor Thesis, University of California, Berkeley, 25 pp.
Author information
Authors and Affiliations
Additional information
Dedicated to Emeritus Prof. Hideo Kasaki (Tokyo Metropolitan University) on the occasion of his 77th birthday.
Recipient of the Botanical Society Award for Young Scientists, 1994.
Rights and permissions
About this article
Cite this article
Nozaki, H. Morphology and evolution of sexual reproduction in the Volvocaceae (Chlorophyta). J. Plant Res. 109, 353–361 (1996). https://doi.org/10.1007/BF02344484
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02344484