The Cytology of Prochloron

  • Hewson Swift

Abstract

Cytological observations made on Prochloron cells from a variety of didemnid hosts present a consistent picture. Characteristic differences occur between cells from different sources (Figures 10, 12–14), but obvious similarities indicate that these organisms form a coherent and probably closely related group. Prochlorophytes are clearly prokaryotes. Nuclei and mitochondria are absent. Photosynthetic membranes are free in the cell and are not packaged into chloropiasts. Various inclusions, DNA filaments, protein crystalloids, pigment and storage granules are usually not membrane-limited. The only other true membrane systems present are the cell-limiting plasmalemma and membranes surrounding vacuole-like regions of low optical density.

Keywords

Photosynthesis Sponge Carotenoid DAPI Glutaraldehyde 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References (Additional to Bibliography)

  1. Codd, G. A., and W. J. N. Marsden. The carboxysomes (polyhedral bodies) of autotrophic prokaryotes. Biol. Rev. 59: 389–422; 1984sCrossRefGoogle Scholar
  2. Echlin, Patrick. The fine structure of the blue-green alga Anacystis montana f. minor grown in continuous illumination. Protoplasma 58: 439–457; 1964.CrossRefGoogle Scholar
  3. Eldredge, L. G. A taxonomic review of Indo-Pacific didemnid ascidians and descriptions of 23 Central Pacific species. Micronesica 2: 161–261; 1965.Google Scholar
  4. Gantt, E. and S. F. Conti. Ultrastructure of blue-green algae. J. Bacterial. 97: 1486–1493; 1969.Google Scholar
  5. Kislev, Naomi, Hewson Swift, and Lawrence Bogorad. Nucleic acids of chloroplasts and mitochondria of Swiss chard. J. Cell Biol. 25: 327–344; 1965.CrossRefGoogle Scholar
  6. Kott, P. Didemnid-algal symbioses: algal transfer to a new host generation. Proc. Fourth International Coral Reef Symposium, Manila. 2: 721–723; 1981.Google Scholar
  7. Lauritis, James A., Eugene L. Vigil, Louis Sherman and Hewson Swift. Photosynthetically linked oxidation of diaminobenzidine in blue-green algae. J. Ultrastr. Res. 53: 331–344; 1975.CrossRefGoogle Scholar
  8. Miller, K. R., and J. S. Jacob. The Rhodopseudomonas viridis photosynthetic membrane: arrangement in situ. Arch. Microbiol. 142: 333–339; 1985.CrossRefGoogle Scholar
  9. Shively, J. M., Frances Ball, D. H. Brown, and R. E. Saunders. Functional organelles in prokaryotes: polyhedral inclusions (carboxysomes) of Thiobacillus neopolitanus. Science 182: 584–586; 1973.CrossRefGoogle Scholar
  10. Swift, Hewson. Nucleic acids of mitochondria and chloroplasts. Amer. Naturalist. 99: 210–227; 1965.Google Scholar
  11. Swift, H., and G. Leser. Cytochemical studies on prochlorophytes: localization of DNA and ribulose 1,5-bisphosphate carboxylase-oxygenase. Phycologia (in press); 1989.Google Scholar
  12. Watson, Stanley W., and Charles E. Remsen. Cell envelope of Nitrosocystis oceanus. J. Ultrastr. Res. 33: 148–160; 1970.CrossRefGoogle Scholar

Copyright information

© Routledge, Chapman & Hall, Inc. 1989

Authors and Affiliations

  • Hewson Swift

There are no affiliations available

Personalised recommendations