1887

Abstract

SUMMARY: Thin-walled sporangia of an African strain of dehisced in exposed drops of water in 1 to 2 days. Good aeration was necessary. During dehiscence granules in the sporangial contents became redistributed and a lateral bulge arose on the sporangial wall. A split opened at the crest of the bulge, and the sporangial contents cleaved into planonts. A vesicle emerged from the split, expanded, filled with planonts from within the sporangium, burst, and finally dissolved. The wall of the sporangium was initially two-layered, but a third amorphous layer continuous with the vesicle developed internally during dehiscence. Dividing nuclei were seen in the early stages of dehiscence. The nuclear membrane persisted during division and intranuclear spindle microtubules arose near differentiated pockets in the nuclear envelope adjoining the apparently unpaired centrioles. Shortly before cleavage, groups of lipid droplets in the sporangium became associated with each nucleus together with an apparently single elongated centriole. After cleavage, flagella were well developed, but the ribosomes were still dispersed throughout the cytoplasm of the planonts. They then became sequestered into large membrane-bounded nuclear caps. A single large mitochondrion was present in each planont, possibly arising by coalescence of several smaller ones. A lipid body adjoined each mitochondrion. The cytoplasm of each unliberated planont contained numerous cytoplasmic vesicles and a single crystalline body. An abnormal ‘9 + 1’ flagellum was seen.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-72-1-185
1972-08-01
2022-01-22
Loading full text...

Full text loading...

/deliver/fulltext/micro/72/1/mic-72-1-185.html?itemId=/content/journal/micro/10.1099/00221287-72-1-185&mimeType=html&fmt=ahah

References

  1. BLACKWELL E. 1940; A life cycle of Blastocladia pringsheimii Reinsch.. Transactions of the British Mycolo-gical Society 24:68–86
    [Google Scholar]
  2. CANTINO E. C., LOVETT J. S., LEAK L. V., LYTHGOE J. 1965; The single mitochondrion, fine structure, and germination of the spore of Blastocladiella emersonii.. Journal of General Microbiology 31:393–404
    [Google Scholar]
  3. CANTINO E. C., MACK J. P. 1969; Form and function in the zoospore of Blastocladiella emersonii. I. The γ particle and satellite ribosome package.. Nova Hedwigia 18:115–148
    [Google Scholar]
  4. CANTINO E. C., TRUESDELL L. C. 1971; Cytoplasmic γ-like particles and other ultrastructural aspects of zoospores of Blastocladiella brittanica. . Transactions of the British Mycological Society 56:169–179
    [Google Scholar]
  5. COUCH J. N. 1945; Revision of the genus Coelomomyces parasitic in insect larvae.. Journal of Elisha Mitchell Scientific Society 61:124–136
    [Google Scholar]
  6. COUCH J. N. 1967 Sporangial germination of Coelomomyces punctatus and the conditions favoring the infection of Anopheles quadrimaculatus under laboratory conditions.. Proceedings of the Joint U.S.-Japan Seminar on Microbial Control of Insect Pests, Fukuoka:93–105
    [Google Scholar]
  7. COUCH J. N., DODGE H. R. 1947; Further observations on Coelomomyces, parasitic on mosquito larvae.. Journal of Elisha Mitchell Scientific Society 63:69–79
    [Google Scholar]
  8. COUCH J. N., UMPHLETT C. J. 1693 Coelomomyces infections.. In Insect Pathology, an Advanced Treatise vol 11 pp. 149–188 Edited by Steinhaus E. A. New York and London:: Academic Press.;
    [Google Scholar]
  9. DE MEILLON B., MUSPRATT J. 1943; Germination of the sporangia of Coelomomyces Keilin.. Nature, London: 152:507
    [Google Scholar]
  10. FULLER M. S., OLSON L. W. 1971; The zoospore of Allomyces.. Journal of General Microbiology 66:171–183
    [Google Scholar]
  11. FULLER M. S., REICHLE R. E. 1968; The fine structure of Monoblepharella sp. zoospores.. Canadian Journal of Botany 46:279–283
    [Google Scholar]
  12. HEATH I. B., GREENWOOD A. D. 1970; Centriole replication and nuclear division in Saprolegnia. . Journal of General Microbiology 62:139–148
    [Google Scholar]
  13. ICHIDA A. A., FULLER M. S. 1968; Ultrastructure of mitosis in the aquatic fungus Catenaria anguillulae. . Mycologia 60:141–155
    [Google Scholar]
  14. Lessie P. E., Lovett J. S. 1968; Ultrastructural changes during sporangium formation and zoospore differentiation in Blastocladiella emersonii. . American Journal of Botany 55:220–236
    [Google Scholar]
  15. LLOYD D. 1938; A record of two years' continuous observations on Blastocladia pringsheimii Reinsch.. Transactions of the British Mycological Society 21:152–166
    [Google Scholar]
  16. Lum P. T. M. 1963; The infection of Aedes taeniorhynchus (Wiedemann) and Psorophora howardii Coquillet by the fungus Coelomomyces. . Journal of Insect Pathology 5:157–166
    [Google Scholar]
  17. MADELIN M. F. 1968; Studies on the infection by Coelomomyces indicus of Anopheles gambiae. . Journal of Elisha Mitchell Scientific Society 84:115–124
    [Google Scholar]
  18. MUSPRATT J. 1946; On Coelomomyces fungi causing high mortality of Anopheles gambiae larvae in Rhodesia.. Annals of Tropical Medicine and Parasitology 40:10–17
    [Google Scholar]
  19. MUSPRATT J. 1963; Destruction of the larvae of Anopheles gambiae Giles by a Coelomomyces fungus.. Bulletin of the World Health Organisation 29:81–86
    [Google Scholar]
  20. RASIN K. 1929; Coelomomyces chironomi n. sp., houba cizopasici v dutine telni larev Chironoma.. Biologicke Spisy Vysoke Skoly Zvirolekarske 8:1–13
    [Google Scholar]
  21. REICHLE R. E. 1969; Fine structure of Phytophthora parasitica zoospores.. Mycologia 61:30–51
    [Google Scholar]
  22. REICHLE R. E., FULLER M. S. 1967; The fine structure of Blastocladiella emersonii zoospores.. American Journal of Botany 54:81–92
    [Google Scholar]
  23. REYNOLDS E. S. 1963; The use of lead citrate at high pH as an electron-opaque stain in electron microscopy.. Journal of Cell Biology 17:19–58
    [Google Scholar]
  24. SILVEIRA A. 1969; Ultrastructural studies on a ‘nine plus one’ flagellum.. Journal of Ultrastructure Research 26:274–288
    [Google Scholar]
  25. SKUCAS G. P. 1968; Changes in wall and internal structure of Allomyces resistant sporangia during germination.. American Journal of Botany 55:291–295
    [Google Scholar]
  26. TEMMINK J. H. M., CAMPBELL R. N. 1969; The ultrastructure of Olpidium brassicae. II. Zoospores.. Canadian Journal of Botany 47:227–231
    [Google Scholar]
  27. VAVRA J., JOYON L. 1966; Étude sur la morphologie, le cycle evolutif et la position systematique de Callimastix cyclopis Weissenberg 1912.. Protistologica 2:5–15
    [Google Scholar]
  28. WHISLER H. C., SHEMANCHUK J. A., TRAVLAND L. B. 1971; Cytology of Coelomomyces psorophorae from mosquito larvae collected in Southern Alberta. (Abstract.). American Journal of Botany 58:475
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-72-1-185
Loading
/content/journal/micro/10.1099/00221287-72-1-185
Loading

Data & Media loading...

Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error