1887

Abstract

The fine structure of the septum in the vegetative hypha of the mycoparasite is described. The cross-wall, continuous with the inner electron-lucent layer of the hyphal wall, bears a central pore with a flared margin occupied by a biumbonate electron-dense plug. A globose body, surrounded by a zone of ribosome-free cytoplasm, is situated next to the septal pore on each side of the cross-wall. In the neck of the haustorium, a globose body is normally observed only on that side of the septal pore next to the appressorium. Globose bodies appear structureless; they are electron-dense when fixed in potassium permanganate and of variable electron density in aldehyde-osmium fixations. Cytoplasmic continuity is maintained through the septal pore by the plasmalemma. In the sporangiophore and sporiferous branchlets, the septal plug bears an upper globose pro-tuberance and a lower obconic one. The hyphal septum in is ultrastructurally similar to that of . The possible functional and taxonomic significance of such septa is indicated.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-111-2-303
1979-04-01
2021-07-24
Loading full text...

Full text loading...

/deliver/fulltext/micro/111/2/mic-111-2-303.html?itemId=/content/journal/micro/10.1099/00221287-111-2-303&mimeType=html&fmt=ahah

References

  1. BENJAMIN R.K. The merosporangiferous Mucorales. Aliso 1959; 4:321–433
    [Google Scholar]
  2. BENJAMIN R.K. Addenda to the merosporangiferous Mucorales, I.. Aliso 1961; 5:11–19
    [Google Scholar]
  3. BENJAMIN R.K. Addenda to the merosporangiferous Mucorales, 11.. Aliso 1963; 5:273–288
    [Google Scholar]
  4. BENJAMIN R.K. The merosporangium.. Mycologia 1966; 58:1–42
    [Google Scholar]
  5. BENNY G.L. Histochemistry of the cell wall and septum of vegetative cells of selected species of Dimargaritaceae and Kickxellaceae. Mycologia 1972; 64:854–862
    [Google Scholar]
  6. BENNY G.L., ALDRICH H. C. Ultrastructural observations on septal and merosporangial ontogeny in Linderina pennispora (Kickxellales ; Zygomycetes).. Canadian Journal of Botany 1975; 53:2325–2335
    [Google Scholar]
  7. BRACKER C.E. Ultrastructure of the haustorial apparatus of Erysiphe graminis and its relationship to the epidermal cell of barley.. Phytopathology 1968; 58:12–30
    [Google Scholar]
  8. FARR D.F., LICHTWARDT R.W. Some cultural and ultrastructural aspects of Smittium culisetae (Trichomycetes) from mosquito larvae.. Mycologia 1967; 59:172–182
    [Google Scholar]
  9. JEFFRIES P., YOUNG T.W.K. Scanning electron and light microscopy of appressorium development in Piptocephalis unispora (Mucorales).. Archives of Microbiology 1975a; 103:293–296
    [Google Scholar]
  10. JEFFRIES P., YOUNG T . W. K. Ultrastructure of the sporangiospore of Piptocephalis unispora (Mucorales). Archives of Microbiology 1975b; 105:329–333
    [Google Scholar]
  11. JEFFRIES P., YOUNG T.W.K. Physiology and fine structure of Piptocephalis unispora prior to infection.. Archives of Microbiology 1976a; 107:99–107
    [Google Scholar]
  12. JEFFRIES P., YOUNG T.W.K. Ultrastructure of infection of Cokeromyces recurvatus by Piptocephalis unispora (Mucorales).. Archives of Microbiology 1976b; 109:277–288
    [Google Scholar]
  13. KHAN S.R. Ultrastructure of the septal pore apparatus in Tremella. Journal of General Microbiology 1976; 97:339–342
    [Google Scholar]
  14. KREGER-VAN RIJ N. J. W., VEENHUIS M. Septa1 pores in Endomycopsis platypodis and E. monospora. Journal of General Microbiology 1969; 57:91–96
    [Google Scholar]
  15. KREISEL H. Grundzuge eines Natiirlichen Systems der Pilze. Lehre:J.Cramer. 1969
    [Google Scholar]
  16. LICHTWARDT R.W. The Trichomycetes: what are their relationships . Mycologia 1973; 65:1–20
    [Google Scholar]
  17. MOORE R.T. The ultrastructure of fungal cells.. in The Fungi 1965; 1 pp 95–118 Ainsworth G.C., Sussman A.S. London: Academic Press;
    [Google Scholar]
  18. MOORE R.T., MARCHANT R. Ultrastructural characterization of the basidiomycete septum of Polyporus biennis . Canadian Journal of Botany 1972; 50:2463–2469
    [Google Scholar]
  19. MOORE R.T., MCALEAR J. H. Fine structure of Mycota. Observations on septa of Ascomycetes and Basidiomycetes. American Journal of Botany 1962; 49:84–94
    [Google Scholar]
  20. Moss S.T. Septa1 structure in the Trichomycetes with special reference to Astrepfonema gammari (Eccrinales).. Transactions of the British Mycological Society 1975; 65:115–127
    [Google Scholar]
  21. Moss S. T., YOUNG T. W. K. Phyletic considerations of the Harpellales and Asellariales (Trichomycetes, Zygomycotina) and the Kickxellales (Zygomycetes, Zygomycotina).. Mycologia 1978; 70:944–963
    [Google Scholar]
  22. POLITIS D. J., WHEELER H. Ultrastructural study of penetration of maize leaves by Colletrotrichum graminicola . Physiological Plant Pathology 1973; 3:465–471
    [Google Scholar]
  23. REICHLE R.E., LICHTWARDT R. W. Fine structure of the trichomycete Harpella melusinae from black-fly guts. Archiv fÜr Mikrobiologie 1972; 81:103–125
    [Google Scholar]
  24. YOUNG T.W.K. Ultrastructure of aerial hyphae in Linderina pennispora . Annals of Botany, N.S. 1969; 33:211–216
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-111-2-303
Loading
/content/journal/micro/10.1099/00221287-111-2-303
Loading

Data & Media loading...

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