A Study of the Kinetics of Hyphal Extension and Branch Initiation of Fungal Mycelia Free

Abstract

SUMMARY: Growth of and was studied by time lapse photography. The total hyphal length of the mycelium of each species increased at an exponential rate; in exponential growth continued until the mycelium had a total hyphal length in excess of 10 mm. After spore germination there was an initial phase of discontinuous tip production followed by a phase of ‘ continuous ’ tip production. The hyphal length and number of tips possessed by a mycelium increased exponentially at approximately the same specific growth rate.

The amplitude of the oscillations in the length of the hyphal growth unit of a mycelium decreased progressively during mycelial growth and eventually the growth unit attained a more or less constant value. The results support the hypothesis that mycelial growth involves the duplication of a ‘ growth unit ’ which consists of a tip and a certain mean length of hypha.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-81-1-225
1974-03-01
2024-03-29
Loading full text...

Full text loading...

/deliver/fulltext/micro/81/1/mic-81-1-225.html?itemId=/content/journal/micro/10.1099/00221287-81-1-225&mimeType=html&fmt=ahah

References

  1. Bartnicki-Garcia S. 1973; Microbial differentation. Symposia of the Society for General Microbiology 23 pp. 245–268
    [Google Scholar]
  2. Caldwell I. Y., Trinci A. P. J. 1973; The growth unit of the mould Geotrichum candidum . Archiv für Mikrobiologie 88:1–10
    [Google Scholar]
  3. Grove S. N., Bracker C. E., Morre D. J. 1970; An ultrastructural basis for hyphal tip growth in Pythium ultimum . American Journal of Botany 59:245–266
    [Google Scholar]
  4. Plomley N. J. B. 1959; Formation of the colony in the fungus Chaetomium. Australian Journal of Biological Sciences 12:53–64
    [Google Scholar]
  5. Trinci A. P. J. 1969; A kinetic study of the mode of growth of Aspergillus nidulans and other fungi. Journal of General Microbiology 57:11–24
    [Google Scholar]
  6. Trinci A. P. J. 1970; Kinetics of apical and lateral branching in Aspergillus nidulans and Geotrichum lactis . Transactions of the British Mycological Society 55:17–28
    [Google Scholar]
  7. Trinci A. P. J. 1971a; Influence of the peripheral growth zone on the radial growth rate of fungal colonies. Journal of General Microbiology 67:325–344
    [Google Scholar]
  8. Trinci A. P. J. 1971b; Exponential growth of the germ tubes of fungal spores. Journal of General Microbiology 67:345–348
    [Google Scholar]
  9. Trinci A. P. J. 1973a; The hyphal growth unit of wild type and spreading colonial mutants of Neurospora crassa . Archiv für Mikrobiologie 91:127–136
    [Google Scholar]
  10. Trinci A. P. J. 1973b; Growth of wild type and spreading colonial mutants of Neurospora crassa in batch culture and on agar medium. Archiv für Mikrobiologie 91:113–126
    [Google Scholar]
  11. Trinci A. P. J., Banbury G. 1967; A study of the growth of the tall conidiophores of Aspergillus giganteus . Transactions of the British Mycological Society 50:525–538
    [Google Scholar]
  12. Trinci A. P. J., Collinge A. 1973; Influence of l-sorbose on the growth and morphology of Neurospora crassa . Journal of General Microbiology 78:179–192
    [Google Scholar]
  13. Trinci A. P. J., Collinge A. 1974; Occlusion of the septal pores of damaged hyphae of Neurospora crassa by hexagonal crystals. Protoplasma in the Press
    [Google Scholar]
  14. Vogel H. J. 1956; A convenient growth medium for Neurospora (medium N). Microbiology and Genetical Bulletin 13:4L
    [Google Scholar]
  15. Zalokar M. 1959; Enzyme activity and cell differentiation in Neurospora. American Journal of Botany 46:555–559
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-81-1-225
Loading
/content/journal/micro/10.1099/00221287-81-1-225
Loading

Data & Media loading...

Most cited Most Cited RSS feed