1887

Abstract

The differentiation of mushroom primordia in young mycelia of is a localized event: the mycelium is not uniformly competent to differentiate, or even to be induced, in all areas. A narrow zone corresponding to the 24 h growth of the youngest hyphae is the only area capable of receiving the obligatory light induction and of eventually differentiating into primordia. The inducible zone migrates outwards with the peripheral hyphae as the mycelium expands and previously competent zones become inactive and non-inducible. Light induction of a zone fixes the zone of differentiation in space and prevents subsequent zones from becoming induced. The light receptor system appears to involve two independent processes. One is activated by very low levels of light, fixes the zone in space and prevents subsequent zones from becoming induced, but does not permit differentiation. A second, requiring higher light levels, triggers development of the primordia. The induction of a responsive zone can occur at 20 °C, but actual development requires 25 °C.

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/content/journal/micro/10.1099/00221287-128-11-2755
1982-11-01
2024-12-14
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References

  1. Galun E. 1971; Morphogenesis in Trichoderma : induction of conidiation by narrow-beam illumination of restricted areas of fungal colony. Plant Cell Physiology 12:779–783
    [Google Scholar]
  2. Hayes W. A. 1978; Cultivated fungi in Agaricales: biological nature. In The Biology and Cultivation of Edible Mushrooms pp. 191–217 Chang S. T., Hayes W. A. Edited by New York & London: Academic Press;
    [Google Scholar]
  3. Leslie T. F., Leonard T. J. 1979; Three independent genetic systems that control initiation of a fungal fruiting body. Molecular and General Genetics 171:257–260
    [Google Scholar]
  4. Manachère G. 1970; Recherches physiologiquessur la fructification de Coprinus congregatus Bull, ex Fr.: action de la lumière; rythme de production de carpophores. Annales des sciences naturelles, botanique 11:1–96
    [Google Scholar]
  5. Moore D., Elhiti M. M. Y., Butler R. D. 1979; Morphogenesis of the carpophore of Coprinuscinereus. New Phytologist 83:695–722
    [Google Scholar]
  6. Raper J. R. 1966 Genetics of Sexuality in Higher Fungi New York: Ronald Press;
    [Google Scholar]
  7. Ross I. K. 1979; An infectious disorder for meiosis in Coprinuscongregatus. In Viruses and Plasmids in Fungi pp. 485–524 Lemke P. A. Edited by New York: M. Dekker;
    [Google Scholar]
  8. Ross I. K. 1982a; The genetic basis for the meiotic disorder of Coprinus congregatus. Current Genetics 5:53–56
    [Google Scholar]
  9. Ross I. K. 1982b; The role of laccase in the initiation of differentiation in Coprinus congregatus. Journal of General Microbiology 128:2763–2770
    [Google Scholar]
  10. Rusmin S., Leonard T. J. 1975; Biochemical induction of fruiting bodies in Schizophyllum commune: bioassay and its application. Journal of General Microbiology 90:217–227
    [Google Scholar]
  11. Taber W. A. 1966; Morphogenesis in Basidiomy- cetes. In The Fungi 2 pp. 387–412 Ainsworth G. C., Sussman A. S. Edited by New York & London: Academic Press;
    [Google Scholar]
  12. Tan K. K. 1978; Light-induced fungal development. In The Filamentous Fungi vol. 3, Developmental Mycology pp. 334–357 Smith J. E., Berry D. R. Edited by New York: J. Wiley;
    [Google Scholar]
  13. Trinci A. P. J. 1971; Influence of width of the peripheral growth zone on the radial growth rate of fungal colonies on solid media. Journal of General Microbiology 67:325–344
    [Google Scholar]
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