1887

Abstract

SUMMARY: Colonies of (Smith) Callen on 1 % (w/v) malt agar at 20° show the first stages in conjugation approximately 40 hr. after inoculation and the first mature zygospores after a further 32–34 hr. Transfer to 5–10° prevents the initiation of conjugation and inhibits the further development of the majority of pairings in which the gametangia are not fully delimited at the time of transfer. Fully delimited gametangia continue to develop and to produce mature zygospores at the low temperature. This effect is almost entirely independent of the composition and pH value of the medium. Sporangia are produced in greater numbers at the low temperature than at 20°. The effect of low temperature on formation of zygospores of and is essentially similar to that with but shows only slight inhibition at 5° and none at 7° or over. The significance of the inhibitory effect is discussed.

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/content/journal/micro/10.1099/00221287-17-3-758
1957-12-01
2024-12-05
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References

  1. Baker R. E. D. 1931; Spore formation in Sporodonia grandis (Link.). New Phytol 30:303
    [Google Scholar]
  2. Barnett H. L., Lilly V. G. 1950; Nutritional and environmental factors influencing asexual sporulation of Choanephora cucurbiratum in culture. Phytopathology 40:80
    [Google Scholar]
  3. Callen E. O. 1940; Morphology, cytology and sexuality of the homothallic Rhizopus sexualis (Smith) Callen. Ann. Bot., Lond. N.S 4:791
    [Google Scholar]
  4. Hawker L. E. 1950 Physiology of Fungi University of London Press;
    [Google Scholar]
  5. Hawker L. E. 1957 The Physiology of Reproduction in Fungi Cambridge Monographs in Experimental Biology.Cambridge University Press;
    [Google Scholar]
  6. Hesseltine C. W., Anderson P. 1956; The genus Thamnidium and a study of the formation of its zygospores. Amer.J. Bot 43:696
    [Google Scholar]
  7. Lilly V. G., Barnett H. L. 1951 Physiology of the fungi New York:: McGraw Hill;
    [Google Scholar]
  8. Robbins W. J., Schmitt M. B. 1945; Factor Z2 and gametic reproduction by Phycomyces. Amer.J. Bot 32:320
    [Google Scholar]
  9. Smith G. 1938; New species of mould fungi. Mucor sexualis. Trans. Brit, mycol. Soc 22:252
    [Google Scholar]
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