1887

Abstract

SUMMARY: An investigation into the effect of light on the growth of revealed that whereas exposure to light caused diminished growth on pea medium, growth on several other media was not decreased. This diminished growth was an indirect effect of light caused by an alteration of the medium. All the tested reacted similarly, but most other fungi examined were unaffected. Germination of zoospores of appeared to be especially sensitive. This inhibitory effect was not removed by heat and peroxides were not, therefore, considered as the immediate cause of the inhibition. Nevertheless, following exposure to light, peroxide formation and the appearance of the inhibitory effect were closely associated. Addition of several reducing compounds to pea medium overcame the effect of exposure to light on zoospore germination. Mycelial growth was also improved by similar additions to a defined medium. This was particularly marked following the addition of glutathione (10 ) and -ascorbic acid (1·0 g./l). The decrease in reducing potential during illumination might, in the light of experiments conducted with defined media, explain the observed effects of illumination.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-45-2-315
1966-11-01
2021-08-02
Loading full text...

Full text loading...

/deliver/fulltext/micro/45/2/mic-45-2-315.html?itemId=/content/journal/micro/10.1099/00221287-45-2-315&mimeType=html&fmt=ahah

References

  1. Arnow L. E. 1936; Effects produced by the irradiation of proteins and amino acids.. Physiol. Rev 16:671
    [Google Scholar]
  2. Bedford T. H. B. 1927; The nature of the action of ultraviolet on micro-organisms.. Br. J. Exp. Path 8:437
    [Google Scholar]
  3. Bennett Clark J., Wyss O., Stone W. S. 1950; Induction of mutation in Micrococcus pyogenes by chemical inactivation of sulphydryl groups.. Nature, Lond 166:340
    [Google Scholar]
  4. Brown W. 1955; On the physiology of parasitism in plants.. Ann. appl. Biol 43:325
    [Google Scholar]
  5. Crosier W. 1934; Studies in biology of Phytophthora infestans (Mont.) de Bary.. Mem. Cornell Univ. Agric. Exp. Sta. no. 145
    [Google Scholar]
  6. Geise A. C. 1955; Peroxide and ultraviolet radiation effects.. Exp. Cell Res 8:369
    [Google Scholar]
  7. Hall A. M. 1959; The culture of Phytophthora infestans in artificial media.. Trans. Br. mycol. Soc 42:15
    [Google Scholar]
  8. Hirst J. M. 1953; Changes in atmospheric spore content: diurnal periodicity and the effects of weather.. Trans. Br. mycol. Soc 36:375
    [Google Scholar]
  9. Hodgson W. A. 1958; Growth of four races of Phytophthora infestans (Mont.) de Bary in synthetic media.. Can. J. Pl. Sci 38:145
    [Google Scholar]
  10. Isherwood F. A. 1959; Chemistry and biochemistry of glutathione.. Biochem. Soc. Symp 17:3
    [Google Scholar]
  11. Kaul R., Shaw M. 1960; The physiology of host parasite relations. VI. Oxidation- reduction changes in wheat leaf sap caused by rust infection.. Can. J. Bot 38:399
    [Google Scholar]
  12. Koch R. B., Stern B., Ferrari C. G. 1958; Linoleic acid and Trilinolein as substrates for Soybean lipoxidase(s).. Archs. Biochem. Biophys 78:165
    [Google Scholar]
  13. Lundberg W. O. 1961 Autoxidation and Antioxidants New York: J. Wiley and Sons, Inc.;
    [Google Scholar]
  14. Pontecorvo G. 1953; Genetics of Aspergillus nidulans.. Advanc. Genet 5:141
    [Google Scholar]
  15. Sahai B. I., Shaw M. 1961; The physiology of host parasite relations. VIII. Effects of rust infection on ascorbic acid and glutathione in wheat leaves.. Can. J. Bot 39:1327
    [Google Scholar]
  16. Shaw M. 1963; The physiology and host-parasite relations of the rusts.. A. Rev. Phytopath 1:258
    [Google Scholar]
  17. Weinhold A. R., Hendrix F. F. 1963; Inhibition of fungi by culture media previously exposed to light.. Phytopathology 53:1280
    [Google Scholar]
  18. Woodrow J. W., Bailey A. C., Fulmer E. I. 1927; The effect of ultraviolet radiation upon yeast culture media.. Pl. Physiol 2:171
    [Google Scholar]
  19. Woodward G. E. 1933; The effect of ultraviolet, radium and X-ray irradiation on glutathione in pure solution.. Biochem. J 27:1411
    [Google Scholar]
  20. Wyss O., Bennett Clark J., Hass F., Stone W. S. 1948; The role of peroxide in the biological effects of irradiated broth.. J. Bact 56:51
    [Google Scholar]
  21. Yarwood C. E. 1937; The relation of light to the diurnal cycle of sporulation of certain downy mildews.. J. Agric. Res 54:365
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-45-2-315
Loading
/content/journal/micro/10.1099/00221287-45-2-315
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