Summary
The response of the fungi investigated to duration of exposure to light varies with the variation in the light intensity employed. Using relatively low intensity light (160 and/or 300 foot candles/inch2), the growth ofMyrothecium verrucaria &Pestalotia gracilis was not affected by the increase in the time of light exposure, while that ofPleurotus ostreatus was checked. Fruiting under the same conditions was hastened on exposure to light. Under higher light intensity (950 foot candles/inch2), growth ofMyrothecium was not affected, while that ofPestalotia andPleurotus decreased as the daily period of exposure to light increased.
Pleurotus cultures exposed continuously to light showed practically no growth, and combined addition of malt and yeast extracts had a noticeable growth promoting effect on cultures exposed continuously to light, but not significantly on those kept in the dark. This was explained by assuming the presence in malt and yeast extracts of light sensitive growth promoting substances. The effect of light on growth ofPleurotus was found to be concerned with both cell mechanism and medium: light probably inhibits inside the cell the synthesis of one or more substances essential for growth and at the same time it favors the breakdown in the medium of one or more substances required for growth.
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References
Aschan, K. 1954. The production of fruit bodies inCollybia velutipes. I. Influence of different cultural conditions; Physiol. Plantarum7: 571–591.
Bisby, G. R. 1925. Zonation in cultures ofFusarium discolor sulphureum; Mycologia17: 89–97.
Brefeld, O. 1877. Botanische Untersuchungen über Schimmelpilze, Leipzig3: 1–266.
Brown, W. 1925. Studies in the genusFusarium. II. An analysis of factors which determine the growth forms of various strains; Ann. Bot.39: 373–408.
Buchbinder, L., Solowey, M. &Phelps, E. P. 1941. Studies on Microorganisms in stimulated room environments. III. The survival rates of streptococci in the presence of natural daylight and sunlight and artificial illumination; J. Bact.42: 353–366.
Cantino, E. C. &Hornstein, E. A. 1956. The stimulatory effect of light upon growth and CO2 fixation inBlastocladiella. I. The S.K.I. cycle; Mycologia48: 777–800.
Cantino, E. C. &Hornstein, E. A. 1959. The stimulatory effect of light upon growth and CO2 fixation inBlastocladiella. III. Further studies invivo and invitro; Physiol. Plantarum12: 251–264.
Coons, G. H. 1916. Factors involved in the growth and the pycnidium formation ofPlenodomus fuscomaculans; J. agric. Res.5: 713–769.
Dickson, H. 1939. The effect on growth ofSclerotinia fructigena of alternating periods of light and darkness of equal length. Ann. Bot. (N.S.)3: 131–136.
Fikry, A. 1932. Investigations on the wilt disease of Egyptian cotton caused by variousFusarium spp.; Ann. Bot.46: 29–70.
Gray W. D. 1938. Effect of light on the fruiting of Myxomycetes; Amer. J. Bot.25: 511–522.
Gray, W. D. 1941. Some effects of heterochromatic ultraviolet radiation on Myxomycete plasmodia; Amer. J. Bot.28: 212–216.
Harter, L. L. 1939. Influence of light on the length of conidia in certain species ofFusarium; Amer. J. Bot.26: 234–243.
Haskins, R. H. &Weston, W. H. 1950. Studies in the lower Chytridiales. I. Factors affecting pigmentation, growth and metabolism of a strain ofKarlingia (Rhizophlyctis); Amer. J. Bot.37: 739–750.
Houston, B. R. &Oswald, J. W. 1946. The effect of light and temperature on conidium production byHelminthosporium gramineum in culture; Phytopathology36: 1049–1055.
Jorgensen, E. G. &Nielsen, E. S. 1960. Effect of daylight and of artificial illumination on the growth ofStaphylococcus aureus and some other bacteria; Physiol. Plantarum13: 534–538.
Madelin, M. F. 1956. The influence of light and temperature on fruiting ofCoprinus lagopus Fr. in pure culture; Ann. Bot. (N.S.)20: 467–480.
Page, R. M. 1956a. Studies on the development of asexual reproductive structures ofPilobolus; Mycologia48: 206–225.
Page, R. M. 1956b. The effect of nutrition on growth and sporulation ofPilobolus; Mycologia48: 731–739.
Paul, W. R. C. 1929. A comparative morphological and physiological study of a number of strains ofBotrytis cinera, with special reference to their virulence; Trans. Brit. mycol. Soc.14: 118–134.
Plunkett, B. E. 1953. Nutritional and other aspects of fruit body production in pure culture ofCollybia velutipes (Curt.). Fr. Ann. Bot. (N.S.)17: 193–217.
Robbins, W. J. &Hervey, A. 1960. Light and the development ofPoria ambigua; Mycologia52: 231–247.
Robinson, W. 1926. The conditions of growth and development ofPyronema confluens Tul. (P. amphaloides) (Bull. Fuckel.); Ann. Bot.11: 246–272.
Snyder, W. C. &Hansen, H. N. 1941. The effect of light on the taxonomic characters inFusarium; Mycologia33: 580–591.
Sobels, J. C. &Van der Brugge, H. F. J. 1950. Influence of daylight on the fruiting of two orange-yellow pigmented myxomycete plasmodia; Kon. Ned. Akad. Wet.53: 1610–1616.
Timnick, M. B., Lilly, V. G. &Barnett, H. L. 1951. Factors affecting sporulation ofDiapothe phaseolarum var. batatatis from soybean; Phytophathology41: 327–337.
Zachariah, A. T., Hansen, H. N. &Snyder, W. C. 1956. Influence of environmental factors on cultural characters ofFusarium species; Mycologia48: 459–467.
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Yusef, H.M., Allam, M.E. The effect of light on growth and sporulation of certain fungi. Mycopathologia et Mycologia Applicata 33, 81–89 (1967). https://doi.org/10.1007/BF02053439
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DOI: https://doi.org/10.1007/BF02053439