Abstract
Dormant sporangiospores of Phycomyces blakesleeanus were activated by Cs-137 gamma rays. After a dose of about 300 krad, between 80 and 90% of the spores germinated normally. However, further development of the mycelium was inhibited. Even with dry spores a partial activation was obtained. Activation by gamma rays was not accompanied by an increase in trehalase activity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Van Assche, J. A., Carlier, A. R., Dekeersmaeker, H. I.: Trehalase activity in dormant and activated spores of Phycomyces blakesleanus. Planta (Berl.) 103, 327–333 (1972)
Bergman, K., Burke, P. V., Cerda-Olmedo, E., David, C. N., Delbrück, M., Foster, K. W., Goodell, E. W., Heisenberg, M., Meissner, G., Zalokar, M., Dennison, D. S., Shropshire, W., Jr., Phycomyces. Bact. Rev. 33, 99–157 (1969)
Borchert, R.: Über die Azetat-Aktivierung der Sporangiosporen von Phycomyces blakesleeanus. Beitr. Biol. Pflanz. 38, 31–61 (1962)
Cotter, D. A.: Spore germination in Dictyostelium discoideum. I. The thermodynamics of reversible activation. J. theor. Biol. 41, 41–51 (1973)
Delvaux, E.: Some aspects of germination induction in Phycomyces blakesleeanus by an ammonium acetate pretreatment. Arch. Mikrobiol. 72, 175–181 (1973)
Furch, B.: Über die Funktion des Vorlaufes bei Untersuchungen des Phänomens der Wärmeaktivierung von Phycomyces blakesleeanus. Biochem. Phys. Pflanz. (BPP) 166, 363–365 (1974)
Gould, G. W., Ordal, Z. J.: Activation of Bacillus cereus spores by γ-rays. J. gen. Microbiol. 50, 77–84 (1968)
Halbsguth, W., Rudolph, H.: Untersuchungen über die Wärmeaktivierung der Sporangiosporen von Phycomyces blakesleeanus. Arch. Mikrobiol. 32, 296–308 (1958)
Hashimoto, Y.: Effect of radiation on the germination of spores of Dictyostelium discoideum. Nature (Lond.) 231, 316–317 (1971)
Hashimoto, Y., Yanagisawa, K.: Effect of radiation on the spore germination of the cellular slime mold Dictyostelium discoideum. Radiat. Res. 44, 649–659 (1970)
Khoury, A. T., Deering, R. A., Lewin, G., Altman, G.: Gammaray-induced spore germination of Dictyostelium discoideun. J. Bact. 104, 1022–1023 (1970)
Levinson, H. S., Hyatt, M. T.: Some effects of heat and ionizing radiation on spores of Bacillus megaterium. J. Bact. 80, 441–451 (1960)
Roberts, T. A.: Resistance of spores of Clostridium welchii. In Elimination of harmful organisms from food and feed by irradiation (Panel proceedings series), pp. 95–100. Vienna: International Atomic Energy Agency 1968
Sommer, L., Halbsguth, W.: Grundlegende Versuche zur Keimungsphysiologie von Pilzsporen. Forsch.-Ber. Wirtsch.- und Verkehrsminist. Nordrh.-Westf., Nr. 411 (1957)
Sussman, A. S.: The prevalence and role of dormancy. In: The bacterial spore (G. W. Gould, A. Hurst, eds.), pp. 1–38. New York: Academic Press 1969
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Van Assche, J.A., Carlier, A.R. & Van Tieghem, L.L.C. The effect of gamma radiation on breaking of dormancy in Phycomyces spores. Arch. Microbiol. 113, 95–97 (1977). https://doi.org/10.1007/BF00428587
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00428587