Abstract
IT has recently been reported by Takeichi1 that the effect of ultra-violet light in inducing somatic segregation in heterozygous diploids of Aspergillus sojae is not altered by subsequent exposure of the irradiated conidia to visible light. As with other micro-organisms, it was found that the viability of the ultra-violet irradiated conidia was significantly increased by the visible light treatment, and it was therefore concluded that the effect of ultra-violet light in inactivating diploid conidia may be distinct from that which induces somatic segregation. This result is not the same as that found in a similar experiment with a heterozygous diploid of Ustilago maydis.
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References
Takeichi, C., J. Gen. App. Microbiol., 7, 89 (1961).
Holliday, R., Genet. Res., 2, 231 (1961).
Holliday, R., Genet. Res., 2, 204 (1961).
Landen, E. W., J. Cell Comp. Physiol., 14, 217 (1939).
Novick, A., and Szilard, L., Proc. U.S. Nat. Acad. Sci., 35, 591 (1949).
Kafer, E., Nature, 186, 619 (1960).
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HOLLIDAY, R. Effect of Photoreactivation on Ultra-violet-induced Segregation of Heterozygous Diploids. Nature 193, 95–96 (1962). https://doi.org/10.1038/193095b0
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DOI: https://doi.org/10.1038/193095b0
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