Summary
By using the UV-sensitive yeast mutant uvs-1 (Nakai and Matsumoto, 1967) as starting material, a series of hypersensitive strains have been isolated. Two of these strains are described here. In addition to being hyper-UV-sensitive, they are also sensitive to gamma radiation and one is sensitive to visible light; a characteristic which was first observed as an apparent failure to photoreactivate. Both strains are cytoplasmic petites. The value of this method of isolating strains which have progressively lost their dispensible repair functions is discussed.
Similar content being viewed by others
References
Brendel, M., Khan, N. A., Haynes, R. H.: Common steps in the repair of alkylation and radiation damage in yeast. Molec. Gen. Genetics 106, 289–295 (1970).
Cox, B. S., Parry, J. M.: The isolation, genetics and survival characteristics of ultraviolet light-sensitive mutants in yeast. Mutat. Res. 6, 37–55 (1968).
Elkind, M. M., Sutton, H.: Lethal effects of visible light in a mutant strain of haploid yeast I: General dependencies. Arch. Biochem. 72, 84–95 (1957a).
—: Lethal effects of visible light in a mutant strain of haploid yeast II: Absorption and action spectra. Arch. Biochem. 72, 96–111 (1957b).
Kilbey, B. J., Smith, S. M.: Similarities between a UV-sensitive mutant of yeast and bacterial mutants lacking excision-repair ability. Molec. Gen. Genetics 104, 253–257 (1969).
Nakai, S., Matsumoto, S.: Two types of radiation sensitive mutants in yeast. Mutat. Res. 4, 129–136 (1967).
Snow, R.: Mutants of yeast sensitive to ultraviolet light. J. Bact. 94, 571–575 (1967).
Zimmerman, F. K.: Sensitivity to methylmethanesulphonate and nitrous acid of ultraviolet light-sensitive mutants in Saccharomyces cerevisiae. Molec. Gen. Genetics 102, 247–256 (1968).
Author information
Authors and Affiliations
Additional information
Communicated by E. Witkin
Rights and permissions
About this article
Cite this article
Brown, A.M., Kilbey, B.J. Hyper-UV-sensitive yeast I: Isolation and properties of two such mutants. Molec. Gen. Genet. 108, 258–265 (1970). https://doi.org/10.1007/BF00283356
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00283356