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The Production and Characterization of Ultraviolet-Induced Mutations in Aspergillus terreus. I. Production of the Mutations

Alexander Hollaender, Kenneth B. Raper and Robert D. Coghill
American Journal of Botany
Vol. 32, No. 3 (Mar., 1945), pp. 160-165
Stable URL: http://www.jstor.org/stable/2437537
Page Count: 6
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The Production and Characterization of Ultraviolet-Induced Mutations in Aspergillus terreus. I. Production of the Mutations
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Abstract

The method for the production of mutations in Aspergillus terreus by ultraviolet radiation is described. The probability of producing "deficient" mutants through chemical changes and the occasional appearance of mutants having increased ability to produce certain compounds is pointed out. Results are given on the per cent of mutation and survival after exposure to λ 2280, 2650, and 2967 Å. The effect of secondary treatment after irradiation and the characteristic appearance of mutations after a relatively small number of spores are killed are reported.

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