Abstract
PHOTOREPAIR in Neurospora conidia has been shown to be an enzyme process which operates on both lethal and mutagenic damage induced by ultra-violet light1,2. When irradiated conidia are incubated in the dark they lose their ability to respond to subsequent exposure to photorepairing light. This loss is dependent on temperature and can be much reduced at temperatures approaching 0° C. It occurs as well on the surface of growth medium as in water. The main features of the phenomenon are shown in Fig. 1. The results here refer to survival, but essentially the same results were obtained for adenine reversion induced by ultra-violet light (Kilbey, unpublished experiments).
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