Figure 3.
Differential UV sensitivity of strains deficient in the G2 DNA damage checkpoint. Conidiospores (250 per plate, two plates per strain) of wild-type and nimXcdc2AF, uvsB505, uvsD308, and uvsH4 mutant strains were spread on YAG plates and either immediately UV irradiated as indicated (A) or incubated at 32°C for 4.5 h to allow spore germination and then UV irradiated (B). After irradiation the plates were incubated at 32°C for 2 d to allow colony formation. The percent survival after DNA damage by UV irradiation is expressed as the percentage of colonies produced in the absence of treatment.