Peculiarities of the mutagenic effect of γ-rays and N-nitrosomethylurea in different periods of the DNA synthesis phase
DOI:
https://doi.org/10.7124/bc.0001B6Abstract
The sensitiveness of the DNA synthesis phase and its different periods to the mutagenic action of γ-irradiation in combination with 5-bromo-2-deoxyuridine (BUDR) and N-nitro-somethylurea was studied in 5-fluorodesoxyuridine-synchronized cells of winter wheat seedlings. In experiments with irradiation the radiosensitizing effect of BUDR in the early S phase was observed. This effect is not found in the middle and late S phases. Such differences in the sensitiveness of different periods of the S phase to the mutagenic action were absent in the experiment with NMU.References
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