Sensitization ofAspergillus flavusspores to gamma radiation by halogens

摘要

Survival curves for spores ofAspergillus flavusLink var.columnarisRaper and Fennell were obtained after their irradiation with gamma rays in the presence of Na+, K+, and Ca2+halogens. Halogens of Na+and K+sensitized the spores to the radiation and enhanced sensitization occurred as the dose of radiation was increased. Halogens of Ca2+protected the spores against a radiation dose of 25ensp;krad but at higher doses although CaCl2was protective, CaBr2and CaI2were radiosensitizers, with CaI2the most efficient radiosensitizer.