[Radiobiological effects irradiated by fast (0.85 meV) neutrons in yeast cells Saccharomyces cerevisae].
Radiobiological effects of homozygous Saccharomyces cerevisae strains of different ploidy from haploid to hexaploid were studied. Radiation (gamma-radiation of 60Co and fast 0.85 MeV neutrons) inactivation showed the minimum of resistance of haploid strain, the maximum of resistance of diploid strain and a decrease of resistance with further increase genome ploidy. All studied strains (except haploid) have the same capability to recovery in non-nutrient media during incubation at postradiation period by gamma-radiation and fast neutrons damage. Also it was found that values relative biological effectiveness (RBE) of fast neutrons for lethality are 2.6-2.7 and is independents from ploidy (2 and higher).
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D015825:Chromosomes, Fungal / Q000528:radiation effects; D005214:Fast Neutrons; D005720:Gamma Rays; D006238:Haploidy; D011003:Ploidies; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects*