Heavy-ion effects on yeast: survival and recovery in vegetative cells of different sensitivity
Description
Wild-type haploid and diploid and radiosensitive haploid yeast strains were exposed to beams of Ar, Kr, Xe, Pb, and U ions of different energies (0.3 MeV/u less than or equal to E/m less than or equal to 8.5 MeV/u) obtained from the UNILAC, Gesellschaft fur Schwerionenforschung (GSI), Darmstadt, Federal Republic of Germany. The LET/sub infinity/ ranged from 2000 to 14,000 keV/μm. The colony-forming ability after immediate plating and after recovery from potentially lethal damage was investigated. The effective inactivation cross sections, calculated from the terminal slopes of the survival curves, were found to increase with Z2/sub eff//#betta#2 at constant #betta# and to increase with #betta# at constant Z2/sub eff//#betta#2. Effects of the central and peripheral regions of the particle tracks could be considered separately. For very heavy particles delayed plating recovery was found to increase with increasing particle speed
Additional details
Publishing Information
- Journal Title
- Radiat. Res.
- Journal Volume
- 92
- Journal Issue
- 1
- Series
- Radiat. Res.
- Journal Page Range
- 30-46
- ISSN
- 0033-7587
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 14771670
- Subject category
- S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
- Descriptors DEI
- ALPHA PARTICLES; ARGON 40 BEAMS; BIOLOGICAL RADIATION EFFECTS; CROSS SECTIONS; ION BEAMS; KRYPTON 84 BEAMS; LEAD 208 BEAMS; MUTANTS; RADIOSENSITIVITY; RBE; SACCHAROMYCES CEREVISIAE; SURVIVAL CURVES; UNILAC; URANIUM 238 BEAMS; X RADIATION; XENON 132 BEAMS
- Descriptors DEC
- ACCELERATORS; BEAMS; BIOLOGICAL EFFECTS; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; FUNGI; HEAVY ION ACCELERATORS; HELIUM IONS; IONIZING RADIATIONS; IONS; LINEAR ACCELERATORS; MICROORGANISMS; PLANTS; RADIATION EFFECTS; RADIATIONS; SACCHAROMYCES; YEASTS