Adaptive Response to Dominant Lethality of Mature (Class A) and Immature (Class B) Oocytes ofD. Melanogasterto Low Doses of Ionizing Radiation: Effects in Repair-proficient (yw) and Repair-deficient Strains (Mei 41D5and Mus 302D1)
- 1 January 1991
- journal article
- research article
- Published by Taylor & Francis in International Journal of Radiation Biology
- Vol. 59 (1), 175-184
- https://doi.org/10.1080/09553009114550161
Abstract
Mature oocytes (class A) and immature oocytes (class B) from a repair-proficient yw strain and two repair-deficient strains (mus 302D1 and mei 41D5) were initially X-irradiated with 0·02 Gy and subsequently treated at various time intervals with 2 Gy. They were tested for dominant lethality (early and late death). For each strain and stage the observed values were below those expected on the basis of additivity of the effects of the two irradiations given separately. These results indicate the existence of a repair-stimulating effect of low doses for the repair-deficient strains as well as for the highly radiosensitive mature oocytes. This ‘adaptive response’ was highest for mei 41, lower for yw and lowest for mus 302, and also involved ‘late death’ lethality (real dominant mutations). The finding that the two repair-deficient strains showed significant differences in normal dominant lethality, as well as in radiosensitivity and adaptive response, is consistent with dissimilarities in the repair defect.Keywords
This publication has 14 references indexed in Scilit:
- A cell-cycle stage-related chromosomal X-ray hypersensitivity in larval neuroblast of Drosophila mei-9 and mei-41 mutants suggesting defecting DNA double-strand break repairMutation Research, 1989
- Adaptive response of human lymphocytes to low-level radiation from radioisotopes or X-raysMutation Research, 1989
- Resistance and cross-resistance to chromosome damage in human blood lymphocytes adapted to bleomycinMutation Research, 1989
- Very low doses of X-rays can cause human lymphocytes to become less susceptible to ionizing radiationMutagenesis, 1987
- Adaptive Response of Human Lymphocytes to Low Concentrations of Radioactive ThymidineScience, 1984
- Repair of double-strand DNA breaks in DrosophilaMutation Research, 1982
- Effects of a small x-ray exposure to Drosophila melanogaster females on the recovery of genetic damage from x-irradiated malesMutation Research, 1979
- “Benefit” and “Harm” from Exposure of Vertebrate Sperm to Low Doses of Ionizing RadiationHealth Physics, 1973
- The effect of oxygen and nitrogen post-treatments on the survival of irradiated stage-14 oocytes and a possible basis for sensitivity differences between stage-7 and stage-14 oocytes of Drosophila melanogasterMutation Research, 1969
- Split-dose experiments with stage-14 oocytes of Drosophila melanogasterMutation Research, 1968