[Fractionated UV-C irradiation effects on the changes of transcribed and satellite DNA methylation profile and unstable chromosomal aberration yield].

Interaction between changes of functionally different DNA methylation pattern and chromosomal aberration yield under fractionated UV-C exposure at the doses-of 6.2-9 kJ/m2 have been investigated. Two ways of meristematic tissue renewal after irradiation have been revealed on the grounds of statistical analysis.

[Corn plant DNA methylation pattern changes upon fractional UV-C irradiation].

Relationship of changes of methylation pattern of functionally different parts of DNA and chromosomal aberration yield was studied at the conditions of the fractionating of UV-C irradiation. Combination of restriction analysis (Hpall, MspI, MboI enzymes) with the subsequent raising of PCR (internal transcribed space ITS1, 1TS4 and inter simple sequence repeat - ISSR, 14b primers) was used. The got results testify to the changes in methylation pattern of satellite and transcription active part of DNA atan irradiation in the mode of fractionating and depending on fraction time ranges.

[The dynamics of P-mobile Drosophila melanogaster element activation in controlled terms of protracted irradiation].

Verification of hypothesis about mobile element activation radiosensitivity change in the conditions of the prolonged irradiation was the research goal. The estimation of orientation of these changes depending on the accumulated dose and their characteristic times were conducted. Two Drosophila melanogaster strains (Canton-S and P-lines) for 20 generations were in the controlled terms of chronic irradiation with 3-dose rate (1.

[The effects of the distance interaction of the exposed and unexposed plants].

The effects of the distance interaction between the irradiated and unirradiated corn plants in the conditions of water culture were investigated. The change of biological and radiobiological reactions (radioadaptation) is shown at the helped unexposed plants, and also oppressing, as compared to the exposed homogeneous culture, similar indexes at the exposed plants from mixed culture.