Abstract
The effect of isologous DNA on the course of postirradiation reparation of meristematic cells ofVicia faba primary roots was studied in detail. A considerable interest was devoted to determinations of fundamental qualitative and quantitative conditions of the above effect of isologous DNA. Main criteria of the effect were both mitotic activity of irradiated cellular population and dynamics of chromosome aberrations induced by radiation. One set of experiments compared the course of reparation as occurred in regard to applied dose of ionizing radiation in native isologous DNA, DNA denaturated by heat and degraded by DNAase, and post-irradiation reparation of induced damages was favorably affected by native isologous DNA only. Another set of results evaluated the dependence of positive reparative effect of native isologous DNA on the length of the molecule demonstrating that in the process of reparation the presence of a complete DNA macromolecule was not essential. The last experimental group was focused on observations on the dependence of the rate of native isologous DNA effect on concentration of applied solution of the macromolecule.
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Claims 2
Claim · model-written summary
Native isologous DNA favored repair of radiation damage in Vicia faba root meristems, unlike heat-denatured or DNase-degraded DNA.
- Taxon
- Vicia faba
Vicia fabae1 - Treatment
- native isologous DNAe0
- Outcome
- post-irradiation reparation of induced damagese0
- Direction
- favorably affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“post-irradiation reparation of induced damages was favorably affected by native isologous DNA only.”
e1“meristematic cells ofVicia faba primary roots”
Claim · model-written summary
A complete DNA macromolecule was not essential for the repair effect.
- Taxon
- Vicia fabaVicia fabae1
- Outcome
- presence of a complete DNA macromolecule was not essentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the process of reparation the presence of a complete DNA macromolecule was not essential.”
e1“meristematic cells ofVicia faba primary roots”