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[Mutagenesis, antimutagenesis and the cellular regulatory system]
Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
|January 1, 1995
Summary
This study investigated how cellular regulators affect mutagenesis in Crepis capillaris seeds. Low concentrations of modifiers like caffeine reduced mutations, while high concentrations increased them, showing a dose-dependent effect.
Area of Science:
- Plant molecular biology
- Genetics
- Cellular regulation
Background:
- Cellular regulatory systems play a crucial role in maintaining genetic stability.
- Understanding mutagenesis and antimutagenesis is vital for genetic research and risk assessment.
Purpose of the Study:
- To investigate the impact of modifying cellular regulatory systems on mutagenesis and antimutagenesis.
- To determine the dose-dependent effects of various chemical modifiers on induced mutation rates.
Main Methods:
- Experiments were conducted on Crepis capillaris seeds.
- Chemical modifiers including adenosine, theophylline, cyclic adenosine monophosphate (cAMP), caffeine, and colchicine were applied.
- Mutation levels and endogenous cAMP were quantified.
Main Results:
- Low concentrations of modifiers decreased induced mutation levels, acting as antimutagens.
- High concentrations of the same modifiers increased induced mutation levels, acting as mutagens.
- A significant correlation was observed between endogenous cAMP levels and the rate of antimutagenesis.
Conclusions:
- The cellular regulatory system significantly influences mutagenesis and antimutagenesis.
- Chemical modifiers exhibit dose-dependent effects on mutation rates.
- Endogenous cAMP levels are linked to the plant's antimutagenic response.