The influence of different conditions of illumination on lifespan of Drosophila melanogaster laboratory strains with mutations in genes superoxide dismutase

Light is a crucial environmental factor influencing on living organisms during their whole lives. The genetic mechanisms of light influence on Drosophila melanogaster lifespan are poorly understood. Article is devoted to research of influence of different conditions of illumination(24 h, 12 h, 0 h) on lifespan of Drosophila strains with defect of the genes of the cytoplasmic (Sod1) and mitochondrial (Sod2) superoxide dismutase. It is demonstrated, that individuals of Drosophila with a low ability detoxify free radicals are characterized by a more significant difference between lifespan in the darkness and in the light in compared with individuals of wild type strain. The increase of the photoperiod (from 12 to 24 hours) leads to reduction of lifespan of individuals with mutations in the investigated genes. The given result indicating that the risk of excessive illumination. It was shown the role of superoxide dismutase genes in regulating lifespan of the Drosophila melanogaster fruit fly in response to change of photoperiod.