title: Light effects in yeast: relation between the respiratory deficiency and light sensitivity in yeast.
abstract: Visible light of 5,000 lux intensity has been shown to photokill yeast cells at 12 degrees C. In the present report some of isogenic respiratory deficient mit- and nuclear mutants were compared for their sensitivity to light. No close correlation between the cytochromes spectra and light resistance was observed. Although, the nuclear and rho- mutants which lack cytochromes a + a3 and b are as a rule light resistant. Photokilling effect in yeast seems to be dependent both on the sufficiency of respiratory chain and on protein synthesis probably on cytoplasmic level.
mesh_terms: D046508:Culture Techniques; D003580:Cytochromes / Q000172:deficiency / Q000378:metabolism; D005838:Genotype; D008027:Light / Q000009:adverse effects; D009154:Mutation; D010101:Oxygen Consumption; D015003:Yeasts / Q000235:genetics / Q000254:growth & development / Q000502:physiology*
chemical_list: D003580:Cytochromes