Light effects in yeast: evidence for participation of cytochromes in photoinhibition of growth and transport in Saccharomyces cerevisiae cultured at low temperatures.

Journal of Bacteriology
S UłaszewskiL N Edmunds

Abstract

Visible light of moderate intensity inhibits growth, respiration, protein synthesis, and membrane transport in bakers' yeast and has a deleterious effect on membrane integrity. The results of this study indicate that these effects require the presence of cytochromes b and a/a(3). The light sensitivities of growth rate and [(14)C]histidine uptake in wild-type rho(+) Y185 and D225-5A strains of Saccharomyces cerevisiae were compared with those in a variety of mutants lacking cytochrome b or a/a(3) or both; a close correlation was found between the presence of these respiratory pigments and photosensitivity. Thus, strain TL5-3C, a nuclear petite lacking cytochromes b, a, and a(3), was resistant to light; strain GL5-6A, another nuclear petite having reduced amounts of cytochromes a and a(3), was partially resistant; strains MB127-20C and MB1-6C, nuclear petites lacking only cytochrome b, were also only partially resistant to light; whereas mutants containing all three cytochromes but having their respiratory chain either nonfunctional (strain ZK3-6B) or uncoupled (strain 18-27/t12) were fully sensitive to light. Finally, an equal-energy, broad-band action spectrum for the light inhibition of growth and transport indicated that blue...Continue Reading

References

Mar 22, 1976·Biochemical and Biophysical Research Communications·B B AggarwalL Packer
Jul 1, 1977·Photochemistry and Photobiology·H NinnemannW L Butler
Oct 1, 1978·Journal of Bacteriology·S UlaszewskiV P Cirillo
May 1, 1977·Journal of Bacteriology·J R Woodward, V P Cirillo
Apr 1, 1976·Journal of Bacteriology·A L KochH E Kubitschek
Jun 30, 1970·Biochimica Et Biophysica Acta·H NinnemannB L Epel
Jan 1, 1974·Molecular & General Genetics : MGG·S Ulaszewski, T M Lachowicz
Jan 15, 1968·Biochimica Et Biophysica Acta·B Guerin, R Jacques

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Citations

Aug 17, 2001·Journal of Biological Rhythms·T Roenneberg, M Merrow
Dec 4, 2013·Proceedings of the National Academy of Sciences of the United States of America·James Brian RobertsonCarl Hirschie Johnson
Nov 18, 2020·BMC Biology·Mikael MolinAnders Blomberg
Oct 30, 2020·Yeast·David FigueroaFrancisco Salinas
Nov 23, 2017·Photochemistry and Photobiology·Michael R Hamblin

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