The Effect of Light on Carotenoid Synthesis in Corynebacterium 7E1C

• Main Author: Endicott, George R.
• Other Authors: Kester, Andrew S.
• Format: Others
• Language: English
• Published: North Texas State University 1977
• Subjects: photo-induced carotenogenesis; light; protein synthesis inhibitors; light "mimicking" chemicals; Carotenoid metabolism.; Light > Physiological effect.; Corynebacterium species strain 7E1C.; Proteins > Synthesis.
• Online Access: https://digital.library.unt.edu/ark:/67531/metadc504507/

The effects of light, light "mimicking" chemicals, and protein synthesis inhibitors on the photo-induced carotenogenesis of Corynebacterium 7EIC were studied. Changes in the dosage of fluorescent light applied to dark grown cells showed a dose related carotenogenic response. Maintaining the same dosage but varying the wavelength of monochromatic light revealed that light with a wavelength of 280 to 450nm was responsible for photo-induction. It further showed a peak of photo-induction between the wavelengths of 370 and 430nm. The light "mimicking" chemicals antimycin A and p-Chloromercurybenzoate were shown to have no light "mimicking" effects. The transcriptional inhibitor of protein synthesis actinomycin D partially inhibited, and chloramphenicol a translational inhibitor, completely inhibited photo-induced carotenogenesis.