Light-Induced Changes in the Protein Pattern Translated in Vivo and in Vitro Accompanying Carotenogenesis in Neurospora crassa and Fusarium aquaeductuum. In: Senger H, editor. Blue Light Effects in Biological Systems. Berlin: Springer Berlin Heidelberg; 1984. pp. 264-9. [DOI: 10.1007/978-3-642-69767-8_29]

Light and the recovery from heat shock induce the synthesis of 38 kDa mitochondrial proteins in Neurospora crassa

The effect of light on the protein synthesis pattern in the mitochondria of Neurospora crassa was examined by in vivo labelling with [35S]-methionine and two-dimensional gel electrophoresis. A brief 5-min illumination induced the rapid and transient synthesis of a 38-kDa protein. White collar-mutants were not stimulated to synthesize this protein by light. A protein of a similar molecular weight and isoelectrical point was synthesized during recovery from heat shock.

The photoregulation of carotenoid biosynthesis in Aspergillus giganteus mut. alba

Aspergillus giganteus mut. alba grown in darkness produced no carotenoids, but illuminated shake cultures accumulated 170 μg·g(-1) dry weight of β-carotene. Maximum carotenoid production occurred in white light of energy fluence rate of 50 W·m(-2). Blue light, but not red light, induced β-carotene formation. A light induction period of 10 h was required for maximum β-carotene synthesis, and this was attained 48 h after illumination. 5-Fluorouracil, actinomycin D and cycloheximide prevented photoinduction of carotenogenesis, indicating that photoregulation is at the transcriptional level. Comparisons of carotenogenic enzyme activities of light- and dark-grown cultures showed that phytoene synthetase, phytoene dehydrogenase and lycopene cyclase were totally photoinduced. Photoinduction of all three carotenogenic enzymes occurred after 12 h illumination. Squalene formation increased some four-fold upon illumination.