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. 1967 Jan;42(1):1-5.
doi: 10.1104/pp.42.1.1.

Early effects of illumination on the activity of some photosynthetic enzymes

S Chen  1 , D McMahon, L Bogorad
Affiliations

Early effects of illumination on the activity of some photosynthetic enzymes

S Chen et al. Plant Physiol. 1967 Jan.

Abstract

Leaves of dark-grown corn (Zea mays) were illuminated for periods ranging from 3 minutes to 12 hours. The changes in the activities of ribose-5-phosphate isomerase, ribulose-5-phosphate kinase, and ribulose-1,5-diphosphate carboxylase were followed.The activity of ribose-5-phosphate isomerase did not change significantly until between 12 and 24 hours of illumination. An increase in ribulose-5-phosphate kinase activity occurred after a lag of about 6 hours. The increase in carboxylase activity began after 3 minutes of illumination and increased until after 3 to 6 hours in the light, after which it began to decline. The increases in these enzymes appear to be the result of protein synthesis.

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References

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