Glycolic Acid Labeling During Photosynthesis with 14CO2 and Tritiated Water
- 1 October 1966
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 41 (8) , 1272-1275
- https://doi.org/10.1104/pp.41.8.1272
Abstract
Chlorella pyrenoidosa were allowed to photosynthesize for short periods of time in the presence of C14O2 and TO. Analysis of tritium and C14 labeling of photosynthetic inter-mediate compounds showed that the T C14 ratio of glycolic acid was comparable to that of intermediate compounds of the photosynthetic C reduction cycle when photosynthesis was performed in nearly 100% oxygen and only slightly higher under steady-state conditions. It is concluded that formation of labeled glycolic acid as a consequence of its proposed hydrogen transport role in photosynthesis is quantitatively of limited importance compared to the net synthesis of glycolic acid from CO2.Keywords
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