Summary
The plastid pigments — chlorophylls and carotenoids — of the alga,Acetabularia, have been chromatographically separated and identified. These pigments were found to become radio-active during incubations of an isolated chloroplast fraction with14CO2. Specific activity calculations indicate that appreciable amounts of synthesis were occurringin vitro. The phytol and porphyrin moieties of chlorophyll a were both radioactive; thus the pigments were being formed completely from recent photosynthetic products. A comparison of the incorporation of14CO2 into plastid pigmentsin vivo andin vitro suggests that the isolated chloroplasts form the pigments at their normalin vivo rates.
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Moore, F.D., Shephard, D.C. Biosynthesis in isolatedAcetabularia chloroplasts II. Plastid pigments. Protoplasma 92, 167–175 (1977). https://doi.org/10.1007/BF01279456
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DOI: https://doi.org/10.1007/BF01279456