Time Course of Steroid Biosynthesis and Metabolism in Haplopappus heterophyllus.
A single dose of mevalonic acid-2-(14)C was administered simultaneously to 6 Haplopappus heterophyllus plants. They were harvested at intervals ranging from 3 days to 6 months. Four groups of biosynthetically related sterols were found to be radioactive in each plant, and the changes in radioactivity with time were studied. The most striking finding was a radioactive phenolic material present only in the 6-month plant, which had flowered.
Bennett
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RD
Western Regional Research Laboratory, Albany, California.
Lieber
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ER
Heftmann
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E