BIOSYNTHESIS OF MONOTERPENOIDS IN HIGHER PLANTS. LOCALIZATION OF RADIOACTIVITY IN FAVOR OF THE ISOPENTENYL PYROPHOSPHATE-DERIVED MOIETY OF MONOTERPENOIDS IN THE UPTAKE OF ALANINE-2-14C

Abstract
Uptake of DL-alanine-2-14C to the twigs of Cinnamomum Camphora Sieb. and Pelargonium roseum Bourbon resulted in the preferential location of radioactivity on the isopentenyl pyrophosphate-derived moiety of linalool, geraniol, and citronellol, in opposition to incorporations of leucine and valine into these monoterpenoids. The biosynthetic pathway of the monoterpenoids from the amino acid is discussed.

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