Abstract:The role of deoxycorticosterone in the biosynthesis of digitoxigenin was investigated by the simultaneous administration of deoxy[1,2-(3)H(2)]corticosterone and [4-(14)C]progesterone to a Digitalis lanata plant. The biosynthetically formed [(3)H,(14)C]digitoxigenin and deoxy[(3)H,(14)C]corticosterone were isolated and the distribution of the two isotopes in these products was determined. The transformation of progesterone into deoxycorticosterone in vivo was established. The biosynthetic route from progesteron… Show more
“…2) (3). The formation of desoxycorticosterone from progesterone has been observed in Digitalis lanata (12), and administered cortisol was converted to cortisone by Mallotus panieulatus (13). Two representatives of the cardiac genins formed from progesterone are shown in Figure 2: the C23 genin, digitoxigenin, and the C24 genin, hellebrigenin.…”
Section: Biogenetic Functionsmentioning
confidence: 99%
“…Two representatives of the cardiac genins formed from progesterone are shown in Figure 2: the C23 genin, digitoxigenin, and the C24 genin, hellebrigenin. The major biosynthetic pathway is said not to go through desoxycorticosterone (12). The C28 and C29 sterols, which are much more abundant in plants than the C27 sterols, are synthesized from an unsaturated precursor of cholesterol.…”
Sterols have at least three functions in animals: they may act as precursors of other steroids, as hormones and as membrane components. The author advances the hypothesis that sterols have similar functions in plants.
“…2) (3). The formation of desoxycorticosterone from progesterone has been observed in Digitalis lanata (12), and administered cortisol was converted to cortisone by Mallotus panieulatus (13). Two representatives of the cardiac genins formed from progesterone are shown in Figure 2: the C23 genin, digitoxigenin, and the C24 genin, hellebrigenin.…”
Section: Biogenetic Functionsmentioning
confidence: 99%
“…Two representatives of the cardiac genins formed from progesterone are shown in Figure 2: the C23 genin, digitoxigenin, and the C24 genin, hellebrigenin. The major biosynthetic pathway is said not to go through desoxycorticosterone (12). The C28 and C29 sterols, which are much more abundant in plants than the C27 sterols, are synthesized from an unsaturated precursor of cholesterol.…”
Sterols have at least three functions in animals: they may act as precursors of other steroids, as hormones and as membrane components. The author advances the hypothesis that sterols have similar functions in plants.
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