Papaver somniferum latex vacuoles were separated into two discrete fractions–‐the 900 Xg and the 1100 Xg vacuoles. The two vacuolar populations were assayed over the three‐week period of capsule maturation. Estimations of the anions sulphate, meconate and chloride, as well as the inorganic cations K+,Na+, Mg2+ and Ca2+, were made, together with measurements of the alkaloids morphine, codeine, thebaine, papaverine and noscapine. A correlation between alkaloids and organic acids has been established which supports the proposed “ion trap” mechanism proposed for alkaloid sequestration in poppy latex vacuoles.
These different ways of influencing biosynthetic activities in an individual or between different pathways are described for some strains of Ciav/ceps or Pen/c/li/urn as well as the cell cultures of C/nchona, Catharanthus, or N/ge/la. There are not only different kinds of inhibition or activation in the aromatic pathway (Clav/ceps, Pen/c/li/urn, plant cell cultures) but also a closer interaction between the biosynthesis of aromatic amino acids and the alkaloid formation (Cia v/ceps: -;Pen/c/li/urn: +). First of all, the positive feedback effect of benzodiazepine alkaloids on enzymes of the aromatic pathway of Pen/c/i//urn cyciop/urn is exciting in these complex systems of interaction between different areas of metabolism (1).
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