ISHS Acta Horticulturae 331: WOCMAP I - Medicinal and Aromatic Plants Conference: part 3 of 4
INFLUENCE OF NITROGEN ON THE ALKALOID CONTENT OF DATURA STRAMONIUM |
| Authors: | K. Demeyer, R. Dejaegere |
| Abstract:
Plants can absorb their most limiting element under the form of NO3- as well as under the form of NH4+. Both have advantageous and disadvantageous properties, depending on soil and climatic conditions and on the plant species considered. Nevertheless, when taken up as NH4+ all nitrogen is built into amino acids in the roots before it is translocated to the upper plant parts. The NO3- -form can be transported as such, depending on the NO3- - reduction potential of the roots. The economic important alkaloid, hyoscyamine, is synthesized in the roots of Datura stramonium L. (Romeike 1961) from the amino acid precursors Phe and Orn (and related amino acids) (Leete, 1979). We investigated whether the N-form used in the mineral nutrition of these plants could influence their alkaloid synthesis. | |
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