“…Schroter and Neumann reported that the administration of a-N-methylJ4C-ornithine to a N. rustica root culture yielded nicotine with activity on the N-methyl group whereas 6-N-methyl-14C-ornithine was a much poorer precursor of the N-methyl group of nicotine (211). These results have now been shown to be invalid (212) by the administration of authentic a-N-methyl-14C-ornithine-2-14C and 6-N-methyl-14C-ornithine-2J4C to N. tabacum plants grown in hydroponic solutions.…”
Section: Origin Of T H E Pyrroli1)ine Ring Of Nicotinementioning
“…Schroter and Neumann reported that the administration of a-N-methylJ4C-ornithine to a N. rustica root culture yielded nicotine with activity on the N-methyl group whereas 6-N-methyl-14C-ornithine was a much poorer precursor of the N-methyl group of nicotine (211). These results have now been shown to be invalid (212) by the administration of authentic a-N-methyl-14C-ornithine-2-14C and 6-N-methyl-14C-ornithine-2J4C to N. tabacum plants grown in hydroponic solutions.…”
Section: Origin Of T H E Pyrroli1)ine Ring Of Nicotinementioning
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