Attempts to demonstrate incorporation of labelled precursors into acetylcholine by Phaseolus vulgaris seedlings |
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Authors: | Elmar Hartmann |
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Affiliation: | Institut für Allgemeine Botanik, Universität Mainz, Saarstraße 21, 6500 Mainz, W. Germany |
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Abstract: | The labelling of acetylcholine was investigated in bean seedlings (Phaseolus vulgaris) and hypocotyl hooks. Labelling could only be found after red light irradiation but not in the dark. Acetate was a much better precursor than choline. Glucose gave no detectable amounts of acetylcholine labelling during 24 hr of incubation. The rate of acetylcholine labelling was higher in whole seedlings than in hypocotyl hook preparations. |
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Keywords: | Leguminosae acetylcholine biosynthesis acetate choline hypocotyl hook red light. |
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