Quinolizidine alkaloid status of Styphnolobium and Cladrastis (Leguminosae) |
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Authors: | Geoffrey C Kite R Toby Pennington |
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Institution: | a Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK b Royal Botanic Garden Edinburgh, 20a Inverleith Row, Edinburgh EH3 5LR, UK |
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Abstract: | Reports of quinolizidine alkaloids in Styphnolobium Schott and Cladrastis Raf. (Leguminosae) conflict with their position in recent molecular phylogenies because they are not members of a major clade of quinolizidine alkaloid-accumulating taxa. The alkaloid status of these two genera was therefore re-investigated using gas chromatography–mass spectrometry. Quinolizidine alkaloids could not be detected in extracts of leaves, flowers or seeds of S. japonicum (L.) Schott, nor in leaves of S. affine (Torrey & A. Gray) Walp., C. delavayi (Franch.) Prain, C. kentukea (Dum.-Cours.) Rudd or C. platycarpa Mak. In contrast, Calia secundiflora (Ortega) Yakovlev, also currently placed outside the major clade of quinolizidine alkaloid-producing genera in molecular phylogenies, was confirmed to accumulate a range of quinolizidine alkaloids. |
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Keywords: | Styphnolobium Cladrastis Calia Sophora Leguminosae Quinolizidine alkaloids Chemosystematics Gas chromatography–mass spectrometry |
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