Skip to content
BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Triterpenoids as Major Components of the Insect-Trapping Glue of Roridula Species

  • Bernd R. T. Simoneit , Patricia M. Medeiros and Eckhard Wollenweber EMAIL logo

Roridula dentata and R. gorgonias, two South African plants that were formerly believed to be carnivorous, exhibit an extremely sticky exudate at the tips of secretory trichomes. Unlike the trapping mucilage of Droseraceae, it does not consist of acidic polysaccharides. The Roridula trapping glue was found to be a mutual solution of mainly dihydroxytriterpenoids, instead. All samples contain two isomers of ring A dihydroxyolean-12-enes and dihydroxyurs- 12-enes. The difference between the two species is the additional presence of taraxeradiol in the glue of R. gorgonias. The absolute chemical structures of the reported triterpenoids still need confirmation.

Received: 2008-4-18
Revised: 2008-5-27
Published Online: 2014-6-2
Published in Print: 2008-10-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Downloaded on 22.9.2023 from
Scroll to top button