Terpenes and polyacetylenes from cultivated Artemisia granatensis boiss (Royal chamomile) and their defensive properties


Artemisia granatensis, an endemic endangered plant species from Sierra Nevada (Spain) has been successfully cultivated in artificial systems (plants in artificial soil and transformed in vitro roots) to generate enough plant biomass (aerial and root) to allow for its chemical and biological study and at the same time to provide with methods for the sustainable production of the plant and its metabolites. A eudesmanolide (17) along with six sesquiterpenes (11–16), nine monoterpenes (2–10), one nor-monoterpene (1), three acetylenic spiroacetal enoleters (18–20) and one coumarin (21) have been identified from the aerial plant ethanolic extract. Acetylenic spiroacetal enoleters 18–19 and coumarins 21–23 have been isolated from the transformed root ethanolic extract. These extracts and some isolated compounds or mixtures of them have been tested for their insect antifeedant effects against Spodoptera littoralis, Myzus persicae and Rhopalosiphum padi. Significant antifeedant properties were determined for the aerial plant extract, spiroacetals 19–20 and secoguaianolides 13 + 14 and 16.Thanks to Junta de Andalucía (Excellence Project P08-FQM-3596) by the subvention of this research and D. Mario Ruiz Girela (Sierra Nevada National Park) by the transfer of some specimens of A. granatensis. A. G. Portero thanks a JAE-predoctoral grant CSIC.Peer Reviewe

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oai:digital.csic.es:10261/179032Last time updated on 4/18/2019

This paper was published in Digital.CSIC.

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