Alkaloid metabolism in thrips-Papaveraceae interaction: recognition and mutual response

Journal of Plant Physiology
Ingeborg SchützWerner Roos

Abstract

Frankliniella occidentalis (Pergande), the Western Flower Thrips (WFT), is a polyphagous and highly adaptable insect of the order Thysanoptera. It has a broad host range but is rarely found on Papaveraceae, which might be due to deterrent effects of alkaloids present in most species of this family. In order to test the adaptive potential of WFT, we investigated its interaction with two Papaveraceae offered as sole feeding source. We found that WFT are able to live and feed on leaves of Eschscholzia californica and Chelidonium majus. Both plants respond to thrips feeding by the enhanced production of benzophenanthridine alkaloids. Furthermore, cell cultures of E. californica react to water insoluble compounds prepared from adult thrips with enhanced alkaloid production. During feeding, WFT take up benzophenanthridine alkaloids from either plant and from an artificial feeding medium and convert them to their less toxic dihydroderivatives. This was shown in detail with sanguinarine, the most cytotoxic benzophenanthridine. A similar conversion is used in plants to prevent self-intoxication by their own toxins. We conclude that WFT causes a phytoalexin-like response in Papaveraceae, but is able to adapt to such host plants by detoxi...Continue Reading

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Citations

Feb 26, 2016·Frontiers in Plant Science·Tugba GurkokTurgay Unver
Mar 1, 2018·Journal of Experimental Botany·Merel SteenbergenColette Broekgaarden
Nov 13, 2019·Neotropical Entomology·A Peñalver-CruzB Lavandero
Jan 9, 2021·Annual Review of Entomology·William D J KirkDavid A J Teulon

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