Role of Alkaloids in Resistance of Yellow Lupin to Red-Legged Earth Mite Halotydeus destructor

Shaofang Wang, A.Y. Liu, T.J. Ridsdill-Smith, Emilio Ghisalberti

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Eleven varieties of Lupinus luteus were tested in choice and no-choice experiments for their resistance to feeding by the red-legged earth mite (Halotydeus destructor). Three were found to show resistance, and the alkaloid fraction from these varieties strongly deterred mites from feeding. The alkaloid components of the extracts, lupinine, a number of acyl derivatives of lupinine, and sparteine were tested for deterrent activity. Sparteine was the most potent, with significant activity at 0.001% concentration. Quantitation of the levels of nonpolar alkaloids in the cotyledons and leaves of the ii varieties was by gas chromatography-mass spectrometry. An inverse correlation was found between the concentrations of these alkaloids and che damage caused by the mites; varieties with levels
Original languageEnglish
Pages (from-to)429-441
JournalJournal of Chemical Ecology
Volume26
Issue number2
DOIs
Publication statusPublished - 2000

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