TY - JOUR
T1 - Role of Alkaloids in Resistance of Yellow Lupin to Red-Legged Earth Mite Halotydeus destructor
AU - Wang, Shaofang
AU - Liu, A.Y.
AU - Ridsdill-Smith, T.J.
AU - Ghisalberti, Emilio
PY - 2000
Y1 - 2000
N2 - 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
AB - 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
U2 - 10.1023/A:1005413606680
DO - 10.1023/A:1005413606680
M3 - Article
SN - 0098-0331
VL - 26
SP - 429
EP - 441
JO - Journal of Chemical Ecology
JF - Journal of Chemical Ecology
IS - 2
ER -