Hydrolysis of Glycosidically Bound Volatiles from Apple Leaves (Cv. Anna) byAspergillus nigerβ-Glucosidase Affects the Behavior of Codling Moth (Cydia pomonellaL.)

Autor: Ben-Ami Bravdo, Oded Shoseyov, Haim Reuveny, Shu Wei
Rok vydání: 2004
Předmět:
Zdroj: Journal of Agricultural and Food Chemistry. 52:6212-6216
ISSN: 1520-5118
0021-8561
DOI: 10.1021/jf0495789
Popis: Glycosidically bound volatiles released from apple leaf extracts (cv. Anna) were analyzed by solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) and their behavioral effects on codling moth (CM) adults were evaluated in cage bioassays. The levels of 1-octanol, linalool, geraniol, benzyl alcohol, methyl salicylate, (2R,5R)-theaspirane, and (2S,5R)-theaspirane were significantly increased in the leaf extracts containing the Aspergillus niger beta-glucosidase (BGL1) compared to the extracts containing the glucoimidazole. The attractiveness of individual compounds to CM adults was found in the following decreasing order: methyl salicylate and mixture of two theaspirane isomers, followed by linalool and benzyl alcohol. Geraniol was found to be repellent to CM adults. The addition of geraniol (39.4 ng mL(-1)) to any of the individual volatiles or to a mixture of these attractants eliminated their attractiveness. Our data suggest the possible application of geraniol as a repellent and methyl salicylate or theaspiranes as attractants for the integrated control of CM in apple orchards.
Databáze: OpenAIRE