β-Thujone and Its Derivatives Modify the Probing Behavior of the Peach Potato Aphid
AbstractThujone is a natural biologically active monoterpene ketone component of essential oils of numerous plants. The aim of the study was to evaluate the effect of β-thujone and β-thujone derivatives bisulfite adduct, lactone, oxime, and lactam application on behavior of Myzus persicae (Sulz.) (Hemiptera: Aphididae) during probing and settling. The choice and no-choice tests (aphid settling and Electrical Penetration Graph (EPG), respectively) revealed that stereochemistry of thujone was important for biological activity (β-thujone caused changes in aphid behavior while α-thujone did not) and that cyclopentane ring modifications and functional groups addition gave derivatives that possessed stronger and more durable deterrent effects. The most effective modification was the incorporation of a lactam moiety into the β-thujone molecule. Application of β-thujone lactam limited aphid settling for at least 24 h, caused restlessness in aphids and a delay or failure in reaching phloem phase by M. persicae. β-Thujone lactam can be considered a deterrent of medium potency with activity expressed at preingestive phase of aphid probing. Other compounds did not restrain aphid stylet penetration in non-phloem tissues but slightly limited sap ingestion (lactone, oxime), and restrained aphid settling for a period of less than 24 h (β-Thujone, bisulphite adduct, lactone). View Full-Text
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Wróblewska-Kurdyk, A.; Gniłka, R.; Dancewicz, K.; Grudniewska, A.; Wawrzeńczyk, C.; Gabryś, B. β-Thujone and Its Derivatives Modify the Probing Behavior of the Peach Potato Aphid. Molecules 2019, 24, 1847.
Wróblewska-Kurdyk A, Gniłka R, Dancewicz K, Grudniewska A, Wawrzeńczyk C, Gabryś B. β-Thujone and Its Derivatives Modify the Probing Behavior of the Peach Potato Aphid. Molecules. 2019; 24(10):1847.Chicago/Turabian Style
Wróblewska-Kurdyk, Anna; Gniłka, Radosław; Dancewicz, Katarzyna; Grudniewska, Aleksandra; Wawrzeńczyk, Czesław; Gabryś, Beata. 2019. "β-Thujone and Its Derivatives Modify the Probing Behavior of the Peach Potato Aphid." Molecules 24, no. 10: 1847.
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