Repellent and Antifeedant Activities of Citral-Derived Lactones against the Peach Potato Aphid
Katarzyna Dancewicz , Antoni Szumny , Czesław Wawrzeńczyk , Beata Gabryś
AbstractCitral is well known for its antimicrobial, antifungal, and insecticidal activities. Natural sesquiterpene α-methylenelactones also exhibit a broad spectrum of biological activities. The aim of the study was to explore the effect of structural changes to citral molecules on citral behavior-modifying activity towards Myzus persicae. Specifically, the effects of the introduction of a γ-lactone moiety and methylene groups in α and γ positions of the lactone ring were investigated. The lactones were obtained in five-step (saturated lactone and γ-methylenelactone) or six-step (α-methylenelactone and α,γ-dimethylenelactone) syntheses from citral. The synthetic procedures and physical and spectral data of the lactones are presented. The settling behavior of freely moving aphids in choice and no-choice situations was monitored. The probing behavior of tethered M. persicae using the Electrical Penetration Graph (EPG) technique was also analyzed. Citral appeared a strong repellent and pre-ingestive and ingestive probing deterrent to M. persicae. The incorporation of a lactone moiety caused the loss of the repellent activity. α-Methylenelactone inhibited aphid settling and probing activities at pre-ingestive and ingestive phases. The saturated γ-lactone and α,γ-dimethylenelactone were the settling post-ingestive deterrents to M. persicae, which did not affect aphid probing activity. γ-Methylenelactone did not affect aphid behavior.
|Journal series||International Journal of Molecular Sciences, ISSN 1422-0067, (N/A 140 pkt)|
|Publication size in sheets||0.75|
|Keywords in English||lactones; terpene derivatives; antifeedant; aphids; probing behavior|
|ASJC Classification||; ; ; ; ; ; ;|
|License||Journal (articles only); published final; ; with publication|
|Score||= 140.0, 21-04-2021, ArticleFromJournal|
|Publication indicators||= 0; = 0; : 2018 = 1.224; : 2018 = 4.183 (2) - 2018=4.331 (5)|
|Citation count*||1 (2021-05-12)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.