1 research outputs found
Laurus novocanariensis essential oil: Seasonal variation and valorization
9 pages, figures, and tables statistics.We investigated the qualitative and quantitative seasonal variation of the leaf and fruit oils of the Macaronesian endemism
Laurus novocanariensis and their plant defensive potential. The monoterpene fraction dominated the leaf (74%) and berry essential
oils (73e44%, ripeeunripe). The insect antifeedant effects of these oils were species- and season-dependent against the aphids
(Myzus persicae and Rhopalosiphum padi). Overall, the biological effects of these oils correlated with the oxygenated terpene
fraction. Among the pure components tested, b-caryophyllene and its oxide were strong antifeedants to Leptinotarsa decemlineata
and Spodoptera littoralis. The aphids responded to b-ocimene, b-pinene, 1,8-cineole, linalool (antifeedants) and linalool oxide
(attractive to M. persicae). The antifungal effects of the leaf oils on Fusarium spp. were season-dependent. b-Caryophyllene oxide
proved to be a strong antifungal. L. novocanariensis oils inhibited Lactuca sativa germination and radicle elongation, the leaves
being more effective. Linalool also inhibited seed germination.Peer reviewe