Potential allelochemicals from the essential oil of Ruta graveolens.
The essential oil of aerial parts of Ruta graveolens was obtained by hydrodistillation with a 0.74% yield on a dry weight basis. Thirty-eight components were identified by GC and GC-MS analyses. 2-Ketones predominated in the essential oil, with undecan-2-one (46.8%) and nonan-2-one (18.8%) as the main constituents. The essential oil and some of its constituents were tested for their allelopathic activity in vitro on radish germination and radicle growth in light and darkness. The essential oil and some of its minor constituents were effective and dose-dependent inhibitors of both the germination and radicle growth; 2-ketones are not active. The possible allelopathic activity of rue essential oil and some its isolated constituents is reported.
De Feo
Vincenzo
V
Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Via Ponte Don Melillo, I-84084 (Salerno), Fisciano, Italy. defeo@unisa.it
De Simone
Francesco
F
Senatore
Felice
F
D003624:Darkness; D004305:Dose-Response Relationship, Drug; D018525:Germination / Q000187:drug effects; D008027:Light; D009822:Oils, Volatile / Q000737:chemistry* / Q000494:pharmacology*; D035261:Plant Components, Aerial / Q000737:chemistry; D031224:Raphanus / Q000187:drug effects* / Q000254:growth & development; D032105:Ruta / Q000737:chemistry*; D012639:Seeds / Q000187:drug effects
D009822:Oils, Volatile