title: Arjunetin from Terminalia arjuna as an insect feeding-deterrent and growth inhibitor.
abstract: Crude ethanolic extract of the stem bark of Terminalia arjuna (Combretaceae) and its three compounds namely arjunic acid, arjungenin and arjunetin were evaluated for antifeedant, growth inhibitory and oviposition-deterrent activities against a lepidopterous insect Spilarctia obliqua. The compound arjunetin showed highest growth inhibitory and feeding-deterrent properties with a growth inhibition (GI(50)) and feeding-inhibition (FD(50)) of 188.5 and 287.1 micro g/g diet respectively. Oviposition bioassays indicated no oviposition-deterrence in any of the compounds tested. The structure-activity relationship study indicated the importance of a glycosidation linkage in arjunetin.
authors.affiliation: Analytical Testing Laboratory, Central Institute of Medicinal and Aromatic Plants, Lucknow, India.
authors.forename: D V
authors.initials: DV
authors.lastname: Singh
authors.forename: M M
authors.initials: MM
authors.lastname: Gupta
authors.forename: A K
authors.initials: AK
authors.lastname: Tripathi
authors.forename: Veena
authors.initials: V
authors.lastname: Prajapati
authors.forename: S
authors.initials: S
authors.lastname: Kumar
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D005247:Feeding Behavior / Q000187:drug effects; D006131:Growth Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D007313:Insecta / Q000187:drug effects / Q000502:physiology; D010058:Oviposition / Q000187:drug effects; D008517:Phytotherapy; D024301:Plant Bark; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D012503:Saponins / Q000737:chemistry / Q000494:pharmacology*; D029766:Terminalia
chemical_list: D006131:Growth Inhibitors; D010936:Plant Extracts; D012503:Saponins; C484967:arjunetin