title: Activity of the botanical aphicides 1,5-diphenyl-1-pentanone and 1,5-diphenyl-2-penten-1-one on two species of Aphididnae.
abstract: 1,5-Diphenyl-1-pentanone (A) and 1,5-diphenyl-2-penten-1-one (B) are natural products extracted for the first time from Stellera chamaejasme. Laboratory bioassay showed that the two products have strong contact activity and very good anti-feedant activity against Aphis gossypii and Schizaphis graminum. Both products showed dose-dependent relationships for both forms of activity against the two aphids, the contact activity of B being about twice that of A. Both products were inferior to methomyl in contact activity but superior in anti-feedant activity against the two aphids. This is the first report of aphicidal activity in these two compounds, which may represent a new class of aphicide.
authors.affiliation: State Specialized Laboratory of Biocontrol Engineering in Mouse, Insect Pests and Plant Diseases of Grasslands, Sichuan University, Chengdu 610064, People's Republic of China.
authors.forename: P
authors.initials: P
authors.lastname: Gao
authors.forename: T
authors.initials: T
authors.lastname: Hou
authors.forename: R
authors.initials: R
authors.lastname: Gao
authors.forename: Q
authors.initials: Q
authors.lastname: Cui
authors.forename: S
authors.initials: S
authors.lastname: Liu
mesh_terms: D000818:Animals; D001042:Aphids / Q000187:drug effects*; D001681:Biological Assay; D005247:Feeding Behavior / Q000187:drug effects; D007300:Insect Control / Q000379:methods; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification / Q000633:toxicity*; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry; D015394:Molecular Structure; D010422:Pentanones / Q000737:chemistry / Q000302:isolation & purification / Q000633:toxicity*; D010936:Plant Extracts / Q000302:isolation & purification / Q000633:toxicity*
chemical_list: C433344:1,5-diphenyl-1-pentanone; C433345:1,5-diphenyl-2-penten-1-one; D007306:Insecticides; D010422:Pentanones; D010936:Plant Extracts