title: Isolation of insecticidal components in Inula salsoloides Ostenf. and characterisation of their activities.
abstract: The ethanol extract from Inula salsoloides (Turcz.) Ostenf was found to cause high mortality against Plutella xylostella L. (Lepidoptera: Plutellidae). The active components were isolated and identified. Two compounds were obtained and identified to be inulasalsolin and taraxasterol. Both compounds showed anti-feedant effects against third instar larvae of P. xylostella with AFC50of 0.030 and 0.053 mg/mL and insecticidal activities with LC50of 0.19 and 0.49 mg/mL, respectively. The two compounds also exhibited high toxicity to cabbage aphid, Brevicoryne brassicae L. (Hemiptera: Aphididae) with LC50values of 0.021 and 0.098 mg/mL. This is the first report on the study of insecticidal components of I. salsoloides and their activity against insects.
authors.affiliation: a College of Life and Environmental Science , Shanghai Normal University , Shanghai , China.
authors.forename: Minli
authors.initials: M
authors.lastname: Yang
authors.affiliation: a College of Life and Environmental Science , Shanghai Normal University , Shanghai , China.
authors.forename: Kun
authors.initials: K
authors.lastname: Lin
mesh_terms: D000818:Animals; D001042:Aphids / Q000187:drug effects; D004353:Drug Evaluation, Preclinical / Q000379:methods; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D038143:Inula / Q000737:chemistry*; D007814:Larva / Q000187:drug effects; D007915:Lepidoptera / Q000187:drug effects; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D013261:Sterols / Q000737:chemistry / Q000494:pharmacology*; D014315:Triterpenes / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D006576:Heterocyclic Compounds, 4 or More Rings; D007306:Insecticides; D010936:Plant Extracts; D013261:Sterols; D014315:Triterpenes; C000623396:inulasalsolin; C079988:taraxasterol
keywords: Brevicoryne brassicae L; Inula salsoloides Ostenf; Plutella xylostella L; bioactivity; inulasalsolin; taraxasterol