title: Insecticidal activity of chemical constituents from Aristolochia pubescens against Anticarsia gemmatalis larvae.
abstract: Acetone and ethanol extracts of the tubercula and several compounds isolated from Aristolochia pubescens (Willd) were bioassayed on velvetbean caterpillars, Anticarsia gemmatalis (Hübner), for evaluation of the insecticidal activities. Of the extracts subjected to bioassay, the acetone extract showed the highest activity. (-)-Cubebin did not show activity against soybean caterpillars, whereas aristolochic acid and ent-kaur-15-en-17-ol increased the larval period. These compounds, and (+)-eudesmin and (+)-sesamin, reduced the viability of this period, giving rise to malformed adults. These extracts and compounds are therefore potential botanical insecticide agents for the control of velvetbean caterpillars in soybean crops.
authors.affiliation: Instituto de Química, Unesp, CP 355, 14801-970, Araraquara, SP, Brazil.
authors.forename: Isabele R
authors.initials: IR
authors.lastname: Nascimento
authors.forename: Afonso T
authors.initials: AT
authors.lastname: Murata
authors.forename: Sergio A
authors.initials: SA
authors.lastname: Bortoli
authors.forename: Lucia M X
authors.initials: LM
authors.lastname: Lopes
mesh_terms: D000818:Animals; D030022:Aristolochia / Q000737:chemistry*; D034341:Aristolochic Acids / Q000633:toxicity; D001681:Biological Assay; D004149:Dioxoles / Q000633:toxicity; D004224:Diterpenes / Q000633:toxicity; D005663:Furans / Q000633:toxicity; D007306:Insecticides / Q000633:toxicity*; D007814:Larva / Q000187:drug effects*; D007915:Lepidoptera / Q000187:drug effects*; D017705:Lignans / Q000633:toxicity; D010936:Plant Extracts / Q000633:toxicity*
chemical_list: D034341:Aristolochic Acids; D004149:Dioxoles; D004224:Diterpenes; D005663:Furans; D007306:Insecticides; D017705:Lignans; D010936:Plant Extracts; C066409:kaur-15-en-17-ol; C105875:eudesmin; C000228:aristolochic acid I; C433065:cubebin; C054125:sesamin