Data/hora: 08/06/2024 13:23:56

Biblioteca(s): | Epagri-Sede.
Data corrente: | 06/10/2014
Data da última atualização: | 06/10/2014
Autoria: | ANSANTE, T. F.; VENDRAMIM, J. D.; RIBEIRO, L. P.; BICALHO, K. U.; FERNANDES, J. B.
Título: | Secondary metabolites from Neotropical Annonaceae: screening, bioguided fractionation, and toxicity to Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera Noctuidae).
Ano de publicação: | 2014
Fonte/Imprenta: | In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 25., 2014, Goiânia, GO. Anais... Goiânia, GO: [s.n.], 2014.
Idioma: | Português
Conteúdo: | A screening assay with ethanolic extracts prepared from leaves, branches, and seeds of different Annonaceae species (Annona cacans Warming, 1873, Annona montana Macfadyen, 1837, Annona mucosa Jacquin, 1764, Annona reticulata Linnaeus, 1753, Annona sylvatica A. St.-Hil., 1825, and Duguetia lanceolata A. St.-Hil., 1825) was conducted, firstly, in order to detect promising sources of compounds with action against Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae). Ethanolic extract from A. mucosa seeds (ESAM) was the most promising treatment, causing significant acute toxicity (LC50 = 842.97 mg kg-1) and pronounced larval growth inhibition (EC50 = 580.40 mg kg-1) after 7 days of exposition to treated diet. Furthermore, ethanolic extracts (at 1,000 mg kg-1) from seeds of A. cacans, A. montana, A. mucosa, and A. sylvatica, and leaves and branches of A. reticulata as well as D. lanceolata leaves only caused sublethal effects, reducing the S. frugiperda larval weight. Thereafter, ESAM efficacy was compared to commercial pesticides from natural [azadirachtin + 3-tigloylazadirachtol (Azamax® 1.2 EC)] and synthetic [chlorantraniliprole (Premio® 20 SC)] origin. In this comparison, ESAM (at LC90) showed similar efficacy to that of commercial insecticides tested at registered concentration for S. frugiperda control. Thus, bioguided fractionations using different chromatographic techniques were conducted and led to isolation of acetogenin bis-tetrahydrofuran rolliniastatin-1, which was identified as the majority compound of the most active fraction of ESAM. This compound caused both strong mortality and pronounced growth inhibition to S. frugiperda, and it can be a useful component for integrated management of this pest species in field conditions.
Palavras-Chave: | acetogenins; allelochemicals; botanical insecticide; fall armyworm; rolliniastatin1; toxicity.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_34908.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (96938-1) - UPC - PL - DD -  -  -  - DIS