Effects on the development of Spodoptera frugiperda feeding on diets spiked with Solanum sisymbriifolium extracts
Título del documento: Effects on the development of Spodoptera frugiperda feeding on diets spiked with Solanum sisymbriifolium extracts
Revista: Ecletica quimica
Base de datos:
Número de sistema: 000552535
ISSN: 0100-4670
Autors: 4
3
3
1
1
2
2
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1
Institucions: 1Universidad de la República, Chemistry Institute, Pharmacognosy & Natural Products, 2124 General Flores Av, Montevideo, Uruguay.,
2Embrapa Cerrados, BR-020, km 18, Planaltina, Brasília - DF, Brasil.,
3University of Caxias do Sul, Biotechnology Institute, Pest Control Laboratory, 1130 Francisco Getúlio Vargas St, Caxias do Sul, Rio Grande do Sul, Brazil.,
4Universidad de la República, Chemistry Institute, Pharmacognosy & Natural Products, 2124 General Flores Av, Montevideo, Uruguay,
Any:
Volum: 45
Número: 2
Paginació: 33-43
País: Brasil
Idioma: Inglés
Resumen en inglés Aiming to evaluate the effects of Solanum sisymbriifolium extracts on the development of Spodoptera frugiperda, a leaf dichloromethane extract was obtained and subjected to further purification following a bioguided methodology. The structure of the two main compounds isolated from S. sisymbriifolium Type IV glandular trichomes have been completely elucidated by a combination of chemical and spectroscopic methods. They are glycosides of 3-(R)-hydroxypalmitic acid and xylo (β-1-5) furanoarabinoside (Compound 1) and its 3-O-palmitoyl derivative (Compound 2). These compounds greatly influenced the survival and the development of S. frugiperda, when compared to an in vitro test control. The extracts delayed the development, decreased survival and promote abnormalities in the immatures (larvae and pupae). They also showed increasing toxicity towards S. frugiperda in the purification following a bioguided fractionation. The pure compounds had the most deleterious activity, increasing the larval and pupal toxicity (100% mortality for Compound 2 at 2.50 mg mL-1 and 90% mortality for Compound 1 at 1.00 mg mL-1).
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