Toxicity of Bioactive Compounds of Strychnos pseudoquina (Loganiaceae) in Spodoptera frugiperda (Noctuidae)

Tainá A. A. Souza, Antônio C. S. Menezes, Cássia K. G. Santos, Flávio G. Jesus, Ednaldo C. Rocha and Márcio S. Araújo ()
Additional contact information
Tainá A. A. Souza: Programa de Pós-Graduação em Produção Vegetal, Universidade Estadual de Goiás, Ipameri 75780-000, GO, Brazil
Antônio C. S. Menezes: Programa de Pós-Graduação em Ciências Aplicadas a Produtos para Saúde, Universidade Estadual de Goiás, Anápolis 75053-730, GO, Brazil
Cássia K. G. Santos: Programa de Pós-Graduação em Ciências Aplicadas a Produtos para Saúde, Universidade Estadual de Goiás, Anápolis 75053-730, GO, Brazil
Flávio G. Jesus: Instituto Federal Goiano, Campus Urutaí, Urutaí 75790-000, GO, Brazil
Ednaldo C. Rocha: Programa de Pós-Graduação em Produção Vegetal, Universidade Estadual de Goiás, Ipameri 75780-000, GO, Brazil
Márcio S. Araújo: Programa de Pós-Graduação em Produção Vegetal, Universidade Estadual de Goiás, Ipameri 75780-000, GO, Brazil

Sustainability, 2024, vol. 16, issue 11, 1-14

Abstract: The objective of this study was to assess the toxicity of leaf and bark extracts of Strycns pseudoquina and their fractions, as well as flavonoids isolated from its bark, in a population of Spodoptera frugiperda . Crude bark and leaf extracts, as well as fractions of these extracts, were obtained using a rotary evaporator and different solvents; the ethyl acetate fraction was obtained, and flavonoid compounds were isolated, consisting mostly of 3-O-methylquercetin and minimally of strychnobiflavone. The crude extracts, extract fractions, and isolated flavonoids were applied separately to maize leaves, which were offered to S. frugiperda larvae; then, biological parameters of this insect population were evaluated. Toxic effects of topical applications of the isolated flavonoids on the larvae were also evaluated. The results highlighted the larvicidal effects of the crude bark extract and its fractions and the significant toxicity of this crude extract (LC 50 = 0.048%), which was six times more toxic to larvae than its ethyl acetate fraction (LC 50 = 0.288%). The investigated flavonoids showed no significant larvicidal effect. The pronounced larvicidal effect of S. pseudoquina bark crude extract and its fractions on S. frugiperda indicates that this plant presents an insecticidal potential to be explored in integrated pest management programs.

Keywords: fall armyworm; botanical insecticide; larvicide; flavonoid (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/16/11/4430/pdf (application/pdf)
https://www.mdpi.com/2071-1050/16/11/4430/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:16:y:2024:i:11:p:4430-:d:1400464

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().