Feeding deterrence towards Helicoverpa armigera by Tithonia diversifolia tagitinin C-enriched extract

Autor(es)

Inacio, Gabriel da Costa ^[1] ; Britto Alves, Joao Victor ^[1] ; Conceicao Santos, Mario Ferreira ^[1] ; Vacari, Alessandra Marieli ^[1] ; Figueiredo, Gustavo Pincerato ^[1] ; Bernardes, Wagner Antonio ^[2] ; Sola Veneziani, Rodrigo Cassio ^[1] ; Ambrosio, Sergio Ricardo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Franca, Nucleus Res Technol & Exact Sci, Franca, SP - Brazil

^[2] Univ Ctr Cerrado Patrocinio, Patrocinio, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ARABIAN JOURNAL OF CHEMISTRY; v. 13, n. 5, p. 5292-5298, MAY 2020.
• Citações Web of Science: 0

Resumo

The use of botanical insecticides is a tactic that can be highly useful for the management of Helicoverpa armigera populations in the field. However, most botanical insecticides are produced using primarily macerated leaves. The problem with this process is that all components of the leaves are present in the extract, and not just the plant defence chemicals. Therefore, the objective of this research was to evaluate the feeding deterrence of a tagitinin C-rich leaf rinse extract (TagCE) obtained from Tithonia diversifolia (which concentrates mainly the plant defence substances) towards H. armigera larvae. The RP-HPLC-PDA analytical method allowed the identification and quantification of the major constituent TagCE, showing that this compound is suitable to be considered as its chemical marker. Regarding biological activity, we observed high insect mortality, with up to 80%, and high antifeedant activity for H. armigera larvae for all host plant species treated with T. diversifolia extract. These results open up the possibility to use T. diversifolia extract as a potential botanical insecticide, mainly against plant-defoliating Lepidoptera. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of King Saud University. (AU)

• Processo FAPESP: 18/25010-2 - Isolamento e identificação de componentes químicos das própolis marrom e verde.
• Beneficiário: Mário Ferreira Conceição Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado