Insecticidal efficacy and possibility of Combretum trifoliatum Vent. (Myrtales: Combretaceae) extracts in controlling Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae).

Changkeb, Veeravat; Nobsathian, Saksit; Le Goff, Gaelle; Coustau, Christine; Bullangpoti, Vasakorn

Changkeb, Veeravat; Nobsathian, Saksit; Le Goff, Gaelle; Coustau, Christine; Bullangpoti, Vasakorn.

Afiliación

Changkeb V; Animal Toxicology and Physiology Specialty Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand.
Nobsathian S; Nakhonsawan Campus, Mahidol University, Nakhonsawan, Thailand.
Le Goff G; Université Côte d'Azur, INRAE, CNRS, ISA, F-06903 Sophia Antipolis, France.
Coustau C; Université Côte d'Azur, INRAE, CNRS, ISA, F-06903 Sophia Antipolis, France.
Bullangpoti V; Animal Toxicology and Physiology Specialty Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand.

Pest Manag Sci ; 79(12): 4868-4878, 2023 Dec.

Article en En | MEDLINE | ID: mdl-37506299

RESUMEN

BACKGROUND: The fall armyworm Spodoptera frugiperda (J.E. Smith), is an important pest of agronomical crops. It is interesting to discover secondary metabolites in plants that are environmentally safer than synthetic pesticides. For this purpose, Combretum trifoliatum crude extract and its isolated compounds were investigated for their insecticidal activities against S. frugiperda. RESULTS: The median lethal dose (LD50 ) was evaluated in the second-instar larvae using the topical application method. The isolated compounds, apigenin and camphor, demonstrated a highly toxic effect on larvae at a lower LD50 dose than crude extract. Moreover, when the larvae were exposed to crude extract concentrations, the development to pupa and adult stages was reduced by more than 50%. The ovicidal toxicity was examined using a hand sprayer. The extract concentration 5, 10, and 20 µg/egg significantly decreased the egg hatchability. In addition, crude extract showed a significant difference in inhibiting acetylcholinesterase (AChE) activity while crude extract and camphor showed significant inhibitory effects on carboxylesterase (CE) and glutathione-S-transferase (GST) activities. CONCLUSION: The crude ethanol extract of Combretum trifoliatum was toxic to S. frugiperda in terms of larval mortality, negatively affecting biological parameters, and decreasing egg hatchability. Additionally, the activities of cholinergic and detoxifying enzymes were affected by crude extract and its isolated compounds. These results highlight that Combretum trifoliatum might be efficient as a bioinsecticide to control S. frugiperda. © 2023 Society of Chemical Industry.

Asunto(s)

Combretaceae; Combretum; Insecticidas; Myrtales; Animales; Insecticidas/farmacología; Spodoptera; Combretum/metabolismo; Combretaceae/metabolismo; Myrtales/metabolismo; Alcanfor/toxicidad; Acetilcolinesterasa/metabolismo; Larva; Extractos Vegetales/farmacología; Zea mays/metabolismo

Palabras clave

1,7,7-trimethylbicyclo[2.2.1]heptan-2-one; 5,7-dihydroxy-2-(4-hydroxyphenyl)chromen-4-one; Combretum trifoliatum Vent.; bioinsecticides; detoxification enzymes; fall armyworm

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Combretaceae / Combretum / Myrtales / Insecticidas Límite: Animals Idioma: En Revista: Pest Manag Sci Asunto de la revista: TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: Tailandia Pais de publicación: Reino Unido

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