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Artículo

Pathogenicity of microsclerotia from Metarhizium robertsii against Aedes aegypti larvae and antimicrobial peptides expression by mosquitoes during fungal-host interaction

Santos Da Paixao, Flavia ReginaIcon ; Falvo, Marianel LucíaIcon ; Huarte Bonnet, CarlaIcon ; Santana, MarianelaIcon ; Garcia, Juan Jose; Fernandes, Éverton; Pedrini, NicolásIcon
Fecha de publicación: 01/2024
Editorial: Elsevier Science
Revista: Acta Tropica
ISSN: 0001-706X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Zoología, Ornitología, Entomología, Etología

Resumen

Aedes aegypti is a vector of various disease-causing arboviruses. Chemical insecticide-based methods for mosquito control have increased resistance in different parts of the world. Thus, alternative control agents such as the entomopathogenic fungi are excellent candidates to control mosquitoes as part of an ecofriendly strategy. There is evidence of the potential of entomopathogenic fungal conidia and blastospores for biological control of eggs, larval and adult stages, as well as the pathogenicity of fungal microsclerotia against adults and eggs. However, there are no studies on the pathogenicity of microsclerotia against either aquatic insects or insects that develop part of their life cycle in the water, such as the A. aegypti larvae. In this study, we assayed the production of microsclerotia and their pathogenicity against A. aegypti larvae of two isolates of Metarhizium robertsii, i.e., CEP 423 isolated in La Plata, Argentina, and the model ARSEF 2575. Both isolates significantly reduced the survival of A. aegypti exposed to their microsclerotia. The fungus-larva interaction resulted in a delayed response in the host. This was evidenced by the expression of some humoral immune system genes such as defensins and cecropin on the 9th day post-infection when the fungal infection was consolidated as a successful process that culminates in larvae mortality. In conclusion, M. robertsii microsclerotia are promising propagules to be applied as biological control agents against mosquitoes since they produce pathogenic conidia against A. aegypti larvae.
Palabras clave: DENGUE VECTOR , ENTOMOPATHOGENIC FUNGI , DEFENSIN , CECROPIN
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/230622
URL: https://www.sciencedirect.com/science/article/abs/pii/S0001706X23002474
DOI: http://dx.doi.org/10.1016/j.actatropica.2023.107061
Colecciones
Articulos(CEPAVE)
Articulos de CENTRO DE EST.PARASITOL.Y DE VECTORES (I)
Articulos(INIBIOLP)
Articulos de INST.DE INVEST.BIOQUIMICAS DE LA PLATA
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Santos Da Paixao, Flavia Regina; Falvo, Marianel Lucía; Huarte Bonnet, Carla; Santana, Marianela; Garcia, Juan Jose; et al.; Pathogenicity of microsclerotia from Metarhizium robertsii against Aedes aegypti larvae and antimicrobial peptides expression by mosquitoes during fungal-host interaction; Elsevier Science; Acta Tropica; 249; 107061; 1-2024; 1-7
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