Positive Chemotaxis of the Entomopathogenic Nematode Steinernema australe (Panagrolaimorpha: Steinenematidae) towards High-Bush Blueberry (Vaccinium corymbosum) Root Volatiles

Primer Autor
Ceballos, Ricardo
Co-autores
Palma-Millanao, Ruben
Navarro, Patricia D. D.
Urzua, Julio
Alveal, Juan
Título
Positive Chemotaxis of the Entomopathogenic Nematode Steinernema australe (Panagrolaimorpha: Steinenematidae) towards High-Bush Blueberry (Vaccinium corymbosum) Root Volatiles
Editorial
MDPI
Revista
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Lenguaje
en
Resumen
The foraging behavior of the infective juveniles (IJs) of entomopathogenic nematodes (EPNs) relies on host-derived compounds, but in a tri-trophic context, herbivore-induced root volatiles act as signals enhancing the biological control of insect pests by recruiting EPNs. In southern Chile, the EPN Steinernema australe exhibits the potential to control the raspberry weevil, Aegorhinus superciliosus, a key pest of blueberry Vaccinium corymbosum. However, there is no information on the quality of the blueberry root volatile plume or the S. australe response to these chemicals as putative attractants. Here, we describe the root volatile profile of blueberries and the chemotaxis behavior of S. australe towards the volatiles identified from Vaccinium corymbosum roots, infested or uninfested with A. superciliosus larvae. Among others, we found linalool, & alpha,-terpineol, limonene, eucalyptol, 2-carene, 1-nonine, 10-undecyn-1-ol, and methyl salicylate in root volatiles and, depending on the level of the emissions, they were selected for bioassays. In the dose-response tests, S. australe was attracted to all five tested concentrations of methyl salicylate, 1-nonine, & alpha,-terpineol, and 2-carene, as well as to 100 & mu,g mL(-1) of 10-undecyn-1-ol, 0.1 and 100 & mu,g mL(-1) of linalool, and 100 & mu,g mL(-1) of limonene, whereas eucalyptol elicited no attraction or repellency. These results suggest that some volatiles released from damaged roots attract S. australe and may have implications for the biocontrol of subterranean pests.
Fecha Publicación
2023
Tipo de Recurso
artículo original
doi
10.3390/ijms241310536
Formato Recurso
PDF
Palabras Claves
root volatiles
belowground interactions
entomopathogenic nematode recruitment
foraging behavior
olfactometer
Ubicación del archivo
http://dx.doi.org/10.3390/ijms241310536
Categoría OCDE
Bioquímica y biología molecular
Química
Materias
raíces volátiles
interacciones subterráneas
reclutamiento de nematodos entomopatógenos
comportamiento de búsqueda de alimento
olfatómetro
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
versión publicada
License
CC BY 4.0
Condición de la licencia (Recomendado-repetible)
CC BY 4.0
Derechos de acceso
acceso abierto
Access Rights
acceso abierto
Id de Web of Science
WOS:001031141500001
ISSN
1661-6596
Tipo de ruta
verde# dorado
Categoría WOS
Bioquímica y biología molecular
Química
Referencia del Financiador (Mandatado si es aplicable-repetible)
ANID FONDEF IDeA I+D 18I10005
Colecciones
Colección Publicaciones Científicas
Colección ANID
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