| Title: | Volatiles released by Beauveria bassiana induce oviposition behavior in the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| Author(s): | Ramirez-Ordorica A; Contreras-Cornejo HA; Orduno-Cruz N; Luna-Cruz A; Winkler R; Macias-Rodriguez L; |
| Address: | "Instituto de Investigaciones Quimico Biologicas, Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, 58030, Mexico. Facultad de Ciencias Agrotecnologicas, Universidad Autonoma de Chihuahua, Chihuahua, Chihuahua, 31350, Mexico. CONACYT-Instituto de Investigaciones Quimico Biologicas, Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, 58030, Mexico. Department of Biotechnology and Biochemistry, CINVESTAV-Irapuato, Instituto Politecnico Nacional, Irapuato, Guanajuato, 36824, Mexico" |
| ISSN/ISBN: | 1574-6941 (Electronic) 0168-6496 (Linking) |
| Abstract: | "Microbial volatile organic compounds may act as semiochemicals, inciting different behavioral responses in insects. Beauveria bassiana is an entomopathogenic fungus, and physiological and environmental factors are positively related to fungal virulence. In this study, we examined the volatile profiles produced by eight B. bassiana strains, isolated from soil plots and mycosed insect cadavers, with different speeds of kill and determined if these compounds induce oviposition behavior in Spodoptera frugiperda. Fungal volatilome analysis revealed differences between the isolates. Isolates from mycosed insects showed higher virulence, larger egg mass area and length, and a higher number of eggs by mass, than those obtained from soil. Furthermore, a dilution of the fungal odoriferous compounds increased the insect response, suggesting that S. frugiperda is highly susceptible to the fungal compound's fingerprint. Otherwise, the insect response to the natural blend of volatiles released by the fungus was different from that obtained with 3-methylbutanol, which was the most abundant compound in all isolates. The ability of an entomopathogen to produce volatiles that can induce olfactory stimulation of egg-laying behavior could represent an ecological adaptive advantage in which the entomopathogen stimulates the insect population growth" |
| Keywords: | Animals *Beauveria Female Insecta *Moths Oviposition Pentanols Pheromones/pharmacology Soil Spodoptera *Volatile Organic Compounds/pharmacology entomopathogenic fungi fungal volatile compounds insect; |
| Notes: | "MedlineRamirez-Ordorica, Arturo Contreras-Cornejo, Hexon Angel Orduno-Cruz, Nuvia Luna-Cruz, Alfonso Winkler, Robert Macias-Rodriguez, Lourdes eng Research Support, Non-U.S. Gov't England 2022/09/28 FEMS Microbiol Ecol. 2022 Oct 10; 98(10):fiac114. doi: 10.1093/femsec/fiac114" |
