| Title: | Compatibility of mycorrhiza-induced resistance with viral and bacterial entomopathogens in the control of Spodoptera exigua in tomato |
| Author(s): | Frattini A; Martinez-Solis M; Llopis-Gimenez A; Pozo MJ; Rivero J; Crava CM; Herrero S; |
| Address: | "Department of Genetics and University Institute of Biotechnology and Biomedicine (BIOTECMED), Universitat de Valencia, Valencia, Spain. Department of Soil Microbiology and Symbiotic Systems, Estacion Experimental del Zaidin - Consejo Superior de Investigaciones Cientificas, Granada, Spain" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Print) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Arbuscular mycorrhizal fungi (AMF) are soil-borne microorganisms that establish mutualistic associations with roots of most terrestrial plants. This symbiosis results in nutritional and defensive benefits to the host plant, usually conferring protection against biotic stresses, but its indirect impact on third trophic levels is still unknown. In the present work, we explore whether the symbiosis of tomato plants with Funneliformis mosseae (and/or exposition to herbivory) influences the interaction of the generalist pest Spodoptera exigua (Lepidoptera: Noctuidae) with bacterial (Bacillus thuringiensis) and viral (baculovirus, SeMNPV) natural entomopathogens. RESULTS: Symbiosis with AMF and previous herbivory reduces the relative growth of S. exigua, increases its susceptibility to a sublethal dose of B. thuringiensis and has positive or neutral impact on the lethality of SeMNPV. Reduction of the phenoloxidase activity, a marker of the insect immune response, was associated with the larval feeding on plant material previously exposed to herbivory but not to the AMF. In addition, no changes in the insect gut microbiota could be associated with the observed changes in larval growth and susceptibility to the entomopathogens. CONCLUSION: Our findings provide the first evidence of compatibility of AMF symbiosis in tomato with the use of bacterial and viral entomopathogens, contributing to the development of novel approaches to combine the beneficial effect of AMF and entomopathogens in biological pest control. (c) 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry" |
| Keywords: | Animals *Bacillus thuringiensis Insecta Larva *Solanum lycopersicum/microbiology *Mycorrhizae/physiology Plant Roots Plants Spodoptera Symbiosis Solanum lycopersicum Spodoptera exigua arbuscular mycorrhizal fungi integrated pest management microbial entom; |
| Notes: | "MedlineFrattini, Ada Martinez-Solis, Maria Llopis-Gimenez, Angel Pozo, Maria J Rivero, Javier Crava, Cristina M Herrero, Salvador eng Ministerio de Ciencia e Innovacion/ Ministerio de Educacion y Cultura/ Generalitat Valenciana/ Ministry of Education/ Horizon 2020/ European Union/ University of Valencia/ England 2022/06/30 Pest Manag Sci. 2022 Oct; 78(10):4388-4396. doi: 10.1002/ps.7058. Epub 2022 Jul 20" |
