| Title: | Zoophytophagous mites can trigger plant-genotype specific defensive responses affecting potential prey beyond predation: the case of Euseius stipulatus and Tetranychus urticae in citrus |
| Author(s): | Cruz-Miralles J; Cabedo-Lopez M; Perez-Hedo M; Flors V; Jaques JA; |
| Address: | "Departament de Ciencies Agraries i del Medi Natural, Unitat Associada d'Entomologia Agricola UJI-IVIA, Universitat Jaume I (UJI), Castello de la Plana, Spain. Departament de Ciencies Agraries i del Medi Natural, Integracion Metabolica y Senalizacion Celular, Universitat Jaume I (UJI), Castello de la Plana, Spain" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Zoophytophagous predators can trigger plant defenses affecting prey populations beyond predation. Euseius stipulatus is a presumed zoophytophagous phytoseiid common in citrus. The response of citrus to one of its potential prey, Tetranychus urticae, is genotype dependent, with Citrus reshni and C. aurantium exhibiting extreme susceptibility and resistance, respectively. Volatile blends produced upon infestation affected the behavior of these two mites. We wondered whether E. stipulatus could trigger similar responses. RESULTS: Euseius stipulatus triggered genotype-dependent defense responses in citrus. Whereas C. aurantium upregulated the Jasmonic Acid, Salicylic Acid and flavonoids defensive pathways, C. reshni upregulated JA only. Likewise, different volatile blends were induced. These blends were exploited by E. stipulatus to select less-defended plants (i.e., those in which higher pest densities are expected) and, interestingly, did not prevent T. urticae from choosing E. stipulatus-infested plants. To the best of our knowledge, this is the first time that this type of response has been described for a zoophytophagous phytoseiid. CONCLUSION: The observed responses could affect herbivore populations through plant-mediated effects. Although further research is needed to fully characterize them and include other arthropods in the system, these results open opportunities for more sustainable and effective pest control methods (i.e., combining semiochemicals and biological control). (c) 2018 Society of Chemical Industry" |
| Keywords: | Animals Citrus/*genetics/*metabolism Cyclopentanes/metabolism Feeding Behavior/psychology Flavonoids/metabolism Herbivory/physiology Mites/*physiology Oxylipins/metabolism Predatory Behavior/physiology Salicylic Acid/metabolism Tetranychidae/*physiology H; |
| Notes: | "MedlineCruz-Miralles, Joaquin Cabedo-Lopez, Marc Perez-Hedo, Meritxell Flors, Victor Jaques, Josep A eng AGL2014-55616-C3AGL2015-64990-2RBES-2015-074570subprogram DOC INIA-CCAA/Spanish Ministry of Economy and Competitiveness (MINECO)/ Comparative Study England 2018/12/24 Pest Manag Sci. 2019 Jul; 75(7):1962-1970. doi: 10.1002/ps.5309. Epub 2019 Feb 7" |
