| Title: | Predatory Earwigs are Attracted by Herbivore-Induced Plant Volatiles Linked with Plant Growth-Promoting Rhizobacteria |
| Author(s): | Bell K; Naranjo-Guevara N; Santos RCD; Meadow R; Bento JMS; |
| Address: | "Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, 1433 As, Norway. Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of Sao Paulo, Piracicaba, Sao Paulo State 13418-900, Brazil. Fontys International Business School Venlo, Fontys University of Applied Sciences, 5912 Venlo, The Netherlands" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "Plant-associated microbes may induce plant defenses against herbivores. Plants, in turn, can attract natural enemies, such as predators, using herbivore-induced plant volatiles. Intricate communication occurs between microorganisms, plants, and insects. Given that many aspects related to mechanisms involved in this symbiotic system remain unknown, we evaluated how beneficial soil-borne microorganisms can affect the interactions between plants, herbivores, and natural enemies. For this study, we established a multitrophic system composed of the predatory earwig Doru luteipes (Dermaptera: Forficulidae), arugula (Eruca sativa, Brassicaceae) as the host plant, Plutella xylostella (Lepidoptera: Plutellidae) larvae as a specialist herbivore, Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae as a generalist herbivore, and Bacillus amyloliquefaciens as the plant growth-promoting rhizobacteria (PGPR), in a series of nocturnal olfactometry experiments. By assessing earwig preference towards herbivore-induced and PGPR-inoculated plants in different combinations, we showed that the interaction between rhizobacteria, plants, and herbivores can affect the predatory earwig's behavior. Furthermore, we observed a synergistic effect in which earwigs were attracted by plants that presented as PGPR inoculated and herbivore damaged, for both specialist and generalist herbivores. Our findings help fill the important knowledge gap regarding multitrophic interactions and should provide useful guidelines for their application to agricultural fields" |
| Keywords: | Bacillus amyloliquefaciens GB03 Brassicaceae insect-plant-microbe interactions olfactory behavior soil-borne bacteria; |
| Notes: | "PubMed-not-MEDLINEBell, Kim Naranjo-Guevara, Natalia Santos, Rafaela C Dos Meadow, Richard Bento, Jose M S eng 2014/50871-0/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ Switzerland 2020/05/06 Insects. 2020 Apr 29; 11(5):271. doi: 10.3390/insects11050271" |
