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- Title
Contrasting insect attraction and herbivore-induced plant volatile production in maize.
- Authors
Block, Anna K.; Hunter, Charles T.; Rering, Caitlin; Christensen, Shawn A.; Meagher, Robert L.
- Abstract
Main conclusion: The maize inbred line W22 has lower herbivore-induced volatile production than B73 but both fall armyworm larvae and the wasps that parasitize them prefer W22 over B73.Abstract: Maize inbred line W22 is an important resource for genetic studies due to the availability of the UniformMu mutant population and a complete genome sequence. In this study, we assessed the suitability of W22 as a model for tritrophic interactions between maize, Spodoptera frugiperda (fall armyworm) and the parasitoid wasp Cotesia marginiventris. W22 was found to be a good model for studying the interaction as S. frugiperda prefers W22 over B73 and a higher parasitism rate by C. marginiventris was observed on W22 compared to the inbred line B73. W22 also produced lower amounts of many herbivore-induced volatile terpenes and indole emission upon treatment with S. frugiperda oral secretions. We propose that some of the major herbivore-induced terpene volatiles are perhaps impeding S. frugiperda and C. marginiventris preference and that as yet unidentified compounds are produced at low abundance may be positively impacting these interactions.
- Subjects
INSECT development; HERBIVORES; CORN; PARASITISM; TERPENES
- Publication
Planta: An International Journal of Plant Biology, 2018, Vol 248, Issue 1, p105
- ISSN
0032-0935
- Publication type
Article
- DOI
10.1007/s00425-018-2886-x