Contrasting insect attraction and herbivore-induced plant volatile production in maize

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)...

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Bibliographic Details
Published in:Planta 2018-07, Vol.248 (1), p.105-116
Main Authors: Block, Anna K., Hunter, Charles T., Rering, Caitlin, Christensen, Shawn A., Meagher, Robert L.
Format: Article
Language:English
Subjects:
Adults
Agriculture
Animals
Benzoxazines - metabolism
Biomedical and Life Sciences
Corn
Crop production
Ecology
Fatty acids
Forestry
Gene Expression Profiling
Genetic resources
Genomes
Genomics
Glycerol
Herbivores
Herbivory
Inbreeding
Indoles
Indoles - metabolism
Insects
Larvae
Life Sciences
Models, Biological
Nucleotide sequence
ORIGINAL ARTICLE
Parasitism
Parasitoids
Pheromones - metabolism
Plant Sciences
Secretions
Spodoptera - parasitology
Spodoptera frugiperda
Terpenes
Terpenes - metabolism
Tri-trophic interactions
VOCs
Volatile compounds
Volatile organic compounds
Volatile Organic Compounds - metabolism
Volatiles
Wasps - physiology
Zea mays - metabolism
Zea mays - parasitology
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Summary: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.
ISSN:0032-0935
1432-2048
DOI:10.1007/s00425-018-2886-x