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Volatile unsaturated hydrocarbons emitted by seedlings of Brassica species provide host location cues to Bagrada hilaris
- Source :
- PLoS ONE, PloS one, vol 13, iss 12, PLoS ONE, Vol 13, Iss 12, p e0209870 (2018)
- Publication Year :
- 2018
- Publisher :
- Public Library of Science (PLoS), 2018.
-
Abstract
- Bagrada hilaris Burmeister, is a stink bug native to Asia and Africa and invasive in the United States, Mexico, and more recently, South America. This species can cause serious damage to various vegetable crops in the genus Brassica, with seedlings being particularly susceptible to B. hilaris feeding activity. In this study, the role of volatile organic compounds (VOCs) emitted by seedlings of three Brassica species on the host preference of B. hilaris was evaluated. In dual choice arena and olfactometer bioassays, adult painted bugs preferred B. oleracea var. botrytis and B. napus over B. carinata. Volatiles from B. oleracea seedlings were collected and bioassayed with B. hilaris adults and late stage nymphs, using electroantennographic (EAG) and behavioral (olfactometer) techniques. When crude extracts of the VOCs from B. oleracea var. botrytis seedlings and liquid chromatography fractions thereof were bioassayed, B. hilaris adults and nymphs were attracted to the crude extract, and to a non-polar fraction containing hydrocarbons, whereas there were no responses to the more polar fractions. GC-MS analysis indicated that the main constituents of the non-polar fraction was an as yet unidentified diterpene hydrocarbon, with trace amounts of several other diterpene hydrocarbons. The major diterpene occurred in VOCs from both of the preferred host plants B. oleracea and B. napus, but not in VOCs of B. carinata. Our results suggest that this diterpene, alone or in combination with one or more of the minor compounds, is a key mediator in this insect-plant interaction, and could be a good candidate for use in lures for monitoring B. hilaris in the field.
- Subjects :
- 0106 biological sciences
Life Cycles
Brassica
Plant Science
01 natural sciences
chemistry.chemical_compound
Bioassay
Multidisciplinary
Ecology
biology
Organic Compounds
Eukaryota
Plants
Chemistry
Physical Sciences
Medicine
Research Article
Nymph
food.ingredient
General Science & Technology
Science
Host-Parasite Interactions
Heteroptera
food
Plant-Animal Interactions
Botany
Hexanes
Animals
Botrytis
Volatile Organic Compounds
Biochemistry, Genetics and Molecular Biology (all)
Bagrada hilaris
Host (biology)
Plant Ecology
Ecology and Environmental Sciences
Organic Chemistry
Brassica napus
Organisms
Chemical Compounds
Biology and Life Sciences
Plant-Herbivore Interactions
biology.organism_classification
Hydrocarbons
Nymphs
010602 entomology
Settore AGR/11 - Entomologia Generale E Applicata
Agricultural and Biological Sciences (all)
chemistry
Olfactometer
Seedlings
Diterpene
Developmental Biology
010606 plant biology & botany
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- PLOS ONE
- Accession number :
- edsair.doi.dedup.....1d1794994e6a88de2e29c81cb148a457