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Identification of biomarker volatile organic compounds released by three stored-grain insect pests in wheat.pdf
Published (Version of Record)CC BY V4.0, Open Access
Journal article
Identification of biomarker volatile organic compounds released by three stored-grain insect pests in wheat
Molecules, Vol.27(6), Article 1963
2022
Abstract
Monitoring and early detection of stored-grain insect infestation is essential to implement timely and effective pest management decisions to protect stored grains. We report a reliable analytical procedure based on headspace solid-phase microextraction coupled with gas chromatography–mass spectrometry (HS-SPME-GC-MS) to assess stored-grain infestation through the detection of volatile compounds emitted by insects. Four different fibre coatings were assessed; 85 µm CAR/PDMS had optimal efficiency in the extraction of analytes from wheat. The headspace profiles of volatile compounds produced by Tribolium castaneum (Herbst), Rhyzopertha dominica (Fabricius), and Sitophilus granarius (Linnaeus), either alone or with wheat, were compared with those of non-infested wheat grains. Qualitative analysis of chromatograms showed the presence of different volatile compound profiles in wheat with pest infestation compared with the wheat controls. Wheat-specific and insect-specific volatile compounds were identified, including the aggregation pheromones, dominicalure-1 and dominicalure-2, from R. dominica, and benzoquinones homologs from T. castaneum. For the first time, the presence of 3-hydroxy-2-butanone was reported from S. granarius, which might function as an alarm pheromone. These identified candidate biomarker compounds can be utilized in insect surveillance and monitoring in stored grain to safeguard our grain products in future.
Details
- Title
- Identification of biomarker volatile organic compounds released by three stored-grain insect pests in wheat
- Authors/Creators
- L. Cai (Author/Creator) - Agriculture and FoodS. Macfadyen (Author/Creator) - Agriculture and FoodB. Hua (Author/Creator) - Northwest A&F UniversityH. Zhang (Author/Creator) - Murdoch UniversityW. Xu (Author/Creator) - Murdoch UniversityY. Ren (Author/Creator) - Murdoch University
- Publication Details
- Molecules, Vol.27(6), Article 1963
- Publisher
- MDPI
- Identifiers
- 991005541325107891
- Copyright
- © 2022 by the authors
- Murdoch Affiliation
- School of Agricultural Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.32 Entomology
- 3.32.1138 Botanical Insecticides
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Chemistry, Multidisciplinary
- ESI research areas
- Chemistry