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Host plants alter their volatiles to help a solitary egg parasitoid distinguish habitats with parasitized hosts from those without
- Source :
- Plant, Cell & Environment. 43:1740-1750
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- When attacked by herbivores, plants emit volatiles to attract parasitoids and predators of herbivores. However, our understanding of the effect of plant volatiles on the subsequent behaviour of conspecific parasitoids when herbivores on plants are parasitized is limited. In this study, rice plants were infested with gravid females of the brown planthopper (BPH) Nilaparvata lugens for 24 hr followed by another 24 hr in which the BPH eggs on plants were permitted to be parasitized by their egg parasitoid, Anagrus nilaparvatae; volatiles from rice plants that underwent such treatment were less attractive to subsequent conspecific parasitoids compared to the volatiles from plants infested with gravid BPH females alone. Chemical analysis revealed that levels of JA and JA-Ile as well as of four volatile compounds-linalool, MeSA, α-zingiberene and an unknown compound-from plants infested with BPH and parasitized by wasps were significantly higher than levels of these compounds from BPH-infested plants. Laboratory and field bioassays revealed that one of the four increased chemicals-α-zingiberene-reduced the plant's attractiveness to the parasitoid. These results suggest that host plants can fine-tune their volatiles to help egg parasitoids distinguish host habitats with parasitized hosts from those without.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Physiology
Wasps
Zoology
Plant Science
Real-Time Polymerase Chain Reaction
01 natural sciences
Host-Parasite Interactions
Parasitoid
Predation
Hemiptera
03 medical and health sciences
chemistry.chemical_compound
Animals
Bioassay
Ovum
Volatile Organic Compounds
Herbivore
biology
Host (biology)
Jasmonic acid
fungi
food and beverages
Oryza
biology.organism_classification
Hymenoptera
030104 developmental biology
chemistry
Habitat
Plant Defense Against Herbivory
Brown planthopper
010606 plant biology & botany
Subjects
Details
- ISSN :
- 13653040 and 01407791
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- Plant, Cell & Environment
- Accession number :
- edsair.doi.dedup.....71d64e2f14f9a42eed62f6efe2bb8bd6