Spodoptera frugiperda Caterpillars Suppress Herbivore-Induced Volatile Emissions in Maize

Lange, Elvira S. de; Laplanche, Diane; Guo, Huijuan; Xu, Wei; Vlimant, Michèle; Erb, Matthias; Ton, Jurriaan; Turlings, Ted C. J.

doi:10.1007/s10886-020-01153-x

Cited by 75 publications

(47 citation statements)

References 116 publications

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“…Methyl salicylate (MeSA), a volatile released from damaged soybean leaves, is a collective foraging signal for the larvae of Loxostege sticticalis [45]. Spodoptera frugiperda, an invasive insect pest in Africa and Asia, inhibits HIPVs emissions from maize [46]. S. littoralis caterpillars can utilize host-derived indole emissions to reduce their suitability and attractiveness to parasitoids by changing the smell of caterpillars [47].…”

Section: Discussionmentioning

confidence: 99%

Exposure of Helicoverpa armigera Larvae to Plant Volatile Organic Compounds Induces Cytochrome P450 Monooxygenases and Enhances Larval Tolerance to the Insecticide Methomyl

Ding

Shi

et al. 2021

Insects

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Plants release an array of volatile chemicals into the air to communicate with other organisms in the environment. Insect attack triggers emission of herbivore-induced plant volatiles (HIPVs). How insect herbivores use these odors to plan their detoxification systems is vital for insect adaptation to environmental xenobiotics. Here we show that the larvae of Helicoverpa armigera (Hübner), a broadly polyphagous lepidopteran herbivore, have the capacity to use plant volatiles as cues to upregulate multiple detoxification systems, including cytochrome P450 monooxygenases (P450s), for detoxification of insecticides. Olfactory exposure of the fifth instars to two terpene volatiles limonene and nerolidol, and two green-leaf volatiles 2-heptanone and cis-3-hexenyl acetate significantly reduced larval susceptibility to the insecticide methomyl. However, larval pretreatment with piperonyl butoxide (PBO), a known P450 inhibitor, neutralized the effects of volatile exposure. Furthermore, larval exposure to the four plant volatiles enhanced activities of P450 enzymes in midguts and fatbodies, and upregulated expression of CYP6B2, CYP6B6 and CYP6B7, P450s involved in detoxification of the insecticide. Larval exposure to 2-heptanone and limonene volatiles also enhanced activities of glutathione-s-transferase and carboxylesterase. Our findings suggest that olfactory exposure to HIPVs enhances larval insecticide tolerance via induction of detoxification P450s.

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Section: Discussionmentioning

confidence: 99%

Exposure of Helicoverpa armigera Larvae to Plant Volatile Organic Compounds Induces Cytochrome P450 Monooxygenases and Enhances Larval Tolerance to the Insecticide Methomyl

Ding

Shi

et al. 2021

Insects

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“…If standards were unavailable, tentative identifications were made based on referenced mass-spectra available from NIST (Scientific Instrument Services, Inc, Ringoes, NJ, USA) or based on a previous study ( Xiao et al, 2012 ; Jiao et al, 2018 ). Relative quantifications of compounds were first based on their integrated areas related to the internal standard ( De Lange et al, 2020 ). This does not allow for very precise quantification, but provides accurate information for comparisons among volatile collections.…”

Section: Methodsmentioning

confidence: 99%

Caterpillar-induced rice volatiles provide enemy-free space for the offspring of the brown planthopper

Liu

et al. 2020

eLife

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Plants typically release large quantities of volatiles in response to herbivory by insects. This benefits the plants by, for instance, attracting the natural enemies of the herbivores. We show that the brown planthopper (BPH) has cleverly turned this around by exploiting herbivore-induced plant volatiles (HIPVs) that provide safe havens for its offspring. BPH females preferentially oviposit on rice plants already infested by the rice striped stem borer (SSB), which are avoided by the egg parasitoid Anagrus nilaparvatae, the most important natural enemy of BPH. Using synthetic versions of volatiles identified from plants infested by BPH and/or SSB, we demonstrate the role of HIPVs in these interactions. Moreover, greenhouse and field cage experiments confirm the adaptiveness of the BPH oviposition strategy, resulting in 80% lower parasitism rates of its eggs. Besides revealing a novel exploitation of HIPVs, these findings may lead to novel control strategies against an exceedingly important rice pest.

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“…Insect attack typically induces defense responses in plants [38][39][40][41] , but it is also increasingly evident that various insect herbivores have the ability to, at least partially, suppress plant defenses by interfering with JA or SA biosynthesis and that this can enhance their own performance and that of conspecifics 28,[42][43][44][45] . This can also benefit certain other species that feed on the same plants.…”

Section: Discussionmentioning

confidence: 99%

Cooperative herbivory between two important pests of rice

Liu

et al. 2021

Preprint

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Normally, when different species of herbivorous arthropods feed on the same plant this leads to fitness reducing competition. We found this to be uniquely different for two of Asia's most destructive rice pests, the brown planthopper and the rice striped stem borer. Both insects directly and indirectly benefit from jointly attacking the same host plant. Double infestation improved plant quality, particularly for the stemborer because the planthopper fully suppresses caterpillar-induced production of proteinase inhibitors. It also drastically reduced the risk of egg parasitism, due to diminished parasitoid attraction. Females of both pests have adapted their oviposition behaviour accordingly. Their strong preference for plants infested by the other species even overrides their avoidance of plants already attacked by conspecifics. This uncovered cooperation between herbivores is telling of the exceptional adaptations resulting from the evolution of plant-insect interactions, and points out mechanistic vulnerabilities that can be targeted to control two major pests.

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Spodoptera frugiperda Caterpillars Suppress Herbivore-Induced Volatile Emissions in Maize

Abstract: This is a repository copy of Spodoptera frugiperda caterpillars suppress herbivore-induced volatile emissions in maize.

Cited by 75 publications

References 116 publications

Exposure of Helicoverpa armigera Larvae to Plant Volatile Organic Compounds Induces Cytochrome P450 Monooxygenases and Enhances Larval Tolerance to the Insecticide Methomyl

Exposure of Helicoverpa armigera Larvae to Plant Volatile Organic Compounds Induces Cytochrome P450 Monooxygenases and Enhances Larval Tolerance to the Insecticide Methomyl

Caterpillar-induced rice volatiles provide enemy-free space for the offspring of the brown planthopper

Cooperative herbivory between two important pests of rice

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