Herbivore-induced volatile organic compounds emitted by maize: Electrophysiological responses in Spodoptera frugiperda females

Pinto-Zevallos, Delia M.; Strapasson, Priscila; Zarbin, Paulo H. G.

doi:10.1016/j.phytol.2016.03.005

Cited by 33 publications

(28 citation statements)

References 32 publications

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“…VOC analyses detected significantly increased concentrations of ( E )-2-hexanal, ( Z )-3-hexan-1-ol, ( Z )-3-hexenyl acetate, ( Z )-β-ocimene, linalool, ( E )-4,8-dimethyl-1,3,7-nonatriene (DMNT), ( E )-β-farnese, ( E )-nerolidol, and (3 E ,7 E )-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT) in corn plants induced by larval feeding compared to undamaged control plants ( Figure 3 ). These results are partly consistent with Pinto-Zevallos et al [ 40 ], who conducted similar VOC collections and identified significant differences in the concentrations of thirteen compounds. Pinto-Zevallos et al [ 40 ] and this study both report significant differences in the concentrations ( Z )-3-hexenyl acetate, ( Z )-β-ocimene, linalool, DMNT, ( E )-β-farnese, and TMTT, though there are several differences in the overall VOC profiles and concentrations detected.…”

Section: Discussionsupporting

confidence: 92%

“…These results are partly consistent with Pinto-Zevallos et al [ 40 ], who conducted similar VOC collections and identified significant differences in the concentrations of thirteen compounds. Pinto-Zevallos et al [ 40 ] and this study both report significant differences in the concentrations ( Z )-3-hexenyl acetate, ( Z )-β-ocimene, linalool, DMNT, ( E )-β-farnese, and TMTT, though there are several differences in the overall VOC profiles and concentrations detected. The differences between the results of this study and Pintos-Zevallos et al [ 40 ] may be due to the use of different corn cultivars, as VOC profiles may vary across corn varieties [ 41 ].…”

Section: Discussionsupporting

confidence: 92%

“…Pinto-Zevallos et al [ 40 ] also conducted electroantennaegrams on their identified VOCs, in which ( Z )-3-hexenyl acetate, linalool, DMNT, ( E )-β-farnese, ( E )-nerolidol, and TMTT all elicited antennal responses from the fall armyworm. This combined with the compound identification in this study and possible oviposition deterrent effects mark each as prime candidates for examination in IPM and IRM contexts.…”

Section: Discussionmentioning

confidence: 99%

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Detecting the Conspecific: Herbivory-Induced Olfactory Cues in the Fall Armyworm (Lepidoptera: Noctuidae)

et al. 2021

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The fall armyworm, Spodoptera frugiperda (Smith), is a polyphagous pest whose larval feeding threatens several economically important crops worldwide with especially severe damage to corn (Zea mays L.). Field-derived resistance to several conventional pesticides and Bt toxins have threatened the efficacy of current management strategies, necessitating the development of alternative pest management methods and technologies. One possible avenue is the use of volatile organic compounds (VOCs) and other secondary metabolites that are produced and sequestered by plants as a response to larval feeding. The effects of conspecific larval feeding on fall armyworm oviposition preferences and larval fitness were examined using two-choice oviposition experiments, larval feeding trials, targeted metabolomics, and VOC analyses. There was a significant preference for oviposition on corn plants that lacked larval feeding damage, and larvae fed tissue from damaged plants exhibited reduced weights and head capsule widths. All larval feeding promoted significantly increased metabolite and VOC concentrations compared to corn plants without any feeding. Metabolite differences were driven primarily by linoleic acid (which is directly toxic to fall armyworm) and tricarboxylic acids. Several VOCs with significantly increased concentrations in damaged corn plants were known oviposition deterrents that warrant further investigation in an integrated pest management context.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

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Detecting the Conspecific: Herbivory-Induced Olfactory Cues in the Fall Armyworm (Lepidoptera: Noctuidae)

et al. 2021

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“…In the present study, several of the volatile compounds that were influenced by herbivore infested rice plants were shown to be HIPVs, since they were not produced by uninfested plants, irrespective of the Si status of the plant. These were β-linalool, α-bergamotene, and β-sesquiohellandrene, each of which have been identified as HIPVs in other studies ( Hare, 2011 ; De Backer et al, 2016 ; Pinto-Zevallos et al, 2016 ). Whilst it is possible to record antennal responses for parasitoids to individual HIPVs ( Takemoto and Takabayashi, 2015 ), it is known that blends of HIPVs and the relative quantity of different compounds is more important than any single compound ( Van Wijk et al, 2010 , 2011 ).…”

Section: Discussionmentioning

confidence: 68%

Silicon Supplementation Alters the Composition of Herbivore Induced Plant Volatiles and Enhances Attraction of Parasitoids to Infested Rice Plants

et al. 2017

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Silicon (Si) is important in plant defenses that operate in a direct manner against herbivores, and work in rice (Oryza sativa) has established that this is mediated by the jasmonate signaling pathway. Plant defenses also operate indirectly, by the production of herbivore induced plant volatiles (HIPVs) that attract predators and parasitoids of herbivores. These indirect defenses too are mediated by the jasmonate pathway but no earlier work has demonstrated an effect of Si on HIPVs. In this study, we tested the effect of Si supplementation versus Si deprivation to rice plants on subsequent HIPV production following feeding by the important pest, rice leaffolder (Cnaphalocrocis medinalis). Gas chromatography–mass spectrometry analyses showed lower production of α-bergamotene, β-sesquiohellandrene, hexanal 2-ethyl, and cedrol from +Si herbivore-infested plants compared with -Si infested plants. These changes in plant chemistry were ecologically significant in altering the extent to which parasitoids were attracted to infested plants. Adult females of Trathala flavo-orbitalis and Microplitis mediator both exhibited greater attraction to the HIPV blend of +Si plants infested with their respective insect hosts compared to -Si infested plants. In equivalent studies using RNAi rice plants in which jasmonate perception was silenced there was no equivalent change to the HIPV blend associated with Si treatment; indicating that the effects of Si on HIPVs are modulated by the jasmonate pathway. Further, this work demonstrates that silicon alters the HIPV blend of herbivore-infested rice plants. The significance of this finding is that there are no earlier-published studies of this phenomenon in rice or any other plant species. Si treatment to crops offers scope for enhancing induced, indirect defenses and associated biological control of pests because parasitoids are more strongly attracted by the HIPVs produced by +Si plants.

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“…Injector and transfer line temperatures were set at 200°C. Identification of peaks was done by using NIST 98 library (National Institute of Standards and Technology, Gaithersburg, Maryland) and by comparing with published GC profiles of maize head space volatiles ( Thompson et al, 1971 ; Loughrin et al, 1994 ; McCall et al, 1994 ; Gouinguené et al, 2001 ; Pinto-Zevallos et al, 2016 ; Ngumbi and Ugarte, 2021 ). The structures of the identified volatile compounds were confirmed using commercially available synthetic standards with purity > 97% (as indicated on the labels) obtained from Sigma ® Chemical Co. (St. Louis, Missouri).…”

Section: Methodsmentioning

confidence: 99%

Herbivory Protection via Volatile Organic Compounds Is Influenced by Maize Genotype, Not Bacillus altitudinis-Enriched Bacterial Communities

2022

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Belowground, plants interact with beneficial soil microbes such as plant growth-promoting rhizobacteria (PGPR). PGPR are rhizosphere bacteria that colonize roots and elicit beneficial effects in plants such as improved plant growth, pathogen resistance, abiotic stress tolerance, and herbivore protection. Treatment of plants with PGPR has been shown to trigger the emission of volatile organic compounds (VOCs). Volatile emissions can also be triggered by herbivory, termed herbivore-induced plant volatiles (HIPV), with important ramifications for chemical-mediated plant and insect interactions. Much of our current understanding of PGPR and herbivore-induced volatiles is based on studies using one plant genotype, yet domestication and modern breeding has led to the development of diverse germplasm with altered phenotypes and chemistry. In this study, we investigated if volatile emissions triggered by PGPR colonization and herbivory varies by maize genotype and microbial community assemblages. Six maize genotypes representing three decades of crop breeding and two heterotic groups were used, with four microbiome treatments: live or sterilized soil, with or without a Bacillus inoculant. Soil sterilization was used to delay microbiome establishment, resulting in low-diversity treatments. At planting, maize seeds were inoculated with PGPR Bacillus altitudinis AP-283 and grown under greenhouse conditions. Four weeks post planting, plants were subjected to feeding by third instar Helicoverpa zea (Lepidoptera: Noctuidae) larvae. Volatiles were collected using solid phase microextraction and analyzed with gas chromatography-mass spectrometry. Illumina NovaSeq 16S rRNA amplicon sequencing was carried out to characterize the rhizosphere microbiome. Maize genotype significantly influenced total volatile emissions, and relative abundance of volatile classes. We did not document a strong influence of microbe treatment on plant VOC emissions. However, inoculating plants with PGPR improved plant growth under sterile conditions. Taken together, our results suggest that genotypic variation is the dominant driver in HIPV composition and individual HIPV abundances, and any bacterial-mediated benefit is genotype and HIPV-specific. Therefore, understanding the interplay of these factors is necessary to fully harness microbially-mediated benefits and improve agricultural sustainability.

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Herbivore-induced volatile organic compounds emitted by maize: Electrophysiological responses in Spodoptera frugiperda females

Cited by 33 publications

References 32 publications

Detecting the Conspecific: Herbivory-Induced Olfactory Cues in the Fall Armyworm (Lepidoptera: Noctuidae)

Detecting the Conspecific: Herbivory-Induced Olfactory Cues in the Fall Armyworm (Lepidoptera: Noctuidae)

Silicon Supplementation Alters the Composition of Herbivore Induced Plant Volatiles and Enhances Attraction of Parasitoids to Infested Rice Plants

Herbivory Protection via Volatile Organic Compounds Is Influenced by Maize Genotype, Not Bacillus altitudinis-Enriched Bacterial Communities

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