Changes in volatile compounds of Dittrichia viscosa caused by the attack of the gall-forming dipteran Myopites stylatus

Santos, Sónia A.P.; Mota, Luís; Malheiro, Ricardo; Silva, Franceli da; Campos, Mercedes; Pinho, Paula Guedes de; Pereira, José Alberto

doi:10.1016/j.indcrop.2016.04.002

Cited by 7 publications

(9 citation statements)

References 36 publications

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“…Eucalyptol is known for its insect-repellent (Edwards et al, 1993;Sfara et al, 2009) and insecticide effects (Sabraoui et al, 2016). Its production is often stimulated by herbivory (Torres-Gurrola et al, 2011;Santos et al, 2016). On the other hand, β-bourbonene and farnesene were upregulated only in galled leaves.…”

Section: Discussionmentioning

confidence: 99%

Volatile production differs between oak leaves infested by leaf-miner Phyllonorycter harrisella (Lepidoptera: Gracillariidae) and galler Neuroterus quercusbaccarum (Hymenoptera: Cynipidae)

Klimm¹,

Weinhold²,

Volf³

2020

Eur. J. Entomol.

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http://www.eje.cz damaged leaves stimulate parasitoid ovipositional probing behaviour (Dutton et al., 2000) or attract birds (Mäntylä et al., 2008; Amo et al., 2013). HIPVs are highly specifi c to particular species of herbivores (Danner et al., 2018) and act by attracting predators or parasitoids, which makes them an effi cient form of defence against a diverse set of arthropod herbivores (De Moraes et al., 1998; Turlings & Erb, 2018). In response to the proliferation of plant defences, arthropod herbivores have evolved mechanisms like detoxifi cation and sequestration (Heckel, 2014). Many guilds of arthropod herbivores, such as sap-suckers, leaf-chewers, leaf-miners or gallers, have even evolved an ability to manipulate plant metabolic pathways to their own advantage (Mapes & Davies, 2001; Tooker & De Moraes, 2011; Chung et al.,

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Section: Discussionmentioning

confidence: 99%

Volatile production differs between oak leaves infested by leaf-miner Phyllonorycter harrisella (Lepidoptera: Gracillariidae) and galler Neuroterus quercusbaccarum (Hymenoptera: Cynipidae)

Klimm¹,

Weinhold²,

Volf³

2020

Eur. J. Entomol.

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“…While gallers often suppress VOCs, increased VOC production in and around galled tissues may occur. In flower galls produced by the dipteran Myopites stylatus on the woody fleabane Dittrichia viscosa (Asteraceae), emission of the phenylpropene compound estragole, an isomer of anethole, increased six times compared to ungalled flowers ( Santos et al, 2016 ). A moderate increase in anethole was also evident.…”

Section: Impact Of Gall Makers On Plant Volatilesmentioning

confidence: 99%

“…Is eucalyptol being produced in very high quantities to deter galler enemies such as parasitoids or for its antifungal/antibacterial activities? The parasitoids of this tephritid fly species include eurytomid, eupelmid, pteromalid and torymid wasps, and appear to be attracted by gall and/or host cues ( Santos et al, 2016 ). It is also possible that gallers are unable to manipulate VOC release and that VOC emission is under multifactorial control resulting in unexpected VOC emission patterns.…”

Section: Impact Of Gall Makers On Plant Volatilesmentioning

confidence: 99%

The Galling Truth: Limited Knowledge of Gall-Associated Volatiles in Multitrophic Interactions

Borges

2018

Front. Plant Sci.

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Galls are the product of enclosed internal herbivory where the gall maker induces a plant structure within which the herbivores complete their development. For successful sustained herbivory, gall makers must (1) suppress the induction of plant defenses in response to herbivory that is usually mediated through the jasmonic acid pathway and involves volatile organic compound (VOC) production, or (2) have mechanisms to cope with herbivory-induced VOCs, or (3) manipulate production of VOCs to their own advantage. Similarly, plants may have mechanisms (1) to avoid VOC suppression or (2) to attract galler enemies such as parasitoids. While research on VOCs involved in plant–herbivore–parasitoid/predator interactions is extensive, this has largely focussed on the impact of piercing, sucking, and chewing external herbivores or their eggs on VOC emissions. Despite the importance of gallers, owing to their damage to many economically valuable plants, the role of volatiles in gall-associated herbivory has been neglected; exceptions include studies on beneficial gallers and their enemies such as those that occur in brood-site pollination mutualisms. This is possibly the consequence of the difficulties inherent with studying internally occurring herbivory. This review examines the evidence for VOCs in galler attraction to host plants, potential VOC suppression by gallers, increased emission from galls and neighboring tissues, attraction of galler enemies, and the role of galler symbionts in VOC production. It suggests a research focus and ways in which studies on galler-associated VOCs can progress from a philatelic approach involving VOC listing toward a more predictive and evolutionary perspective.

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“…Finally, they play an important role in trophic relations in diverse ecosystems and provide important cues for insects in their search for hosts . Recently, it has been proved that plants, including the olive fruit respond to insect pest attack producing changes in an array of different defensive compounds as phytohormones, VOCs and defence proteins . However, differences in volatile composition can also depend on several factors, such as the olive cultivar, the season, the state of the leaves, geographic and climatic conditions …”

Section: Introductionmentioning

confidence: 99%

“…16 Recently, it has been proved that plants, including the olive fruit respond to insect pest attack producing changes in an array of different defensive compounds as phytohormones, VOCs and defence proteins. 17,18 However, differences in volatile composition can also depend on several factors, such as the olive cultivar, the season, the state of the leaves, geographic and climatic conditions. 19 VOCs are generally analysed by gas chromatography-mass spectrometry (GC-MS) [20][21][22][23] coupled with conventional sampling approaches, [24][25][26][27][28] that are particularly laborious, time consuming and may produce artefacts that will lead to an erroneous interpretation of the VOCs composition.…”

Section: Introductionmentioning

confidence: 99%

Volatolomics approach by HS‐SPME‐GC‐MS and multivariate analysis to discriminate olive tree varieties infected by Xylella fastidiosa

Mentana

Camele

Mang

et al. 2019

Phytochemical Analysis

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Introduction Xylella fastidiosa (Xf) is a pathogenic bacterium that causes diseases in olive trees. Therefore, analytical methods for both the characterisation of the host/pathogen interaction and infection monitoring are needed. Volatile organic compounds (VOCs) are emitted by plants relate to their physiological state, therefore VOCs monitoring can assist in detecting stress or infection states before visible signs are present. Objective In this work, the headspace‐solid phase microextraction‐gaschromatography‐mass spectrometry (HS‐SPME‐GC‐MS) technique was used for the first time to highlight VOCs differences between healthy and Xf‐infected olive trees. Methodology VOCs from olive tree twig samples were extracted and analysed by HS‐SPME‐GC‐MS, and hence identified by comparing the experimental linear retention indexes with the reference values and by MS data obtained from NIST library. Data were processed by principal component analysis (PCA) and analysis of variance (ANOVA). Results The HS‐SPME step was optimised in terms of adsorbent phase and extraction time. HS‐SPME‐GC‐MS technique was applied to the extraction and analysis of VOCs of healthy and Xf‐infected olive trees. More than 100 compounds were identified and the differences between samples were evidenced by the multivariate analysis approach. The results showed the marked presence of methyl esters in Xf‐infected samples, suggesting their probable involvement in the mechanism of diffusible signal factor. Conclusion The proposed approach represents an easy and solvent‐free method to evaluate the presence of Xf in olive trees, and to evidence volatiles produced by host/pathogen interactions that could be involved in the defensive mechanism of the olive tree and/or in the infective action of Xf.

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Changes in volatile compounds of Dittrichia viscosa caused by the attack of the gall-forming dipteran Myopites stylatus

Cited by 7 publications

References 36 publications

Volatile production differs between oak leaves infested by leaf-miner Phyllonorycter harrisella (Lepidoptera: Gracillariidae) and galler Neuroterus quercusbaccarum (Hymenoptera: Cynipidae)

Volatile production differs between oak leaves infested by leaf-miner Phyllonorycter harrisella (Lepidoptera: Gracillariidae) and galler Neuroterus quercusbaccarum (Hymenoptera: Cynipidae)

The Galling Truth: Limited Knowledge of Gall-Associated Volatiles in Multitrophic Interactions

Volatolomics approach by HS‐SPME‐GC‐MS and multivariate analysis to discriminate olive tree varieties infected by Xylella fastidiosa

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