The Induction of Volatile Emissions in Maize by Three Herbivore Species with Different Feeding Habits: Possible Consequences for Their Natural Enemies

Turlings, Ted C. J.; Bernasconi, Marco; Bertossa, Rinaldo C.; Bigler, F.; Caloz, Geneviève; Dorn, Silvia

doi:10.1006/bcon.1997.0591

Cited by 232 publications

(181 citation statements)

References 27 publications

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“…quality), there was a difference in the quantity and relative proportion of these compounds released. Insect herbivory often causes an increase in volatile output or a quantitative change (Takabayashi et al 1995;Turlings et al 1990Turlings et al , 1998; interestingly in our system, there was a general reduction in volatile output. Insects have the ability not only to perceive but also to compare the relative quantities of compounds involved in selecting a host plant (Visser 1986).…”

Section: Fig 3 Mean Percentages (±Sd) Of Number Of Times Tetheredmentioning

confidence: 56%

“…Several studies demonstrated that most plant species respond to feeding by herbivores with a blend of de novo synthesized volatiles, released by plants only when attacked by herbivores (Takabayashi et al 1995;Turlings et al 1990Turlings et al , 1998. These herbivore-induced plant volatiles also play a major role in attracting specialized parasitoids, which use these volatiles as cues when searching for their host (DeMoraes et al 2001;Faeth and Bultman 2002).…”

Section: Introductionmentioning

confidence: 99%

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Influence of an endophytic fungus on host plant selection by a polyphagous moth via volatile spectrum changes

Jallow

Dugassa‐Gobena

Vidal

2008

Arthropod-Plant Interactions

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Recently the role of micro-organisms as mediators of plant-herbivore interactions has been increasingly acknowledged in ecological research. We investigated the interaction between an unspecialized root fungal endophyte (Acremonium strictum) and the polyphagous moth Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), in greenhouse and laboratory bioassays. Specifically we examined in tomato (Lycopersicon esculentum Mill.) the systemic effects of the endophytic fungus on the host selection behaviour of female moths for oviposition and the volatile profiles of host plants to understand the mechanisms acting in this multi-trophic model system. Both laboratory and field strains of H. armigera moths oviposited more on leaves of A. strictum inoculated plants as compared to endophyte-free plants, both in free flight cages and in tethered moth laboratory experiments; the moth's preferences were significant between 10 and 18 days after inoculation. The analysis of volatile profiles showed strong quantitative differences between treatments. Endophyte inoculated plants emitted diverse terpenes and sesquiterpenes at significantly lower amounts as compared to endophyte free-plants, except for a-terpinene, which did not differ between the treatments, and trans-bcaryophyllene, which was emitted in significantly higher amounts on inoculated plants. b-Thujene and a-phellandrene accounted for 73.3 and 12.0% of total amounts of volatiles emitted from endophyte-free and inoculated plants, respectively. Our findings demonstrate that A. strictum is able to systemically influence the host selection of H. armigera moths for oviposition; conceivably mediated by the induced changes in volatile emissions (and probably additional biochemical parameters of the host plants, which have not been analysed so far). We argue for a more detailed assessment of micro-organisms invisibly colonizing plants, when studying plant-herbivore or multitrophic interactions.

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Section: Fig 3 Mean Percentages (±Sd) Of Number Of Times Tetheredmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Influence of an endophytic fungus on host plant selection by a polyphagous moth via volatile spectrum changes

Jallow

Dugassa‐Gobena

Vidal

2008

Arthropod-Plant Interactions

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“…Chemical analysis of variation in headspace composition among plants of the same species that are infested by different herbivores has been performed for seven plant species: apple (Takabayashi et al, 1991), corn (Turlings et al, 1993a(Turlings et al, , 1998Takabayashi et al, 1995;de Moraes et al, 1998), cabbage (Figure 1) (Blaakmeer et al, 1994;Agelopoulos & Keller, 1994b;Geervliet et al, 1997), nasturtium , broad bean (Du et al, 1998), tobacco and cotton (de Moraes et al, 1998). In all cases quantitative differences among volatile blends have been reported (e.g., Figure 1).…”

Section: Variation In Chemical Composition Of Blends Of Herbivore-indmentioning

confidence: 99%

“…Studies that support a specificity of herbivoreinduced plant volatiles (e.g., Sabelis & van de Baan, 1983;Takabayashi et al, 1995;Du et al, 1996;Powell et al, 1998;de Moraes et al, 1998) as well as data that do not support such a specificity (e.g., Turlings et al, 1993bTurlings et al, , 1998Mattiacci & Dicke, 1995;Röse et al, 1998) have been presented for different plantherbivore-carnivore systems. It may very well be that the degree of reliability is system-specific.…”

Section: Introductionmentioning

confidence: 99%

Are herbivore‐induced plant volatiles reliable indicators of herbivore identity to foraging carnivorous arthropods?

Dicke

1999

Entomologia Exp Applicata

252

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Plants that are damaged by herbivorous arthropods provide carnivorous enemies of the herbivores with important information. They emit an induced volatile blend that is highly detectable to the carnivores from a distance. Such detectable signals that indicate herbivore presence are important for the carnivores because herbivores themselves are under strong selection not to expose themselves. In addition, carnivores would benefit from a specificity of the induced plant volatiles. Whether herbivore-induced plant volatiles are reliable indicators of herbivore identity, however, has not been resolved unambiguously. Some studies support the reliability of herbivore-induced plant volatiles, while others do not. Different approaches have been used such as chemical analysis, behavioural analysis or a combination of the two. Based on the total of chemical studies one might conclude that in most cases herbivore-induced plant volatiles are not very specific for the herbivore that damages the plant. However, arthropod chemosensors are much more sensitive than the detectors of analytical instruments. Therefore, chemical analyses are not suitable to demonstrate whether or not herbivore-induced plant volatiles are reliable indicators of herbivore identity to carnivores. Behavioural studies should provide this information. In analysing carnivore behaviour it should be realised, however, that arthropod behaviour can be highly variable. Arthropod foraging decisions are affected by external and internal factors such as (a) abiotic environmental factors, (b) presence of competitors or enemies, (c) deprivation of food or oviposition sites, (d) specific deprivation of certain nutrients or (e) learning. In this paper their effect on discrimination of carnivores between volatile blends emitted by plants infested by different herbivores is reviewed. This provides testable hypotheses of why discrimination was not found in some studies. The ability of carnivores to discriminate is likely to be more common than is clear to date, which should invoke functional studies of the conditions that influence the occurrence of this discrimination.

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“…Herbivore-induced volatiles also serve as key foraging cues for natural enemies of the feeding herbivores, including insect predators and parasitoids (e.g. Turlings et al, 1998) and even for insectivorous birds (Mäntylä et al, 2008). Moreover, these signals can convey complex and highly specific information about the status of emitting plants.…”

Section: Alarm Signals In Plantsmentioning

confidence: 99%

Alarm Pheromones—Chemical Signaling in Response to Danger

Verheggen¹,

Haubruge²,

Mescher³

2010

Vitamins &Amp; Hormones

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In this chapter we discuss our current understanding of chemical alarm signaling in a variety of animal groups (including social and pre-social insects, marine invertebrates, fish, and mammals) and in plants. We also briefly discuss the exploitation of alarm pheromones as foraging cues for natural enemies. We conclude with a brief discussion of the potential exploitation of alarm signaling to achieve the applied goal of managing pest species.

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The Induction of Volatile Emissions in Maize by Three Herbivore Species with Different Feeding Habits: Possible Consequences for Their Natural Enemies

Cited by 232 publications

References 27 publications

Influence of an endophytic fungus on host plant selection by a polyphagous moth via volatile spectrum changes

Influence of an endophytic fungus on host plant selection by a polyphagous moth via volatile spectrum changes

Are herbivore‐induced plant volatiles reliable indicators of herbivore identity to foraging carnivorous arthropods?

Alarm Pheromones—Chemical Signaling in Response to Danger

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