Innate responses of the parasitoidsCotesia glomerata andC. rubecula (Hymenoptera: Braconidae) to volatiles from different plant-herbivore complexes

Geervliet, J.B.F.; Vet, L.E.M.; Dicke, Marcel

doi:10.1007/bf02213877

Cited by 112 publications

(95 citation statements)

References 25 publications

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“…This indicates that subtle differences in volatile profiles of uninfested plants could be important in the attractivity of these plants for D. semiclausum. Brussels sprout plants damaged by hosts are more attractive for the parasitoids Cotesia glomerata, C. rubecula, and C. plutellae than artificially damaged or intact Brussels sprout plants (Steinberg et al, 1992(Steinberg et al, , 1993Blaakmeer et al, 1994;Geervliet et al, 1996;Shiojiri et al, 2000). A recent study by Ohara et al (2003) showed that D. semiclausum females were attracted by the odor blends of uninfested and infested cruciferous plants.…”

Section: Discussionmentioning

confidence: 99%

“…In natural ecosystems, host-parasitoid interactions take place in habitats composed of several to many plant species, where both the expectancy of the host's presence and the specificity of volatile infochemicals may show great between-and within-plant variation (Takabayashi et al, 1994;De Moraes et al, 1998;Vet, 1999;Gouinguené, 2001). Variation in odors among plant species and cultivars can be greater than between damaged and undamaged conspecific plants (Geervliet et al, 1997), and such differences can be reflected in the attractance of parasitoids to plants (Elzen et al, 1983(Elzen et al, , 1986Fox and Eisenbach, 1992;Geervliet et al, 1996). The differential ability of plants to attract natural enemies may even be responsible for further dietary specialization of herbivores exploiting specific plant taxa like the Cruciferae (Yano, 1994).…”

Section: Introductionmentioning

confidence: 99%

“…These compounds play a role in the host searching behavior of parasitoid species that forage on hosts associated with plants of this family (Read et al, 1970(Read et al, , 1985Shiojiri et al, 2001;Smid et al, 2002). Other studies show effects of inter-and intraspecific variation in volatiles of cruciferous plants on their attractivity to parasitoids (Geervliet et al, 1996;Liu and Jiang, 2003;Kalule and Wright, 2004). Fox and Eisenbach (1992) found that Diadegma insulare, a parasitoid of larvae of Plutella xylostella L., preferred wild crucifers to collards.…”

Section: Introductionmentioning

confidence: 99%

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Variation In Plant Volatiles and Attraction Of The ParasitoidDiadegma semiclausum(Hellén)

et al. 2005

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Abstract-Differences in allelochemistry of plants may influence their ability to attract parasitoids. We studied responses of Diadegma semiclausum (Hellén), a parasitoid of the diamondback moth (Plutella xylostella L.), to inter-and intraspecific variation in odor blends of crucifers and a non-crucifer species. Uninfested Brussels sprout (Brassica oleracea L. gemmifera), white mustard (Sinapis alba L.), a feral Brassica oleracea, and malting barley (Hordeum vulgare L.) were compared for their attractivity to D. semiclausum in a Y-tube bioassay. Odors from all plants were more attractive to the parasitoid than clean air. However, tested against each other, parasitoids preferred the volatile blend from the three cruciferous species over that of malting barley. Wasps also discriminated between uninfested crucifers: mustard was as attractive as feral B. oleracea, and both were more attractive than Brussels sprout. Attractivity of uninfested plants was compared with that of plants infested by larvae of the host P. xylostella. Host-infested mustard and Brussels sprout were more attractive than uninfested conspecifics. Interestingly, the volatile blends of uninfested white mustard and infested Brussels sprout were equally attractive. We also compared the volatile composition of different plant sources by collecting headspace samples and analysing them with GC-MS. Similarities of volatile profiles were determined by hierarchic clustering and non-metric scaling based on the Horn-index. Due to the absence of several compounds in its blend, the volatile profile of barley showed dissimilarities from blends of crucifers. The odor profile of white mustard was distinctly different from the two Brassicaceae. * To whom correspondence should be addressed. E-mail: tibor.bukovinszky@wur.nl Feral Brassica oleracea odor profile was different from infested Brussels sprout, but showed overlap with uninfested Brussels sprout. Odor blends from infested and uninfested Brussels sprout were similar, and mainly quantitative differences were found. D. semiclausum appears to discriminate based on subtle differences in volatile composition of odor blends from infested and uninfested plants.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variation In Plant Volatiles and Attraction Of The ParasitoidDiadegma semiclausum(Hellén)

et al. 2005

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“…That volatile blends can differ in their attractiveness is evident from various studies that show differential attraction mediated by odors of different plant species attacked by the same herbivore (Drost et al, 1988;McAuslane et al, 1991;Geervliet et al, 1996;De Moraes and Lewis, 1999). Also within one plant species, however, there can be considerable variation in attractiveness among genotypes.…”

Section: Introductionmentioning

confidence: 98%

The Role of Fresh versus Old Leaf Damage in the Attraction of Parasitic Wasps to Herbivore-Induced Maize Volatiles

Hoballah

Turlings

2005

J Chem Ecol

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Abstract-The odor produced by a plant under herbivore attack is often used by parasitic wasps to locate hosts. Any type of surface damage commonly causes plant leaves to release so-called green leaf volatiles, whereas blends of inducible compounds are more specific for herbivore attack and can vary considerably among plant genotypes. We compared the responses of naïve and experienced parasitoids of the species Cotesia marginiventris and Microplitis rufiventris to volatiles from maize leaves with fresh damage (mainly green leaf volatiles) vs. old damage (mainly terpenoids) in a six-arm olfactometer. These braconid wasps are both solitary endoparasitoids of lepidopteran larvae, but differ in geographical origin and host range. In choice experiments with odor blends from maize plants with fresh damage vs. blends from plants with old damage, inexperienced C. marginiventris showed a preference for the volatiles from freshly damaged leaves. No such preference was observed for inexperienced M. rufiventris. After an oviposition experience in hosts feeding on maize plants, C. marginiventris females were more attracted by a mixture of volatiles from fresh and old damage. Apparently, C. marginiventris has an innate preference for the odor of freshly damaged leaves, and this preference shifts in favor of a blend containing a mixture of green leaf volatiles plus terpenoids, after experiencing the latter blend in association with hosts. M. rufiventris responded poorly after experience and preferred fresh damage odors. Possibly, after associative learning, this species uses cues that are more directly related with the host presence, such as volatiles from host feces, which were not present in the odor sources offered in the olfactometer. The results demonstrate the complexity of the use of plant * To whom correspondence should be addressed. E-mail: ted.

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“…Volatiles of different plant species, including Arabidopsis, that are infested with P. rapae caterpillars are known to attract C. rubecula females (Agelopoulos and Keller 1994a;Geervliet et al 1994Geervliet et al , 1996Van Poecke et al 2001). The headspace of P. rapae-infested Arabidopsis plants contains nitriles that may originate from the frass of the caterpillars or the wounded plant tissue (Van Poecke et al 2001;Van Poecke 2007;Wittstock et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Formation of Simple Nitriles upon Glucosinolate Hydrolysis Affects Direct and Indirect Defense Against the Specialist Herbivore, Pieris rapae

et al. 2008

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The glucosinolate-myrosinase system, found in plants of the order Brassicales, has long been considered an effective defense system against herbivores. The defensive potential of glucosinolates is mainly due to the products formed after myrosinase-catalyzed hydrolysis upon tissue damage. The most prominent hydrolysis products, the isothiocyanates, are toxic to a wide range of organisms, including herbivorous lepidopterans. In contrast, little is known about the biological activities of alternative hydrolysis products such as simple nitriles and epithionitriles that are formed at the expense of isothiocyanates in the presence of epithiospecifier proteins (ESPs). Here, we used transgenic Arabidopsis thaliana (Brassicaceae) plants overexpressing ESP (35S:ESP plants) to investigate the effects of simple nitriles on direct and indirect defense against the specialist cabbage white butterfly Pieris rapae L. (Lepidoptera, Pieridae). In the 35S:ESP plants, glucosinolates are hydrolyzed mainly to simple nitriles upon tissue disruption, while isothiocyanates are the predominant hydrolysis products in Columbia-0 (Col-0) wild-type plants. The parasitoid Cotesia rubecula (Hymenoptera, Braconidae), a specialist on P. rapae larvae, was significantly more attracted to P. rapaeinfested 35S:ESP plants than to P. rapae-infested Col-0 wild-type plants in a wind tunnel setup. Furthermore, female P. rapae butterflies laid more eggs on Col-0 wild-type plants than on 35S:ESP plants when the plants had been damaged previously. However, when given a choice to feed on 35S: ESP or Col-0 plants, caterpillars did not discriminate between the two genotypes. Growth rate and developmental time were not significantly different between caterpillars that were reared on 35S:ESP or Col-0 plants. Thus, the production of simple nitriles instead of isothiocyanates, as catalyzed by ESP, can promote both direct and indirect defense against the specialist herbivore P. rapae.

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Innate responses of the parasitoidsCotesia glomerata andC. rubecula (Hymenoptera: Braconidae) to volatiles from different plant-herbivore complexes

Cited by 112 publications

References 25 publications

Variation In Plant Volatiles and Attraction Of The ParasitoidDiadegma semiclausum(Hellén)

Variation In Plant Volatiles and Attraction Of The ParasitoidDiadegma semiclausum(Hellén)

The Role of Fresh versus Old Leaf Damage in the Attraction of Parasitic Wasps to Herbivore-Induced Maize Volatiles

Formation of Simple Nitriles upon Glucosinolate Hydrolysis Affects Direct and Indirect Defense Against the Specialist Herbivore, Pieris rapae

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