Infestation by a Nalepella species induces emissions of α- and β-farnesenes, (−)-linalool and aromatic compounds in Norway spruce clones of different susceptibility to the large pine weevil

Kännaste, Astrid; Vongvanich, Namphung; Borg‐Karlson, Anna‐Karin

doi:10.1007/s11829-008-9029-4

Cited by 29 publications

(22 citation statements)

References 47 publications

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“…Feeding of Nalepella sp. mites on spruce induces release of (2)-linalool (Kännaste et al 2008). This suggests that (2)-linalool might be a general insect oviposition deterrent produced by larva-damaged foliage, although whether larvadamaged D. wrightii plants produce (2)-linalool remains to be investigated.…”

Section: Discussionmentioning

confidence: 99%

Antagonistic effects of floral scent in an insect–plant interaction

et al. 2010

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In southwestern USA, the jimsonweed Datura wrightii and the nocturnal moth Manduca sexta form a pollinator-plant and herbivore-plant association. Because the floral scent is probably important in mediating this interaction, we investigated the floral volatiles that might attract M. sexta for feeding and oviposition. We found that flower volatiles increase oviposition and include small amounts of both enantiomers of linalool, a common component of the scent of hawkmoth-pollinated flowers. Because (þ)-linalool is processed in a female-specific glomerulus in the primary olfactory centre of M. sexta, we hypothesized that the enantiomers of linalool differentially modulate feeding and oviposition. Using a synthetic mixture that mimics the D. wrightii floral scent, we found that the presence of linalool was not necessary to evoke feeding and that mixtures containing (þ)-and/or (2)-linalool were equally effective in mediating this behaviour. By contrast, females oviposited more on plants emitting (þ)-linalool (alone or in mixtures) over control plants, while plants emitting (2)-linalool (alone or in mixtures) were less preferred than control plants. Together with our previous investigations, these results show that linalool has differential effects in feeding and oviposition through two neural pathways: one that is sexually isomorphic and non-enantioselective, and another that is female-specific and enantioselective.

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Section: Discussionmentioning

confidence: 99%

Antagonistic effects of floral scent in an insect–plant interaction

et al. 2010

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“…We have previously shown that clones of small conifer plants infested by mites release many kinds of compounds, especially terpenes (Kännaste et al 2008). Arimura et al (2000a, b) showed that DMNT and (E)-β-ocimene released by bean plants attacked by the spider mite Tetranychus urticae activate genes involved in the induced defense reaction of intact plants.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, we studied the response of Norway spruce clones with different resistance to the pine weevil [Hylobius abietis (L.)] to the attack of mites of Nalepella sp.. We found the infested spruces to release a flower-like scent, which is a very different from the emissions of healthy plants (Kännaste et al 2008). In the present study, we compared the volatile blends released by a Norway spruce clone infested either by Nalepella sp.…”

Section: Introductionmentioning

confidence: 99%

Volatiles from a Mite-Infested Spruce Clone and Their Effects on Pine Weevil Behavior

et al. 2009

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Induced responses by Norway spruce (Picea abies) seedlings to feeding damage by two mite species were studied by analyzing the volatiles emitted during infestation. Four specimens of a Norway spruce (Picea abies L.) clone were infested with mites of Nalepella sp., another four with Oligonychus ununguis, and four were kept mite-free as controls. After a year of infestation, spruce volatiles were collected, analyzed, and identified using SPME-GC-MS. In addition, enantiomers of chiral limonene and linalool were separated by two-dimensional GC. Methyl salicylate (MeSA), (-)-linalool, (E)-beta-farnesene, and (E,E)-alpha-farnesene were the main volatiles induced by both species of mites, albeit in different proportions. The ability of the main compounds emitted by the mite-infested spruces to attract or repel the pine weevil, Hylobius abietis (L.), was tested. (E)-beta-farnesene was found to be attractive in the absence of spruce odor, whereas methyl salicylate had a deterrent effect in combination with attractive spruce odor. The other tested compounds had no significant effects on the behavior of the weevils.

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“…Although stressinduced emissions bursts have also been observed following enclosure installation (e.g., Arey et al, 1995), all enclosures were allowed to equilibrate prior to sampling for a minimum of 16 h to minimize this risk. Enclosure temperatures remained very close to ambient values for all trees sampled during this first visit, so heat stress was ruled out as a cause of the unusual emissions observed from CT1, which also emitted methyl salicylate as its dominant OVOC during the first sampling period (unlike any other tree sampled), a compound whose emissions are known to be enhanced in many tree species in response to both biotic and abiotic stressors (e.g., Kännaste et al, 2008;Joó et al, 2011). This tree also emitted ∼ 30-50 times more o-cymene and p-cymenene than any of the other trees sampled (data not shown) and had unusual behavior in both MT and SQT profiles through the course of the growing season.…”

Section: Biogeosciencesmentioning

confidence: 96%

Emissions of BVOC from lodgepole pine in response to mountain pine beetle attack in high and low mortality forest stands

et al. 2013

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Abstract. In this screening study, biogenic volatile organic compound (BVOC) emissions from intact branches of lodgepole pine (Pinus contorta) trees were measured from trees at two forested sites that have been impacted differently by the mountain pine beetle (MPB), with one having higher mortality and the other with lower mortality. Differences in the amounts and chemical diversity of BVOC between the two sites and from apparently healthy trees versus trees in different stages of MPB attack are presented, as well as (for one site) observed seasonal variability in emissions. A brief comparison is made of geological and climatic characteristics as well as prior disturbances (both natural and man-made) at each site. Trees sampled at the site experiencing high MPB-related tree mortality had lower chemodiversity in terms of monoterpene (MT) emission profiles, while profiles were more diverse at the lower-mortality site. Also at the higher-mortality site, MPB-infested trees in various stages of decline had lower emissions of sesquiterpenes (SQTs) compared to healthy trees, while at the site with lower mortality, MPB-survivors had significantly higher SQT emissions during part of the growing season when compared to both uninfested and newly infested trees. SQT profiles differed between the two sites and, like monoterpene and oxygenated VOC profiles, varied through the season. For the low-mortality site in which repeated measurements were made over the course of the early summer-late fall, higher chemical diversity was observed in early-compared to late-season measurements for all compound classes investigated (MT, oxygenated VOC, and SQT), with the amount of change appearing to correlate to the MPB status of the trees studied. Emissions of 2-methyl-3-buten-2-ol (MBO) had a distinct seasonal signal but were not much different between healthy or infested trees, except in trees with dead needles, from which emissions of this compound were negligible, and in late-season MPB survivors, in which they were higher than in newly infested or uninfested trees. Emissions of SQT were significantly higher in the MPB survivors during both mid-and late-season sampling at the low-mortality site. The changes in emissions could have implications for regional air quality and climate through changes in ozone and aerosol distributions, although this study was designed as a preliminary screening effort and not enough individuals were sampled for all of the observed differences to be statistically demonstrated. Despite this, the compelling differences in emissions observed between the sites and individual trees with differing MPB-infestation statuses and the potential impacts these have on regional atmospheric chemistry argue for further research in this topic.

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Infestation by a Nalepella species induces emissions of α- and β-farnesenes, (−)-linalool and aromatic compounds in Norway spruce clones of different susceptibility to the large pine weevil

Cited by 29 publications

References 47 publications

Antagonistic effects of floral scent in an insect–plant interaction

Antagonistic effects of floral scent in an insect–plant interaction

Volatiles from a Mite-Infested Spruce Clone and Their Effects on Pine Weevil Behavior

Emissions of BVOC from lodgepole pine in response to mountain pine beetle attack in high and low mortality forest stands

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