Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii

Joó, Éva; Dewulf, Jo; Amelynck, Crist; Schoon, Niels; Pokorska, Olga; Šimpraga, Maja; Steppe, Kathy; Aubinet, Marc; Langenhove, Herman Van

doi:10.1016/j.atmosenv.2011.04.048

Cited by 36 publications

(33 citation statements)

References 36 publications

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“…The same conclusion was drawn by Joó et al (2011) who measured SQT and MeSa emissions from Douglas fir infested by aphids. We found this effect for Scots pine and Norway spruce, which are widespread species in boreal and temperate European forests.…”

Section: Impact Of Heat On Bvoc Emissions Induced By Biotic Stressessupporting

confidence: 58%

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Irreversible impacts of heat on the emissions of monoterpenes, sesquiterpenes, phenolic BVOC and green leaf volatiles from several tree species

Kleist¹,

Mentel²,

Andres³

et al. 2012

Biogeosciences

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Abstract. Climate change will induce extended heat waves to parts of the vegetation more frequently. High temperatures may act as stress (thermal stress) on plants changing emissions of biogenic volatile organic compounds (BVOCs). As BVOCs impact the atmospheric oxidation cycle and aerosol formation, it is important to explore possible alterations of BVOC emissions under high temperature conditions. Applying heat to European beech, Palestine oak, Scots pine, and Norway spruce in a laboratory setup either caused the well-known exponential increases of BVOC emissions or induced irreversible changes of BVOC emissions. Considering only irreversible changes of BVOC emissions as stress impacts, we found that high temperatures decreased the de novo emissions of monoterpenes, sesquiterpenes and phenolic BVOC. This behaviour was independent of the tree species and whether the de novo emissions were constitutive or induced by biotic stress.In contrast, application of thermal stress to conifers amplified the release of monoterpenes stored in resin ducts of conifers and induced emissions of green leaf volatiles. In particular during insect attack on conifers, the plants showed de novo emissions of sesquiterpenes and phenolic BVOCs, which exceeded constitutive monoterpene emissions from pools. The heat-induced decrease of de novo emissions was larger than the increased monoterpene release caused by damage of resin ducts. For insect-infested conifers the net effect of thermal stress on BVOC emissions could be an overall decrease.Global change-induced heat waves may put hard thermal stress on plants. If so, we project that BVOC emissions increase is more than predicted by models only in areas predominantly covered with conifers that do not emit high amounts of sesquiterpenes and phenolic BVOCs. Otherwise overall effects of high temperature stress will be lower increases of BVOC emissions than predicted by algorithms that do not consider stress impacts.

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Section: Impact Of Heat On Bvoc Emissions Induced By Biotic Stressessupporting

confidence: 58%

“…Joó et al (2011) show exponentially increasing emissions of SQT and MeSA with increasing temperature for Douglas fir. This situation is comparable to the cases where we found no GLV emissions and no pool-MT emission pulses.…”

Section: Impact Of Heat On Bvoc Emissions Induced By Biotic Stressesmentioning

confidence: 99%

Irreversible impacts of heat on the emissions of monoterpenes, sesquiterpenes, phenolic BVOC and green leaf volatiles from several tree species

Kleist¹,

Mentel²,

Andres³

et al. 2012

Biogeosciences

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show abstract

“…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: 99%

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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“…They found clearly increased terpenoid emissions from Douglas-fir (Pseudotsuga menziesii) due to biotic and abiotic stresses. Even more interestingly, the responses of different compounds to the stresses varied (Joó et al 2011). For example, the effect of temperature changes on the physical breakdown of litter, via freezing-thawing cycles, is very difficult to predict, compared with its effect on volatility.…”

Section: Effect Of Environmental Factors and Disturbances On Voc Fluxesmentioning

confidence: 99%

“…In addition, the changes in environmental conditions also commonly break molecular structures, causing volatilisation of VOCs, and the effects of these changes on VOC emissions are not predictable. The study of Joó et al (2011) describes well how unpredictable the effects of environmental changes and stresses may be. They found clearly increased terpenoid emissions from Douglas-fir (Pseudotsuga menziesii) due to biotic and abiotic stresses.…”

Section: Effect Of Environmental Factors and Disturbances On Voc Fluxesmentioning

confidence: 99%

Exchange of volatile organic compounds in the boreal forest floor

Aaltonen¹

2012

Diss. For.

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Terrestrial ecosystems, mainly plants, emit large amounts of volatile organic compounds (VOCs) into the atmosphere. In addition to plants, VOCs also have less-known sources, such as soil. VOCs are a very diverse group of reactive compounds, including terpenoids, alcohols, aldehydes and ketones. Due to their high reactivity, VOCs take part in chemical reactions in the atmosphere and thus also affect Earth's radiation balance.In this study, chamber and snow gradient techniques for measuring boreal soil and forest floor VOC fluxes were developed. Spatial and temporal variability in fluxes was studied with year-round measurements in the field and the sources of boreal soil VOCs in the laboratory with fungal isolates. Determination of the compounds was performed mass spectrometrically.This study reveals that VOCs from soil are emitted by living roots, above-and belowground litter and microbes. The strongest source appears to be litter, in which both plant residuals and decomposers play a role in the emissions. Temperature and moisture are the most critical physical factors driving VOC fluxes. Since the environment in boreal forests undergoes strong seasonal changes, the VOC flux strength of the forest floor varies markedly during the year, being highest in spring and autumn. The high spatial heterogeneity of the forest floor was also clearly visible in VOC fluxes. The fluxes of trace gases (CO 2 , CH 4 and N 2 O) from soil, which are also related to the soil biological activity and physical conditions, did not correlate with the VOC fluxes.Our results show that emissions of VOCs from the boreal forest floor accounts for as much as several tens of percent, depending on the season, of the total forest ecosystem VOC emissions. This can be utilized in air chemistry models, which are almost entirely lacking the below-canopy compartment.

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Constitutive versus heat and biotic stress induced BVOC emissions in Pseudotsuga menziesii

Cited by 36 publications

References 36 publications

Irreversible impacts of heat on the emissions of monoterpenes, sesquiterpenes, phenolic BVOC and green leaf volatiles from several tree species

Irreversible impacts of heat on the emissions of monoterpenes, sesquiterpenes, phenolic BVOC and green leaf volatiles from several tree species

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

Exchange of volatile organic compounds in the boreal forest floor

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