Dynamics and mechanisms of volatile organic compound exchanges in a winter wheat field

Bachy, Aurélie; Aubinet, Marc; Amelynck, Crist; Schoon, Niels; Bodson, Bernard; Delaplace, Pierre; Ligne, Anne De; Digrado, Anthony; Jardin, Patrick du; Fauconnier, Marie‐Laure; Mozaffar, Ahsan; Müller, Jean-François; Heinesch, Bernard

doi:10.1016/j.atmosenv.2019.117105

Cited by 19 publications

(39 citation statements)

References 88 publications

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“…We found methanol fluxes remarkably comparable to (Bachy et al, 2020), giving strength to these estimations. In terms of temporal dynamics, our study shows an emission increase towards senescence (Figure 7), with a maximum emission coinciding with the end of the chlorosis period and the decline of photosynthesis (Figure 5).…”

Section: Most Emitted Compounds and Comparison With Existing Literatusupporting

confidence: 84%

“…In terms of temporal dynamics, our study shows an emission increase towards senescence (Figure 7), with a maximum emission coinciding with the end of the chlorosis period and the decline of photosynthesis (Figure 5). 500 An increase of methanol emissions during senescence was also observed at the canopy scale by Bachy et al (2020) on wheat and at the leaf scale by Mozaffar et al (2018) on maize, and Gonzaga et al (2020, submitted). These observations suggest that cereal crops are a major source of methanol at the end of culture cycle with net emission rates possibly exceeding those during the vegetative growth phase.…”

Section: Most Emitted Compounds and Comparison With Existing Literatumentioning

confidence: 88%

“…There are only very few studies reporting VOC fluxes from wheat, and only one from whole wheat canopy (Table 1). All existing studies have shown that methanol is the most emitted 495 compound by wheat with contributions ranging between 20 and 80% depending on the study site, measurement method and scale, weather conditions and phenological stage (Bachy et al, 2020;Gonzaga Gomez et al, 2019).…”

Section: Most Emitted Compounds and Comparison With Existing Literatumentioning

confidence: 99%

“…So far, few studies investigated VOC fluxes from crops on chambers (Copeland et al, 2012;Crespo et al, 2013;Das et al, 2003;Eller et al, 2011;Gonzaga Gomez et al, 2019;Graus et al, 2013;Konig et al, 1995;Wiss et al, 2017). Flux measurements at canopy level on crops are still rare, and rather focused on orchards and grasslands (Bachy et al, 2020;Bachy et 65 al., 2018;Bachy et al, 2016;Berhongaray et al, 2017;Brilli et al, 2016;Copeland et al, 2012;Fares et al, 2012;Karl et al, 2001;Karl et al, 2005;Miresmailli et al, 2013;Misztal et al, 2014;Portillo-Estrada et al, 2018;Zenone et al, 2016). Gallagher et al (2000) studied BVOC fluxes from above arable land by relaxed eddy accumulation.…”

Section: Introductionmentioning

confidence: 99%

“…Bachy et al (2016) reported fluxes of isoprene, monoterpenes, methanol, acetone, acetaldehyde and acetic acid from a maize field, which revealed lower emission than those parameterised in the MEGAN and 70 ORHIDEE models (Messina et al, 2016). In a follow-up study, Bachy et al (2020) reported the first measurements of VOC fluxes above a winter wheat field by eddy covariance with a quadrupole PTRMS. More measurements have been reported above grassland (Bamberger et al, 2010;Custer and Schade, 2007;Muller et al, 2010;Ruuskanen et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance

Loubet

Buysse

Gonzaga-Gomez

et al. 2021

Preprint

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Abstract. Volatile organic compounds (VOC) contribute to air pollution through the formation of secondary aerosols and ozone and contribute to increasing the lifetime of methane in the atmosphere. Tropospheric VOC are 90 % originating from biogenic sources at the global scale. Forests are the main contributors to these emissions with isoprene and monoterpenes being the most emitted compounds. Crops are also a potentially large, yet poorly characterised, source of VOC. In particular, measurements of VOC fluxes for wheat at the ecosystem scale are scarce, although this is the most cultivated crop in Europe. Available evidence indicates that crops may contribute to 30% of the VOC emissions in Europe, especially oxygenated, low-molecular-weight VOC such as methanol, acetone and acetaldehyde. In this study, which is part of the COV3ER French national project, we investigated VOC fluxes over a wheat field in-situ by eddy covariance using a PTR-Qi-TOF-MS with an outmost sensitivity and mass resolution. We found 264 compounds to have a flux three times above the flux detection limit. Methanol was the most emitted compound, with an averaged flux of 63 µg m−2 h−1, representing around 60 % of summed VOC emissions on a molar basis (40 % on a mass basis). This finding is in line with previous measurements at canopy and plant scales. We also measured acetone, acetaldehyde and dimethyl sulphide among the five most emitted compounds. The second most emitted VOC corresponded to the ion m/z 93.037, tentatively identified as C6H4O. This compound was not reported previously as one of the most emitted compound by terrestrial ecosystems. Summed VOC emissions amounted around 150 µg m−2 h−1. Summed VOC deposition amounted to around −125 µg m−2 h−1, which represented about 70 % of the VOC emissions on a mass basis. The most depositing VOC were tentatively identified as hydroxyacetone and fragments of oxidised VOC with a flux of −16 µg m−2 h−1. Overall, our results reveal that wheat fields represent a non-negligible source and sink of VOC to be considered in regional VOC budgets, and underline the usefulness and limitations of eddy covariance measurements with PTR-Qi-TOF-MS.

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Section: Most Emitted Compounds and Comparison With Existing Literatusupporting

confidence: 84%

Section: Most Emitted Compounds and Comparison With Existing Literatumentioning

confidence: 88%

Section: Most Emitted Compounds and Comparison With Existing Literatumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance

Loubet

Buysse

Gonzaga-Gomez

et al. 2021

Preprint

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Microbial Volatile Organic Compounds from Tempered and Incubated Grain Mediate Attraction by a Primary but Not Secondary Stored Product Insect Pest in Wheat

et al. 2021

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There has been a dearth of research elucidating the behavioral effect of microbially-produced volatile organic compounds on insects in postharvest agriculture. Demonstrating attraction to MVOC’s by stored product insects would provide an additional source of unique behaviorally-relevant stimuli to protect postharvest commodities at food facilities. Here, we assessed the behavioral response of a primary (Rhyzopertha dominica) and secondary (Tribolium castaneum) grain pest to bouquets of volatiles produced by whole wheat that were untempered, or tempered to 12%, 15%, or 19% grain moisture and incubated for 9, 18, or 27 days. We hypothesized that MVOC’s may be more important for the secondary feeder because they signal that otherwise unusable, intact grains have become susceptible by weakening of the bran. However, contrary to our expectations, we found that the primary feeder, R. dominica, but not T. castaneum was attracted to MVOC’s in a wind tunnel experiment, and in a release-recapture assay using commercial traps baited with grain treatments. Increasing grain moisture resulted in elevated grain damage detected by near-infrared spectroscopy and resulted in small but significant differences in the blend of volatiles emitted by treatments detected by gas chromatography coupled with mass spectrometry (GC–MS). In sequencing the microbial community on the grain, we found a diversity of fungi, suggesting that an assemblage was responsible for emissions. We conclude that R. dominica is attracted to a broader suite of MVOC’s than T. castaneum, and that our work highlights the importance of understanding insect-microbe interactions in the postharvest agricultural supply chain.

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Making use of biogenic volatile organic compounds in sustainable agriculture and from aquatic ecosystems

Brilli,

Gallo,

Balestreri

2024

Biogenic Volatile Organic Compounds and Climate Change

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Dynamics and mechanisms of volatile organic compound exchanges in a winter wheat field

Cited by 19 publications

References 88 publications

Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance

Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance

Microbial Volatile Organic Compounds from Tempered and Incubated Grain Mediate Attraction by a Primary but Not Secondary Stored Product Insect Pest in Wheat

Making use of biogenic volatile organic compounds in sustainable agriculture and from aquatic ecosystems

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