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  New perspectives on CO2, temperature, and light effects on BVOC emissions using online measurements by PTR-MS and cavity ring-down spectroscopy

Huang, J., Hartmann, H., Hellén, H., Wisthaler, A., Perreca, E., Weinhold, A., et al. (2018). New perspectives on CO2, temperature, and light effects on BVOC emissions using online measurements by PTR-MS and cavity ring-down spectroscopy. Environmental Science & Technology, 52(23), 13811-13823. doi:10.1021/acs.est.8b01435.

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 Creators:
Huang, Jianbei, Author              
Hartmann, Henrik, Author              
Hellén, Heidi, Author
Wisthaler, Armin, Author
Perreca, Erica1, 2, Author              
Weinhold, Alexander, Author
Rücker, Alexander, Author
van Dam, Nicole M., Author
Gershenzon, Jonathan1, Author              
Trumbore, Susan E., Author              
Behrendt, Thomas, Author              
Affiliations:
1Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              

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 Abstract: Volatile organic compounds (VOC) play important roles in atmospheric chemistry, plant ecology and physiology, and biogenic VOC (BVOC) emitted by plants is the largest VOC source. Our knowledge about how environmental drivers (e.g. carbon, light and temperature) may regulate BVOC emissions is limited because they are often not controlled. We combined a greenhouse facility to manipulate atmospheric CO2 ([CO2]) with proton-transfer-reaction mass spectrometry (PTR-MS) and cavity ring-down spectroscopy to investigate the regulation of BVOC in Norway spruce. Our results indicate a direct relationship between [CO2] and methanol and acetone emissions, and their temperature and light dependences, possibly related to substrate availability. The composition of monoterpenes stored in needles remained constant, but emissions of mono- (i.e. limonene and linalool) and sesquiterpenes (β-farnesene) increased at lower [CO2], with the effects being most pronounced at the highest air temperature. Pulse-labeling suggested an immediate incorporation of recently assimilated carbon into acetone, mono- and sesquiterpene emissions even under 50 ppm [CO2]. Our results provide new perspectives on CO2, temperature and light effects on BVOC emissions, in particular how they depend on stored pools and recent photosynthetic products. Future studies using smaller but more seedlings may allow sufficient replication to examine the physiological mechanisms behind the BVOC responses.

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 Dates: 2018-10-182018-10-182018-11
 Publication Status: Published in print
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 Identifiers: Other: GER530
DOI: 10.1021/acs.est.8b01435
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Title: Environmental Science & Technology
Source Genre: Journal
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Publ. Info: Easton, PA : American Chemical Society
Pages: - Volume / Issue: 52 (23) Sequence Number: - Start / End Page: 13811 - 13823 Identifier: ISSN: 0013-936X
CoNE: https://pure.mpg.de/cone/journals/resource/954921342157