Articles | Volume 19, issue 5
Atmos. Chem. Phys., 19, 3125–3135, 2019
Atmos. Chem. Phys., 19, 3125–3135, 2019

Research article 12 Mar 2019

Research article | 12 Mar 2019

A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis

Luca Cappellin et al.

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Subject: Biosphere Interactions | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Affek, H. P. and Yakir, D.: Protection by Isoprene against Singlet Oxygen in Leaves, Plant Physiol., 129, 269–277,, 2002. 
Affek, H. P. and Yakir, D.: Natural Abundance Carbon Isotope Composition of Isoprene Reflects Incomplete Coupling between Isoprene Synthesis and Photosynthetic Carbon Flow, Plant Physiol., 131, 1727–1736,, 2003. 
Alméras, E., Stolz, S., Vollenweider, S., Reymond, P., Mène-Saffrané, L., and Farmer, E. E.: Reactive electrophile species activate defense gene expression in Arabidopsis, Plant J., 34, 205–216,, 2003. 
Behnke, K., Ehlting, B., Teuber, M., Bauerfeind, M., Louis, S., Hänsch, R., Polle, A., Bohlmann, J., and Schnitzler, J.-P.: Transgenic, non-isoprene emitting poplars don't like it hot, Plant J., 51, 485–499,, 2007. 
Short summary
MEK is an important VOC in atmospheric chemistry and recently it has been shown that biogenic sources are globally as important as anthropogenic ones. We unveiled the mechanism by which within-plant transformation of MVK is a source of biogenic MEK. Such transformation is observed in red oak for both exogenous MVK, taken up from the atmosphere, and endogenous MVK generated within plant when it experiences stress (e.g. heat stress). The new mechanism is important for inclusion in models.
Final-revised paper