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    Author(s): Carlo Calfapietra; Amy E. Wiberley; Tanya G. Falbel; Autumn R. Linskey; Guiseppe Scarascia Mugnozza; David F. Karnosky; Francesco Loreto; Thomas D. Sharkey
    Date: 2007
    Source: Plant, Cell and Environment. 30: 654-661.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (246.54 KB)


    Emission of hydrocarbons by trees has a crucial role in the oxidizing potential of the atmosphere. In particular, isoprene oxidation leads to the formation of tropospheric ozone and other secondary pollutants. It is expected that changes in the composition of the atmosphere will influence the emission rate of isoprene, which may in turn feedback on the accumulation of pollutants and greenhouse gases. We investigated the isoprene synthase (ISPS) gene expression and the ISPS protein levels in aspen trees exposed to elevated ozone (O3) and/or elevated carbon dioxide (CO2) in field-grown trees at the Aspen Free-Air Carbon Dioxide Enrichment (FACE) experimental site.

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    Calfapietra, Carlo; Wiberley, Amy E.; Falbel, Tanya G.; Linskey, Autumn R.; Mugnozza, Guiseppe Scarascia; Karnosky, David F.; Loreto, Francesco; Sharkey, Thomas D. 2007. Isoprene synthase expression and protein levels are reduced under elevated O3 but not under elevated CO2 (FACE) in field-grown aspen trees. Plant, Cell and Environment. 30: 654-661.


    Populus, forestry plantations, global change, VOC

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