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Title: Isoprene emission rates under elevated CO2 and O3 in two field-grown aspen clones differing in their sensitivity to O3

Author: Calfapietra, Carlo; Mugnozza, Giuseppe Scarascia; Karnosky, David F.; Loreto, Francesco; Sharkey, Thomas D.;

Date: 2008

Source: New Phytologist. 179: 55-61.

Publication Series: Scientific Journal (JRNL)

Description:

Isoprene is the most important nonmethane hydrocarbon emitted by plants. The role of isoprene in the plant is not entirely understood but there is evidence that it might have a protective role against different oxidative stresses originating from heat shock and/or exposure to ozone (O3). Thus, plants under stress conditions might benefit by constitutively high or by higher stress-induced isoprene emission rates. In this study, measurements are presented of isoprene emission from aspen (Populus tremuloides) trees grown in the field for several years under elevated CO2 and O3. Two aspen clones were investigated: the O3-tolerant 271 and the O3-sensitive 42E.

Keywords: carotenoids, dimethylallyl diphosphate (DMADP), elevated CO2, free air CO2 enrichment (FACE), isoprene, ozone (O3) uptake, Populus.

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Citation:


Calfapietra, Carlo; Mugnozza, Giuseppe Scarascia; Karnosky, David F.; Loreto, Francesco; Sharkey, Thomas D. 2008. Isoprene emission rates under elevated CO2 and O3 in two field-grown aspen clones differing in their sensitivity to O3. New Phytologist. 179: 55-61.

 


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