Differential response of Aspen and Birch trees to heat stress under elevated carbon dioxide

Joseph N.T. Darbah; Thomas D. Sharkey; Carlo Calfapietra; David F. Karnosky

doi:10.1016/j.envpol.2009.10.019

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Differential response of Aspen and Birch trees to heat stress under elevated carbon dioxide

Formally Refereed

Authors:

Joseph N.T. Darbah, Thomas D. Sharkey, Carlo Calfapietra, David F. Karnosky

Year:

2010

Type:

Scientific Journal

Station:

Northern Research Station

DOI:

https://doi.org/10.1016/j.envpol.2009.10.019

Source:

Environmental Pollution. 158: 1008-1014.

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Abstract

The effect of high temperature on photosynthesis of isoprene-emitting (aspen) and non-isoprene-emitting (birch) trees were measured under elevated CO₂ and ambient conditions. Aspen trees tolerated heat better than birch trees and elevated CO₂ protected photosynthesis of both species against moderate heat stress. Elevated CO₂ increased carboxylation capacity, photosynthetic electron transport capacity, and triose phosphate use in both birch and aspen trees.

Keywords

aspen, birch, free air carbon dioxide enrichment, photosynthesis, isoprene, stomatal conductance, thermotolerance

Citation

Darbah, Joseph N.T.; Sharkey, Thomas D.; Calfapietra, Carlo; Karnosky, David F. 2010. Differential response of Aspen and Birch trees to heat stress under elevated carbon dioxide. Environmental Pollution. 158: 1008-1014.