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Differential response of Aspen and Birch trees to heat stress under elevated carbon dioxideAuthor(s): Joseph N.T. Darbah; Thomas D. Sharkey; Carlo Calfapietra; David F. Karnosky
Source: Environmental Pollution. 158: 1008-1014.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
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DescriptionThe 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.
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CitationDarbah, 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.
Keywordsaspen, birch, free air carbon dioxide enrichment, photosynthesis, isoprene, stomatal conductance, thermotolerance
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