Atmospheric CO2 concentration does not directly affect leaf respiration in bean or poplar

By S. Jahnke. 2001

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What have we learned from 15 years of free-air CO2 enrichment (FACE)? A meta-analytic review of the responses of photosynthesis, canopy properties and plant production to rising CO2. (2004, methodology): “Elevated [CO2] has been suggested to inhibit dark respiration; however, re-evaluation of the methods used to measure dark respiration under elevated [CO2] suggests that this apparent effect was an artifact of earlier measurement systems, and is absent when these artifacts are eliminated (Amthor, 200”
Rising atmospheric carbon dioxide: plants FACE the future. (2004, background): “More recent analyses show that these apparent decreases in CO 2 evolution in the dark are likely an artifact of the measuring systems used, due to adsorption and absorption of CO 2, and leakage of CO2, both via chamber seals and via the intercellular air spaces of leaves (7, 8, 90, 91).”
Gas exchange measurements, what can they tell us about the underlying limitations to photosynthesis? Procedures and sources of error. (2003, background): “Today it is realized that this conclusion was largely, if not wholly, an artefact of the way these measurements were made (Amthor, 2000; Jahnke, 2001; Jahnke and Krewitt, 2002).”