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. 2012 Nov 21;7(11):e49641. doi: 10.1371/journal.pone.0049641

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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Instantaneous water-use efficiency, the ratio of photosynthesis to conductance (A/g_s) at 65–70% relative humidity and 390 ppm CO₂ (A) after a rapid increase of [CO₂] to 800 ppm (B) and after a rapid decrease in relative humidity to 25% (C). The data are averaged values (± se) for 4 to 5 plants for each genotype. The T-DNA insertion lines tested are as in Figure 5. WT, wild type; _* p<0.05;+p<0.1.