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. 2018 Jun 1;9:693. doi: 10.3389/fpls.2018.00693

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Copyright © 2018 Stewart, Polutchko, Demmig-Adams and Adams.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The (A) rate of transpirational water loss, (B) ratio of transpirational water loss to CO₂ uptake, (C) product of the number of xylem cells per minor vein and vein density, and (D) product of the number of tracheary elements per minor vein and vein density in leaves of the Col-0 (violet columns) and low-vein-density Ei-5 (indigo columns) accessions of A. thaliana grown under a 9-h photoperiod of 1000 μmol photons m^-2 s^-1 at a leaf temperature of 20°C. Mean values ± standard deviations for (A,B) and ± standard errors for (C,D); n = 4. The asterisks denote significant differences between the mean values; ^∗∗P < 0.01, ^∗∗∗P < 0.001.