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. 2020 Apr 21;11:392. doi: 10.3389/fpls.2020.00392

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Copyright © 2020 Voothuluru, Mäkelä, Zhu, Yamaguchi, Cho, Oliver, Simmonds and Sharp.

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(s) 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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Growth trajectories (A) and temporal relative elongation rate profiles (B) of the primary root of CK44 oxalate oxidase transgenic (Trans) and wild-type lines growing under well-watered (WW) or water-stressed (WS; –1.6 MPa) conditions. Growth trajectories were used to determine the times required for cells to move from the distal end of the meristem to more basal locations, and were obtained by plotting position versus the integrated local displacement time. The relative elongation rate corresponding to a particular position (Figures 5E,F) was then plotted against the integrated displacement time to obtain the temporal relative elongation rate profiles (B). The total residence times of cells within the growth zone were not significantly different between the transgenic and wild-type lines in either well-watered or water-stressed comparisons (t-test; P > 0.1).