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. 2020 Jan 24;10:1748. doi: 10.3389/fpls.2019.01748

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Copyright © 2020 Zhuang, Wang, Zhang, Chen, Wang, Liu, Zhou and Chai

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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Stem water potential and xylem vessel cell numbers of WT, PdC3H17OE, and PdC3H17ΔCOE poplars. (A) Statistical analysis of stem water potential of 4-month-old WT, PdC3H17OE (17OE), and PdC3H17ΔCOE (17ΔCOE) poplars under well-watered and drought stress conditions for 20 days. (B) Statistical analysis of the numbers of stem xylem vessel cells in 3-month-old WT, 17OE, and 17ΔCOE poplars. At least six plants from two lines in each genotype were selected for measurement of stem water potential and xylem vessel cells. Data are presented as mean ± SD. Different letters above bars denote statistical significance between treatments of samples (P < 0.05). (C) Basal stem sections of 3-month-old representative WT, PdC3H17OE, and PdC3H17ΔCOE plants. Bars = 100 μm.