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. 2020 Feb 5;10:1735. doi: 10.3389/fpls.2019.01735

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Copyright © 2020 Wang, Chen, Liu, Wang, Wen and Zhang

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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(A–C) Shows the changes in vein traits along the aridity gradient. AI, aridity index. Insignificant regression lines are shown in dotted lines (P > 0.05). Trait abbreviations are provided in Table 1 .