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. 2022 Jun 9;13:897376. doi: 10.3389/fpls.2022.897376

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Copyright © 2022 Liu, Ma, Wang, Chen, Ma and He.

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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Cross-sections of the 6th internode of 2-month-old wild-type and miR395c-OE 84K poplars treated with sulfur deficiency and sulfur or ABA surplus. (a) Cross-section of the wild type. (b) Cross-section of the wild type treated with sulfur deficiency. (c) Cross-section of the wild type added with sulfur. (d) Cross-section of the wild type added with ABA. (e) Cross-section of the miR395c-OE poplar. (f) Cross-section of the miR395c-OE poplar added with sulfur. (g) Cross-section of the miR395c-OE 84K poplar added with ABA. pp, primary phloem; px, primary xylem; c, cambium; vc, vascular cambium; sp, secondary phloem; sx, secondary xylem; ve, vessel. (h) Vessel dimension increased in wild type plants treated with sulfur deficiency and decreased in miR395c-OE plants added with sulfur or ABA. Bar, 50 μm. Asterisks indicate significant difference between transgenic and WT plants using the Student’s t-test, **p < 0.01; ***p < 0.001.