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. 2019 Jun 4;10:660. doi: 10.3389/fpls.2019.00660

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Copyright © 2019 Aung, Masuda, Nozoye, Kobayashi, Jeon, An and Nishizawa.

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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Cellular localization of OsNAS3 promoter-GUS expression in roots. (A) Transverse section of control root. (B) Transverse section of Fe-excess root. (C,D) Enlarged views of vascular tissues shown in (A,B), respectively. (E) An enlarged view of xylem and phloem shown in (D). (F,G) Enlarged views of outer root layers shown in (A,B), respectively. (H) Longitudinal section of control root. (I) Longitudinal section of Fe-excess root. LR, lateral root; MXI, metaxylem I; MXII, metaxylem II; PP, protophloem; CC, companion cells; EN, endodermis; Pr, pericycle; PX, protoxylem; EX, exodermis; EP, epidermis; Co, cortex; VB, vascular bundle. Scale bars: 20 μm for (A–D,F,G); 100 μm for (H,I).