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. 2015 Jul 6;6:505. doi: 10.3389/fpls.2015.00505

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Copyright © 2015 Drisch and Stahl.

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) or licensor 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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Arabidopsis meristematic zone organization and regulation of WOX5 expression in the QC. (A) Schematic representation of an Arabidopsis meristematic zone. The stem cell niche (outlined in black) contains the QC cells (red), the cortex/endodermis initials (green), stele initials (orange), lateral root cap/epidermis initials (purple), and CSCs (blue). ep, epidermis; c, cortex; en, endodermis; LRC, lateral root cap; CC, columella cells. Gray dots indicate starch granules. (B) Regulational model highlighting the complex interplay of phytohormones, TFs and signaling peptides on WOX5 expression levels and domain. Arrows indicate positive, barred lines indicate negative regulations.