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. 2022 Dec 19;191(3):1953–1967. doi: 10.1093/plphys/kiac586

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© The Author(s) 2022. Published by Oxford University Press on behalf of American Society of Plant Biologists.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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OsbZIP46 positively regulates ABA-modulated root elongation and root swelling. (A and B) Representative propidium iodide staining of longitudinal sections of root tips (A) and radial sections of root elongation zone (B) of 4-d-old Nip, OsbZIP46 knockout and overexpression seedlings with or without 0.5 μM ABA treatment. White arrows indicate the proximal end of the root meristem. White rectangle insets are an enlargement (three times magnification) of the regions at the proximal end of the root meristem. Bars = 100 μm. (C–E) Length (C) and cortical cell number (D) of the root meristem zones and root diameter (E) of the corresponding seedlings indicated in panels (A) and (B). Data are means ± SD (n ≥ 10 independent seedlings). Different letters indicate significant differences (P < 0.05, one-way ANOVA with Tukey's test).