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. 2019 Mar 9;15:22. doi: 10.1186/s13007-019-0406-z

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Observation of abnormal phragmoplast formation in the ktn1-2 and mpk4 mutants. a, b Single optical section (a) and maximum intensity projection (b) of an early phragmoplast of a ktn1-2 cytokinetic root cell, showing an area with extensively branched microtubules (a, inset) at the phragmoplast periphery. c, d Single optical section (c) and maximum intensity projection (d) of an aberrant late phragmoplast of the ktn1-2 mutant. Excessive microtubule branching (arrowheads) is observed within the phragmoplast (a, c; inset). e Ectopic and abortive phragmoplast of an aberrant root epidermal cell of the mpk4 mutant. Bars in e = 10 μm; c, d = 5 μm; a, b = 2 μm; insets of a and c = 1 μm