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. 2019 Dec 6;10:1577. doi: 10.3389/fpls.2019.01577

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Copyright © 2019 Kiss, Wolverton, Wyatt, Hasenstein and van Loon

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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Plastid position in central columella cells of root tips of Arabidopsis seedlings grown on the ground (GR), during spaceflight (FL), on a random positioning machine (RPM), and on a clinostat (CL). These cells are involved in gravity perception (Kiss, 2000). There is no statistical difference (P > 0.05) between the FL and RPM samples as indicated by *, while the FL samples are significantly different (P < 0.05) from the CL specimens as indicaated by ** and determined by an ANOVA followed by a Tukey post-test.