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. 2019 Mar 1;6:33. doi: 10.1038/s41438-018-0116-0

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a The morphological differences between Cj and Pt along a pH gradient b and the trends of several mineral element levels in the root, stem and leaf of Cj and Pt along a pH gradient c. In this figure, the samples are named “Sample_tissue.”. Pt_root indicates the root tissue of Pt. Bars represent the standard error (n = 3). A single asterisk (*) represents statistically significant differences (P < 0.05), and double asterisks (**) represent highly statistically significant differences (P < 0.01), analyzed using Student’s t-test. Lowercase represents statistically significant differences (P < 0.05), analyzed using one-way ANOVA