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. 2011 Nov 4;63(2):859–870. doi: 10.1093/jxb/err314

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© 2011 The Author(s).

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)

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Fig. 2. — Calibration of the pH indicator SNARF in the root cap apoplast. Ratio image of SNARF fluorescence in the root tips M. xiaojinensis. The image was pseudocolour-coded according to the scale (pH 4.3–6.8) on the right. (A, C, E) Plants were treated with normal Fe for 1, 3, or 6 d, respectively. (B, D, F) Plants were treated with 0 μM Fe for 1, 3, or 6 d, respectively.