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. 2010 Apr 2;61(9):2491–2497. doi: 10.1093/jxb/erq078

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© 2010 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/2.5), 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. A1. — Three electrical resistance analogues corresponding to the three measurement set-ups in Fig. 1A, B, and C, respectively. Symbols: R_rsi the resistance of root-solution interface; R_ssi the resistance of stem-solution interface; R_sol the resistance of the solution; R_stem the resistance of the stem above solution interface.