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. 2013 Mar 4;5:plt014. doi: 10.1093/aobpla/plt014

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Published by Oxford University Press on behalf of the Annals of Botany Company.

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

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Figure 2. — Time course of changes with drought in leaves of E. milii in (A) H⁺ content titrated to pH 7.0 (empty circles, dawn; filled circles, dusk); (B) H⁺ content titrated to pH 8.4 (empty circles, dawn; filled circles, dusk); (C) nocturnal H⁺ accumulation (empty triangles, pH 8.4; filled triangles, pH 7.0), and (D) dawn leaf FM per area (circles) and chlorophyll content (triangles). Values are mean ± SE (n = 12). Different letters indicate significant differences at P < 0.05 after a two-way ANOVA (time under drought × hour of day for each pH in A and B) and a one-way ANOVA (time under drought for each pH in C).