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. 2014 Jul 22;65(18):5305–5315. doi: 10.1093/jxb/eru292

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© The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.

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 reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 7. — Effect of Al on the change of IAA concentration and rhizosphere pH. (A) The concentration of free IAA in root tips. (B) Amount of IAA secretion per rice seedling. Values are means±SE (n=3). Means with different letters are significantly different (P<0.05 by Tukey test). (C) Semi-quantitative RT-PCR analysis of OsA gene expression. Histone H3 was used as loading control. (D) Colour changes in bromocresol green agar medium. The colour of the medium around the roots changed to yellow showing that the pH in the rhizosphere had decreased. (This figure is available in colour at JXB online.)