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. 2009 Oct 25;61(2):347–356. doi: 10.1093/jxb/erp306

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© 2009 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. 7. — Effect of Al³⁺ on ethylene evolution from root tips of Arabidopsis wild-type (Col-0) and auxin polar transport mutants, aux1-7 and pin2. (A) Both wild-type and mutants seedlings were treated with 50 μM AlCl₃ (pH 4.5) for 2 h and the ethylene evolution from excised root tips (∼5 mm) was determined. (B) Effect of 10 μM NPA on Al-induced increase of ethylene evolution from root tips ofthe Arabidopsis wild type (Col-0). Seedlings of Col-0 were treated with 10 μM NPA solution for 12 h and then incubated in 50 μM AlCl₃ (pH 4.5) for another 2 h. Values are means ±SE of five replicates.