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. 2009 Oct 8;61(1):121–130. doi: 10.1093/jxb/erp287

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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/uk/) 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. 6. — Nodule organic acid compostition. Data are the means of four replicates. Bars represent standard deviation. An asterisk indicates a statistically significant difference from the +CO₂ treatment (t test, P ≤0.05). (A) Total amount of organic acids in nodules per plant. (B) Concentration of detected organic acids in nodules.