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. 2013 Sep 4;64(14):4403–4419. doi: 10.1093/jxb/ert251

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© The Author 2013. 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. — Four hypotheses for evolution of GA oxidases. The analyses (A and B) performed with either PRANK or MUSCLE alignment refer to the trees of Supplementary Fig. S3A and B at JXB online, respectively. Neither analysis confirms the monophyly of GA2ox proteins (C and D). The difference between hypotheses A and B relies only on the different position of the root. Both hypotheses support the C₁₉-GA2ox as sister of GA3ox, suggesting a unique origin of C₁₉ metabolism. (This figure is available in colour at JXB online.)