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. 2011 Sep 21;63(1):293–304. doi: 10.1093/jxb/err279

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© 2011 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/3.0), 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. 2. — Freezing tolerance of acex mutants showing increased induction of CBF2 in response to low temperature. Non-acclimated and cold-acclimated (7 d, 4 °C) 3-week-old WT and mutant (acex8, acex 48, and acex 84) plants were exposed to different freezing temperatures for 6 h. Freezing tolerance was estimated as the percentage of plants surviving each specific temperature after 10 d of recovery under control conditions. (A) Freezing tolerance of non-acclimated plants. (B) Freezing tolerance of cold-acclimated plants. (C) Representative non-acclimated WT and acex8 plants 10 d after being exposed to –7 °C for 6 h. (D) Representative cold-acclimated WT and acex8 plants 10 d after being exposed to –10 °C for 6 h. In A and B, data are expressed as the means of three independent experiments with at least 50 plants each. Bars indicate the SE.