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. 2010 Aug 25;62(1):195–203. doi: 10.1093/jxb/erq260

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© 2010 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. 3. — Stomatal sensitivity to CO₂ relative to foliar ABA level in S. minimus (A), C. rhomboidea (B), and P. radiata (C). Three individuals are represented by different symbols, with a representative individual from each species linked with arrows indicating the transition from two initial well-watered states, two states on the initial day following rewatering, and a subsequent day post-drought recovery. A significant regression (R²=0.57; P <0.01) described the sensitivity of S. minimus stomata to C_a [C_a = 2.745 (1-e-0.0032ABA_f)] as indicated by the solid line, although neither conifer species presented a significant relationship. Mean foliar ABA level ±SE (n=3) for pre-drought, and the 4 d post-drought recovery are also shown for S. minimus (D), C. rhomboidea (E), and P. radiata (F). Vertical dashed lines separate pre-drought unstressed ABA levels from levels following drought recovery.