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. 2020 Feb 10;144(1):85–99. doi: 10.1007/s11120-020-00716-z

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Values of CO₂ compensation point C_i* [identified as the intercept at the C_i-axis of the initial strictly linear part of leaf gross CO₂ assimilation rate (A + R_d) versus C_i] plotted as a function of the O₂ levels, for tomato and rice leaves