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. 2018 Aug 17;70(9):2419–2434. doi: 10.1093/jxb/ery308

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© The Author(s) 2018. 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/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 8. — Ratio between optimal and control partitioning fractions (optimal p_X/control p_X), and contributions of daily leaf carbon assimilation (DLA) to the daily canopy carbon assimilation (DCA) increase by optimal partitioning (grey bars, right y-axis) along the canopy depth [leaf area index (LAI) m² m⁻²] under 50% average daily photon integral during acclimation (aDPI₅₀) for plants grown under (A) high nitrogen and high light (HN+HL), (B) high nitrogen and low light (HN+LL), (C) low nitrogen and high light (LN+HL), (D) low nitrogen and low light (LN+LL) conditions. Photosynthetic nitrogen partitioning is close to optimum for LN+HL under aDPI₅₀, which corresponds to a DPI of 10.7 and 4.3 mol photons m⁻² d⁻¹ for HL and LL, respectively. The symbols and colors used here are the same as those in Fig. 7. See Table 4 for the increase in DCA by the optimal partitioning.