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Fig. 4 | BMC Plant Biology

Fig. 4

From: Anatomically induced changes in rice leaf mesophyll conductance explain the variation in photosynthetic nitrogen use efficiency under contrasting nitrogen supply

Fig. 4

The relationship between photosynthetic nitrogen use efficiency (PNUE) and the ratio of Rubisco to leaf N content (Rubisco/NL) (a), the difference between intercellular CO2 concentration and chloroplast CO2 concentration (Ci-Cc) (b), the ratio of mesophyll conductance to chloroplast surface area exposed to intercellular airspace (gm/Sc) (c), and the ratio of chloroplast surface area exposed to intercellular airspace to Rubisco (Sc/Rubisco) (d). Data represent the mean of 4 replicates for PNUE, Rubisco, NL, Ci, Cc, gm and at least 15 replicates for Sc. The line in the figure represents the following regression equation: y = 0.0299x – 0.0019, R2 = 0.9700, P < 0.01

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