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Fig. 5 | BMC Plant Biology

Fig. 5

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

Fig. 5

The relationships between the leaf-N content (NL) and the estimated and theoretical chloroplast CO2 concentration (Cc) (a, b) and the estimated and theoretical mesophyll conductance (gm) (c, d) under NH4+ (a, c) and NO3− (b, d) nutrition. Each point represents one replicate (four replicates per treatment). The dashed lines represent the theoretical chloroplast CO2 concentration and mesophyll conductance, which were calculated according to the ratio of Cc/Rubisco and gm/Rubisco constant at low-N levels, and the theoretical Cc and gm at intermediate and high N levels was Rubisco (intermediate or high N) × (Cc/Rubisco or gm/Rubisco (low N)). The lines represent the estimated Cc and gm. Rice leaves supplied with NH4+ (AN) or NO3− (NN) under 3 different amounts, low N (0.71 mM, LAN and LNN), intermediate N (2.86 mM, MAN and MNN), and high N (7.14 mM, HAN and HNN)

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BMC Plant Biology

ISSN: 1471-2229

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