Fig. 4From: Elevated CO2 can modify the response to a water status gradient in a steppe grass: from cell organelles to photosynthetic capacity to plant growthEffects of elevated CO2 on photosynthetic capacity (a, V c,max; b, J max; c, TPU; e, A sat), stomatal conductance (f, g s), intrinsic water use efficiency (g, WUEi), maximal photochemistry efficiency (d, F v/F m) and photochemical efficiency of open reaction centers of PSII (h, F' v/F' m) with water status gradient. V c,max, maximum rate of carboxylation; J max, maximum rate of electron transport, TPU, rate of thiose phosphate utilization; A sat, light-saturated maximum photosynthetic rate. For watering treatment and bar details, see Fig. 2 Back to article page