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. 2014 Oct 21;166(4):2040–2050. doi: 10.1104/pp.114.248294

Figure 7.

Figure 7.

Contributions of LCIA and LCIB to O2 evolution and CO2 inhibition of LCIA-dependent photosynthesis. A and B, Contributions to O2 evolution activities of LCIA and LCIB. Contribution of LCIA to O2 evolution activities in ad1 as a function of CO2 (A) or HCO3− (B) concentration at pH 6.0 (white squares) and pH 7.3 (black diamonds). The LCIA contribution was calculated by subtracting photosynthetic O2 evolution activity in lab1 from that in ad1. C, Contributions of LCIA and LCIB to photosynthesis as a function of the CO2 concentration. The contribution of LCIA (black circles) was calculated as above, and the contribution of LCIB (black triangles) was calculated by subtracting photosynthetic O2 evolution activity in ad1 from that in wild-type (cw10) cells. In all cases, CO2 and HCO3− concentrations are calculated from total Ci concentration and pH, assuming that the addition of CA maintains CO2-HCO3− equilibrium.