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The cover image is based on the Original Article Retrospective analysis of biochemical limitations to photosynthesis in 49 species: C4 crops appear still adapted to pre‐industrial atmospheric [CO2]by Charles Pignon and Stephen Long, https://doi.org/10.1111/pce.13863 Photo credit: Brian Stauffer (University of Illinois)
Leaf CO2 uptake (A) in C4 photosynthesis is limited by the maximum apparent rate of PEPc carboxylation (Vpmax) at low intercellular [CO2] (ci) with a sharp transition to a ci‐saturated rate (Vmax) due to co‐limitation by ribulose‐1:5‐bisphosphate carboxylase/oxygenase (Rubisco) and regeneration of PEP. The response of A to ci has been widely used to determine these two parameters. Vmax and Vpmax depend...
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