A summary of the major physiological traits determined by analysis of leaf gas exchange of plant exposed to various CO2 and light treatments, as in Figures B and C in S1 File.

Respiration values were calculated as the average of 3 replicates when the light level was 0 μmol m-2 s-1, the light compensation point, and quantum yield were calculated from a regression line (y = mx+b) fitted to the values between the light levels of 0–100 μol m-2 s-1. The photosynthetic max (Pnmax) was calculated from f = yo+a(1-e(-b*x)). Note, quantum yield and Pnmax are given on a leaf area basis and a chlorophyll basis to show the difference when expressing data on two different normalization factors.