Figure 4.

Temperature responses of v_c (A) and v_o (B) modeled at pCO₂ and pO₂ expected at the site of Rubisco carboxylation in a C₄ species (400 Pa of CO₂ and 35 kPa of oxygen) compared with corresponding values from the literature normalized to S. viridis at 25°C. The solid lines are the modeled temperature responses of S. viridis from this report, with the 95% confidence intervals in gray. Dashed lines are temperature responses from previous reports normalized to S. viridis at 25°C (Badger and Collatz, 1977; Jordan and Ogren, 1984; Bernacchi et al., 2001, 2002; Walker et al., 2013). A V_cmax of 60 μmol m⁻² s⁻¹ was assumed.