Interestingly,
across growth temperatures, the extent of temperature
homeostasis of photosynthesis was maintained irrespective
of the extent of the change in the optimum temperature for
photosynthesis (Topt), indicating that some plants achieve
greater photosynthesis at the growth temperature by shifting
Topt, whereas others can also achieve greater photosynthesis
at the growth temperature by changing the shape
of the photosynthesis–temperature curve without shifting
Topt. It is considered that these differences in the inherent
stability of temperature acclimation of photosynthesis
would be reflected by differences in the limiting steps of
photosynthetic rate.