Stomatal and non-stomatal limitations in savanna trees and C-4 grasses grown at low, ambient and high atmospheric CO2
By the end of the century, atmospheric CO2 concentration ([CO2](a)) could reach 800 ppm, having risen from similar to 200 ppm similar to 24 Myr ago. Carbon dioxide enters plant leaves through stomata that limit CO2 diffusion and assimilation, imposing stomatal limitation (L-S). Other factors limiting assimilation are collectively called non-stomatal limitations (L-Ns). C-4 photosynthesis concentrates CO2 around Rubisco, typically reducing L-S. C-4-dominated savanna grasslands expanded under low...[Show more]
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