Bellasio, Chandra; Quirk, Joe; Beerling, David J.
By the end of the century, atmospheric CO₂ concentration ([CO₂]a) could reach 800 ppm, having risen from ~200 ppm ~24 Myr ago. Carbon dioxide enters plant leaves through stomata that limit CO₂ diffusion and assimilation, imposing stomatal limitation (LS). Other factors limiting assimilation are collectively called non-stomatal limitations (LNS). C₄ photosynthesis concentrates CO₂ around Rubisco, typically reducing LS. C₄-dominated savanna grasslands expanded under low [CO₂]a and are...[Show more]
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