Increased adaxial stomatal density is associated with greater mesophyll surface area exposed to intercellular air spaces and mesophyll conductance in diverse C₄ grasses

• Mesophyll conductance (g m) is the diffusion of CO₂ from intercellular air spaces (IAS) to the first site of carboxylation in the mesophyll cells. In C₃ species, g m is influenced by diverse leaf structural and anatomical traits; however, little is known about traits affecting g m in C₄ species. •...

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