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T. W. OCHELTREE, J. B. NIPPERT and P. V. V. PRASAD Changes in stomatal conductance along grass blades reflect changes in leaf structure Plant, Cell & Environment 35

Version of Record online: 6 JAN 2012 | DOI: 10.1111/j.1365-3040.2011.02470.x

We investigated the coordinated change in leaf structure and function along grass blades. Photosynthesis and stomatal conductance increased acropetally from base to tip, which was correlated with a decreased pathlength for the movement of water from the vascular bundle to stomate. The decreased pathlength for water movement should allow greater stomatal conductance while minimizing the water potential gradient across the leaf mesophyll. These results highlight the tight correlation between changes in leaf structure and function within individual grass blades.

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