JUAN PEDRO FERRIO, ALÍCIA POU, IGOR FLOREZ-SARASA, ARTHUR GESSLER, NAOMI KODAMA, JAUME FLEXAS and MIQUEL RIBAS-CARBÓ The Péclet effect on leaf water enrichment correlates with leaf hydraulic conductance and mesophyll conductance for CO2 Plant, Cell & Environment 35
Effective pathlength (L) is a parameter of leaf water enrichment model, theoretically related to water pathways from veins to evaporative sites. This work relates for the first time L with measurable mesophyll variables, such as leaf lamina hydraulic conductance (Klam) or mesophyll conductance for CO2 (gm). The study combines experimental drought and vein cutting treatments in Grenache grapevine with a meta-analysis on published data of L and hydraulic conductance. The strong correlation found between L, Klamina and gm supports the idea that water and CO2 share an important part of their diffusion pathways through the mesophyll.
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