Heterogeneity of gas exchange rates over the leaf surface in tobacco: an effect of hydraulic architecture?

  title={Heterogeneity of gas exchange rates over the leaf surface in tobacco: an effect of hydraulic architecture?},
  author={Andrea Nardini and Emmanuelle Gortan and Matteo Ramani and Sebastiano Salleo},
  journal={Plant, cell & environment},
  volume={31 6},
Spatial heterogeneity of gas exchange rates in the leaves of Nicotiana tabacum L. (tobacco) was investigated. Leaf conductance to water vapour was higher (by about 18%) at the apical regions of leaves than at the basal ones. Local, small-scale measurements of pressure-volume (PV) parameters and water status (performed with a dewpoint hygrometer) revealed that bulk leaf water potential, osmotic potential, turgor pressure and bulk modulus of elasticity were not significantly different in the leaf… CONTINUE READING

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