The Péclet effect on leaf water enrichment correlates with leaf hydraulic conductance and mesophyll conductance for CO2

Leaf mesophyll conductance and leaf hydraulic conductance: an introduction to their measurement and coordination.

Two highly contrasting variables summarizing the efficiency of transport of materials within the leaf are recognized as playing central roles in determining gas exchange and plant performance. This paper summarizes current approaches for the measurement of mesophyll conductance to CO2 (g m) and leaf hydraulic conductance (K leaf) and addresses the physiological integration of these parameters. ...

The impact of blue light on leaf mesophyll conductance.

Blue light has many direct and indirect effects on photosynthesis. The impact of blue light on mesophyll conductance (g(m)), one of the main diffusive limitation to photosynthesis, was investigated in leaves of Nicotiana tabacum and Platanus orientalis, characterized by high and low g(m), respectively. Leaves were exposed to blue light fractions between 0% and 80% of incident light intensity (3...

Increasing leaf hydraulic conductance with transpiration rate minimizes the water potential drawdown from stem to leaf

Leaf hydraulic conductance (k leaf) is a central element in the regulation of leaf water balance but the properties of k leaf remain uncertain. Here, the evidence for the following two models for k leaf in well-hydrated plants is evaluated: (i) k leaf is constant or (ii) k leaf increases as transpiration rate (E) increases. The difference between stem and leaf water potential (ΔΨstem-leaf), sto...

Influence of leaf dry mass per area, CO2, and irradiance on mesophyll conductance in sclerophylls.

Leaf photosynthesis (A) is limited by mesophyll conductance (g(m)), which is influenced by both leaf structure and the environment. Previous studies have indicated that the upper bound for g(m) declines as leaf dry mass per area (LMA, an indicator of leaf structure) increases, extrapolating to zero at a LMA of about 240 g m(-2). No data exist on g(m) and its response to the environment for spec...

Influence of salinity on co2 fluxes stomatal conductance and specific leaf eeight of jojoba