The control of water movement through plant, stomatal aperture and growth depend on complex relations with environmental factors. Such relations are characterized by multiple feedbacks, which vary even rapidly with time of the day. In an effort to document and represent intrinsic and environmental controls of tissue hydraulic conductance, Tardieu et al. designed a dynamic model that simulates the coordination of the controls of stomatal aperture, transpiration, leaf growth, and abscisic acid. The model is adaptive for hydraulic processes (e.g. circadian oscillations of root hydraulic conductance contribute to acclimation to water stress) and can be set with genotype-specific parameters.
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