Woody plants optimise stomatal behaviour relative to hydraulic risk

Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance

1. The xylem pressure inducing 50% loss of hydraulic conductivity due to embolism (P50) is widely used for comparisons of xylem vulnerability among species and across aridity gradients. However, despite its utility as an index of resistance to catastrophic xylem failure under extreme drought, P50 may have no special physiological relevance in the context of stomatal regulation of daily minimum ...

The F-box gene family is expanded in herbaceous annual plants relative to woody perennial plants.

F-box proteins are generally responsible for substrate recognition in the Skp1-Cullin-F-box complexes that are involved in protein degradation via the ubiquitin-26S proteasome pathway. In plants, F-box genes influence a variety of biological processes, such as leaf senescence, branching, self-incompatibility, and responses to biotic and abiotic stresses. The number of F-box genes in Populus (Po...

An investigation on the possibility of use of chlorophyll fluorescence to study the stomatal behaviour in plants under drought stress

Stomata play a key role in the control of plant water relations and photosynthesis. A rapid non-destructive method to study the stomatal behaviour in aerial parts of plants is important for researchers in plant sciences and agricultural fields. Stomata close in response to drought stress. Stomatal closure causes lower availability of CO2 inside the leaf and thus a decrease in the rate of carbox...

Hydraulic Efficiency and Safety of Xylem Sap Flow in Relation to Water Stress in Woody Plants

Electrophysiology of Woody Plants

A fundamental property of all living organisms is related to the continuous gathering of environmental information and the expression of physiological responses aimed to optimize its performance under new environmental conditions. In order to keep homeostasis, plants need to continuously gather information about its environment and to react physiologically, in order to synchronize its normal bi...