As trees photosynthesize, using carbon from the atmosphere to grow and store energy, they also lose water to the air (transpire). During a drought, continuing to photosynthesize and transpire puts trees at risk of...
Tag - hydraulic conductivity
William Salter
Hydraulic architecture of Eucalyptus grandis
A comprehensive understanding of the systems behind vertical transport of water in tall trees is crucial when predicting the susceptibility of these long-lived organisms to drought. Pfautsch et al. use detailed...
botanyone
Suberised barriers support composite water and solute transport in barley roots
Roots possess complex anatomical structures characterised by suberised apoplastic barriers that are deposited in localised cell wall layers. Barley roots lack an exodermis, but form an endodermis that accounts for the...
Aquaporin function and exogenous application of abscisic acid (ABA) to barley roots
Using an immunochemical approach to reveal the link between changes in abscisic acid (ABA) levels, aquaporin function and changes in root cell hydraulic conductivity (LpCell), Sharipova et al. compared the abundance of...
Rhizosphere biophysics and root water uptake
The combination of soil drying and a high transpiration rate causes severe water stress in plants. In their Viewpoint article, Carminati et al. develop a biophysical model to describe how low soil moisture and high...
What sets apart individual trees that died versus trees that survived an extreme drought?
Plant responses to drought involve multiple interacting traits and processes, which complicates predictions about which plants will die and which will survive. Species are often characterized by species-specific...
Danielle Marias
Developmental changes in root hydraulics (Research in Context)
A study of barley plants during the early stages of vegetative development (9–28 d old) to determine by what means root water uptake is increased.
Wood density and functional differentiation of axial and radial parenchyma
The functional relationship between cell types and three xylem functions of conduction, support and storage using approximately 800 tree species from China.
AJ Cann
Hydraulic adjustment in a pine species across its range
The ability of P. canariensis to inhabit a wide range of ecosystems seems to be associated with high phenotypic plasticity.
Development of the midrib xylem during leaf expansion
The water-transport capacity of leaf venation is positively related to the leaf-lamina area, because the number and diameter of vein-xylem conduits are properly controlled to match the lamina area. Taneda and...
Stem hydraulic traits and leaf phenology
The co-occurrence of evergreen and deciduous species in tropical dry forests suggests the existence of different water-use strategies among the species. Fu et al. study six evergreen and six deciduous tree species co...
Functional plasticity in the hydraulic system
Functional plasticity in a plant’s hydraulic architecture may constitute a mechanistic basis for anticipating the differential success of plant species in response to climate variability. von Arx et al. compare several...
