hydraulics

Anatomical and hydraulic responses to desiccation in emergent conifer seedlings

PREMISE: The young seedling life stage is critical for reforestation after disturbance and for species migration under climate change, yet little is known regarding their basic hydraulic function or vulnerability to drought. Here, we sought to …

Flower Physiology

Defining the physiological dimensions of floral form and evolution

Energy balance implications of floral traits involved in pollinator attraction and water balance

For most angiosperms, flowers are critical to reproduction because they increase rates of outcrossing. Flowers are highly variable in numerous traits, including size, shape, and color. Most of this variation is thought to have arisen because of …

Ramification has little impact on shoot hydraulic efficiency in the sexually dimorphic genus Leucadendron (Proteaceae)

Despite the diversity of branching architectures in plants, the impact of this morphological variation on hydraulic efficiency has been poorly studied. Branch junctions are commonly thought to be points of high hydraulic resistance, but adjustments …

Functional status of xylem through time

Water transport in vascular plants represents a critical component of terrestrial water cycles and supplies the water needed for the exchange of CO2 in the atmosphere for photosynthesis. Yet, many fundamental principles of water transport are dif …

Hydraulic conductance, resistance, and resilience: how leaves of a tropical epiphyte respond to drought

PREMISE: Because of its broad range in the neotropical rainforest and within tree canopies, the tank bromeliad _Guzmania monostachia_ was investigated as a model of how varying leaf hydraulic conductance (Kleaf ) could help plants resist and recover …

Testing the benefits of early vessel evolution

From rainforests to deserts, across latitudes and elevations, the flowering plants (the angiosperms) dominate almost every terrestrial ecosystem. It is impossible not to be amazed and impressed by their abundance and diversity. While their sudden …

Flower physiology is more diverse than leaf physiology

Published paper shows that flower physiological traits covary the same as leaves even though flowers are more hydraulically variable.

Hydraulic traits are more diverse in flowers than in leaves

-Maintaining water balance has been a critical constraint shaping the evolution of leaf form and function. However, flowers, which are heterotrophic and relatively short-lived, may not be constrained by the same physiological and developmental …

Water relations of Calycanthus flowers: Hydraulic conductance, capacitance, and embolism resistance

For most angiosperms, producing and maintaining flowers is critical to sexual repro- duction, yet little is known about the physiological processes involved in maintaining flowers throughout anthesis. Among extant species, flowers of the genus …