Corpus ID: 5039578

The Water Circuit of the Plants - Do Plants have Hearts ?

@article{Kundt2006TheWC,
  title={The Water Circuit of the Plants - Do Plants have Hearts ?},
  author={Wolfgang Kundt and Eva Gruber},
  journal={arXiv: Subcellular Processes},
  year={2006}
}
There is a correspondence between the circulation of blood in all higher animals and the circulation of sap in all higher plants - up to heights h of 140 m - through the xylem and phloem vessels. Plants suck in water from the soil, osmotically through the roothair zone, and subsequently lift it osmotically again, and by capillary suction (via their buds, leaves, and fruits) into their crowns. In between happens a reverse osmosis - the endodermis jump - realized by two layers of subcellular… Expand

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1
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References

SHOWING 1-10 OF 59 REFERENCES
THE ASCENT OF WATER.
TLDR
The cohesion-tension theory, as it is known, supposes both adhesion of water to conduit walls and cohesion of water molecules to each other to lift water much like a rope under tension can lift a weight. Expand
Applications of the compensating pressure theory of water transport.
  • M. Canny
  • Biology, Medicine
  • American journal of botany
  • 1998
TLDR
Far from being a metastable system on the edge of disaster, the water transport system of the xylem is ultrastable: robust and self-sustaining in response to many kinds of stress. Expand
Water ascent in tall trees: does evolution of land plants rely on a highly metastable state?
TLDR
An enormous bulk of evidence is presented supporting the view that - depending on the species and ecophysiological context - many other forces, additional to low tensions, can be involved in water ascent and that water can be lifted by a series of watergates (like ships in staircase locks). Expand
Mechanisms of long-distance water transport in plants: a re-examination of some paradigms in the light of new evidence
According to the widely accepted Cohesion Theory, water is pulled by transpiration from the roots through the xylem to the leaves. It is believed that this process results in the development of largeExpand
On the nature of root pressure
According to the osmotic conception, the moving force of exudation is determined merely by the difference of the osmotic pressure between the xylem sap and ambient solution; so exudation isExpand
The Study of the Hydraulic Conductivity of the Plasmodesmal Transport Channels by the Pulse NMR Method
Radial self-diffusion of water in the absorbing zone of the roots of winter wheat (Triticum aestivumL.) seedlings was studied by the pulse-gradient-spin-echo NMR method. At the fixed time ofExpand
Ecology and ecophysiology of tree stems: corticular and wood photosynthesis
TLDR
It is suggested that the oxygen evolved during wood or pith photosynthesis may play a decisive role in avoiding/reducing stem internal anaerobiosis. Expand
A new concept of root exudation
After discussing numerous models for exudation from the xylem of roots, we present a new biphasic exudation model based on osmoregulation of the root symplast by stretch-activated ion channels (SAExpand
Radial Turgor and Osmotic Pressure Profiles in Intact and Excised Roots of Aster tripolium: Pressure Probe Measurements and Nuclear Magnetic Resonance-Imaging Analysis.
TLDR
High-resolution nuclear magnetic resonance images of cross-sections of excised roots of the halophyte Aster tripolium showed radial cell strands separated by air-filled spaces that provided conclusions about the driving forces for water and solute transport in the roots and about the function of the air- fills in water transport. Expand
Plasmodesmata and the supracellular nature of plants.
TLDR
The hypothesis that plants function as supracellular, rather than multicellular, organisms is advanced, as the dynamics of the plant body, including cell differentiation, tissue formation, organogenesis and specialized physiological function(s), is subject to plasmodesmal regulation. Expand
...
1
2
3
4
5
...