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@ARTICLE{Cabrita:150211,
author = {Cabrita, Paulo and Thorpe, Michael and Huber, Gregor},
title = {{H}ydrodynamics of steady state phloem transport with
radial leakage of solute},
journal = {Frontiers in plant science},
volume = {4},
number = {531},
issn = {1664-462X},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2014-00287},
pages = {1-16},
year = {2013},
note = {erscheint nur online, Herr Cabrita war IBG-2 Mitarbeiter},
abstract = {Long-distance phloem transport occurs under a pressure
gradient generated by the osmotic exchange of water
associated with solute exchange in source and sink regions.
But these exchanges also occur along the pathway, and yet
their physiological role has almost been ignored in
mathematical models of phloem transport. Here we present a
steady state model for transport phloem which allows solute
leakage, based on the Navier-Stokes and convection-diffusion
equations which describe fluid motion rigorously. Sieve tube
membrane permeability Ps for passive solute exchange (and
correspondingly, membrane reflection coefficient) influenced
model results strongly, and had to lie in the bottom range
of the values reported for plant cells for the results to be
realistic. This smaller permeability reflects the efficient
specialization of sieve tube elements, minimizing any
diffusive solute loss favored by the large concentration
difference across the sieve tube membrane. We also found
there can be a specific reflection coefficient for which
pressure profiles and sap velocities can both be similar to
those predicted by the Hagen-Poiseuille equation for a
completely impermeable tube.},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {242 - Sustainable Bioproduction (POF2-242)},
pid = {G:(DE-HGF)POF2-242},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000331533400002},
pubmed = {pmid:24409189},
doi = {10.3389/fpls.2013.00531},
url = {https://juser.fz-juelich.de/record/150211},
}