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@ARTICLE{HaberPohlmeier:840435,
author = {Haber-Pohlmeier, Sabine and Vanderborght, J. and Pohlmeier,
Andreas},
title = {{Q}uantitative mapping of solute accumulation in a
soil-root system by magnetic resonance imaging},
journal = {Water resources research},
volume = {53},
number = {8},
issn = {0043-1397},
address = {[New York]},
publisher = {Wiley},
reportid = {FZJ-2017-07952},
pages = {7469 - 7480},
year = {2017},
abstract = {Differential uptake of water and solutes by plant roots
generates heterogeneous concentration distributions in
soils. Noninvasive observations of root system architecture
and concentration patterns therefore provide information
about root water and solute uptake. We present the
application of magnetic resonance imaging (MRI) to image and
monitor root architecture and the distribution of a tracer,
GdDTPA2− (Gadolinium-diethylenetriaminepentacetate)
noninvasively during an infiltration experiment in a soil
column planted with white lupin. We show that inversion
recovery preparation within the MRI imaging sequence can
quantitatively map concentrations of a tracer in a complex
root-soil system. Instead of a simple T1 weighting, the
procedure is extended by a wide range of inversion times to
precisely map T1 and subsequently to cover a much broader
concentration range of the solute. The derived
concentrations patterns were consistent with mass balances
and showed that the GdDTPA2− tracer represents a solute
that is excluded by roots. Monitoring and imaging the
accumulation of the tracer in the root zone therefore offers
the potential to determine where and by which roots water is
taken up.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000411202000059},
doi = {10.1002/2017WR020832},
url = {https://juser.fz-juelich.de/record/840435},
}