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@ARTICLE{Perelman:886096,
author = {Perelman, Adi and Lazarovitch, Naftali and Vanderborght,
Jan and Pohlmeier, Andreas},
title = {{Q}uantitative imaging of sodium concentrations in
soil-root systems using magnetic resonance imaging ({MRI})},
journal = {Plant and soil},
volume = {454},
number = {1-2},
issn = {1573-5036},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2020-04264},
pages = {171 - 185},
year = {2020},
abstract = {AimsDemonstrating the potential of MRI as a 3D,
non-invasive and continuous measurement technique to map Na+
concentration distributions in soil and around
roots.MethodsDissolved NaCl in soil and soil-plant systems
was mapped by 3D 23Na-MRI. The lower limit of detectability
in saturated and unsaturated porous media was evaluated,
followed by evaporation experiments to test the
quantification. Finally, Na+ enrichment around tomato roots,
irrigated with saline solution under low/high transpiration
rates (LT, HT), was imaged in parallel to the root
system,.ResultsA spin echo pulse sequence allowed the
quantitative mapping of the volume concentration of NaCl in
sandy porous medium. Evaporation experiments showed slight
enrichment in the top surface layer, plus uniform temporal
enrichment in the deeper layers. In the tomato experiments,
enrichment was more distinct under HT than under LT.
Concentration-distance correlation curves revealed thin
enrichment zones ranging a few mm around the
roots.ConclusionsMRI can map Na+ non-invasively in 3D at
relevant concentrations for root activity. Visualizing water
content, roots and Na+ on the same scale is possible,
despite limitations of different scanning times and
resolution. This opens a route for further quantitative
investigations of salt enrichment processes in soil and
soil-plant systems.},
cin = {IBG-3},
ddc = {580},
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:000552183400001},
doi = {10.1007/s11104-020-04628-8},
url = {https://juser.fz-juelich.de/record/886096},
}