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@ARTICLE{Agyei:1048822,
author = {Agyei, Kwabena and Detring, Justus and Metzner, Ralf and
Huber, Gregor and Pflugfelder, Daniel and Eini, Omid and
Varrelmann, Mark and Mahlein, Anne-Katrin and Koller,
Robert},
title = {{S}yndrome “basses richesses” disease induced
structural deformations and sectorial distribution of
photoassimilates in sugar beet taproot revealed by combined
{MRI}-{PET} imaging},
journal = {Plant phenomics},
volume = {7},
number = {2},
issn = {2097-0374},
address = {Washington, D.C.},
publisher = {American Association for the Advancement of Science},
reportid = {FZJ-2025-04930},
pages = {100053 -},
year = {2025},
abstract = {The disease syndrome “basses richesses” (SBR) leads to
a significant reduction in sugar beet biomass and
sugarcontent, negatively affecting the sugar economy. The
mechanistic understanding regarding growth and
photoassimilatesdistribution within the sugar beet taproot
diseased with SBR is currently incomplete. We combinedtwo
tomographic methods, magnetic resonance imaging (MRI) and
positron emission tomography (PET) using11C as tracer, to
non-invasively determine SBR effects on structural growth
and photoassimilates distributionwithin the developing
taproot over six weeks. MRI analysis revealed a deformed
cross-sectional anatomicalstructure from an early stage, as
well as a reduction in taproot volume and width of inner
cambium ringstructures of up to 26 and 24 $\%,$
respectively. These SBR disease effects were also confirmed
by post-harvestanalysis of the taproot. PET analysis
revealed a heterogeneous distribution of labeled
photoassimilates fordiseased plants: sectors of the taproot
with characteristic SBR symptoms showed little to very low
11C tracersignal. The heterogeneity of SBR disease effects
is most likely due to a partial inoculation of leaves
leading to anuneven distribution of the SBR pathogen in the
taproot through the strong vascular interconnection
betweenshoot and root. Also, the pathogen needs to spread
non-uniformly within the taproot to explain the
observedmarked increase of the SBR disease effects over
time. Our results indicate that SBR affects photoassimilates
sinkcapacity at an early stage of taproot development.
Co-registration of MRI and PET may support an early
judgingof susceptibility and selection of promising genotype
candidates for future breeding programs.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217) / DFG project G:(GEPRIS)390732324
- EXC 2070: PhenoRob - Robotik und Phänotypisierung für
Nachhaltige Nutzpflanzenproduktion (390732324)},
pid = {G:(DE-HGF)POF4-2171 / G:(GEPRIS)390732324},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.plaphe.2025.100053},
url = {https://juser.fz-juelich.de/record/1048822},
}