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@ARTICLE{Punyasu:1027233,
author = {Punyasu, Nattharat and Thaiprasit, Jittrawan and
Kalapanulak, Saowalak and Saithong, Treenut and Postma,
Johannes A.},
title = {{M}odeling cassava root system architecture and the
underlying dynamics in shoot–root carbon allocation during
the early storage root bulking stage},
journal = {Plant and soil},
volume = {507},
issn = {0032-079X},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2024-03687},
pages = {863-880},
year = {2025},
abstract = {· Background and Aims: Plants store carbohydrates for
later use during, e.g., night, drought, and recovery after
stress. Carbon allocation presents the plant with tradeoffs,
notably between growth and storage. We asked how this
tradeoff works for cassava (Manihot esculenta)pre- and
post-storage root (SR) formation and if manipulation of the
number of storage organs and leaf growth rate might increase
yield. · Methods: We developed a functional-structural
plant model, called MeOSR, to simulate carbon partitioning
underlying cassava growth and SR formation in conjunction
with the root system's three-dimensional (3D) architecture
(RSA). We validated the model against experimental data and
simulated phenotypes varying in the number of SR and leaf
growth rate. · Results: The simulated 3D RSA and the root
mass closely represented those of field-grown plants. The
model simulated root growth and associated carbon allocation
across development stages. Substantial accumulation of
non-structural carbohydrates (NSC) preceded SR formation,
suggesting sink-limited growth. SR mass and canopy
photosynthesis might be increased by both increasing the
number of SR and the leaf growth rate. · Conclusion: MeOSR
offers a valuable tool for simulating plant growth, its
associated carbon economy, and 3D RSA over time. In the
first month, the specific root length increased due to root
branching, but in the third month, it decreased due to
secondary root growth. The accumulation of NSC might
initiate SR development in cassava. Cassava growth is
relatively slow during the first 3 months, and a faster crop
establishment combined with a greater SR growth might
increase yield.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217) / Verbundprojekt: moDel-basierte
Entscheidungshilfe für Bewässerung in der
Maniok-Produktion, Teilvorhaben: Phänotypisierung, Workshop
Modellentwicklung (01DP21004)},
pid = {G:(DE-HGF)POF4-2171 / G:(BMBF)01DP21004},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001244855500002},
doi = {10.1007/s11104-024-06771-y},
url = {https://juser.fz-juelich.de/record/1027233},
}