TY  - JOUR
AU  - Kuppe, Christian W.
AU  - Kirk, Guy J. D.
AU  - Wissuwa, Matthias
AU  - Postma, Johannes A.
TI  - Rice increases phosphorus uptake in strongly sorbing soils by intra‐root facilitation
JO  - Plant, cell & environment
VL  - 45
IS  - 3
SN  - 0140-7791
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2022-01427
SP  -  884-899
PY  - 2022
N1  - FundingCK and JP were institutionally funded by the Helmholtz Association (POF IV: 2171, Biological and environmental resources for sustainable use). GK was supported by BBSRC (Grant Ref. BB/R020388/1) and OCP (Cranfield-Rothamsted-UM6P Collaboration Grant).
AB  - Upland rice (Oryza sativa) is adapted to strongly phosphorus (P) sorbing soils. The mechanisms underlying P acquisition, however, are not well understood, and models typically underestimate uptake. This complicates root ideotype development and trait-based selection for further improvement. We present a novel model, which correctly simulates the P uptake by a P-efficient rice genotype measured over 48 days of growth. The model represents root morphology at the local rhizosphere scale, including root hairs and fine S-type laterals. It simulates fast- and slowly reacting soil P and the P-solubilizing effect of root-induced pH changes in the soil. Simulations predict that the zone of pH changes and P solubilization around a root spreads further into the soil than the zone of P depletion. A root needs to place laterals outside its depletion- but inside its solubilization zone to maximize P uptake. S-type laterals, which are short but hairy, appear to be the key root structures to achieve that. Thus, thicker roots facilitate the P uptake by fine lateral roots. Uptake can be enhanced through longer root hairs and greater root length density but was less sensitive to total root length and root class proportions.
LB  - PUB:(DE-HGF)16
C6  - 35137976
UR  - <Go to ISI:>//WOS:000761260100022
DO  - DOI:10.1111/pce.14285
UR  - https://juser.fz-juelich.de/record/906413
ER  -