Journal Article

FZJ-2022-01427

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Rice increases phosphorus uptake in strongly sorbing soils by intra‐root facilitation

Kuppe, C. W. (Corresponding author)FZJ* ; Kirk, G. J. D. ; Wissuwa, M. ; Postma, J. A.FZJ*

2022
Wiley-Blackwell Oxford [u.a.]

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/30819  doi:10.1111/pce.14285

Abstract: 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.

Note: 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).

---

Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 2171 - Biological and environmental resources for sustainable use (POF4-217) (POF4-217)

Appears in the scientific report 2022

---

Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---