A5018479045- Plant nutrient uptake and metabolism
- Irrigation Practices and Water Management
- Rice Cultivation and Yield Improvement
- Soil Carbon and Nitrogen Dynamics
- Soil Moisture and Remote Sensing
- Plant Molecular Biology Research
- Legume Nitrogen Fixing Symbiosis
- Greenhouse Technology and Climate Control
- Crop Yield and Soil Fertility
- Soil and Unsaturated Flow
- Genetic and phenotypic traits in livestock
- Agronomic Practices and Intercropping Systems
- Plant responses to water stress
- Distributed and Parallel Computing Systems
- Plant responses to elevated CO2
- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Biocrusts and Microbial Ecology
- Soil and Water Nutrient Dynamics
Forschungszentrum Jülich
2017-2024
RWTH Aachen University
2021-2023
New types of phenotyping tools generate large amounts data on many aspects plant physiology and morphology with high spatial temporal resolution. These new are potentially useful to improve understanding prediction complex traits, like yield, that characterized by strong environmental context dependencies, i.e., genotype environment interactions. For an evaluation the utility information, we will look at how this information can be incorporated in different classes genotype-to-phenotype...
Summary O pen S im R oot is an open‐source, functional–structural plant model and mathematical description of root growth function. We describe its functionality to broaden the benefits modeling science community. extended version SimRoot , established simulate system architecture, nutrient acquisition growth. has a plugin, modular infrastructure, coupling single crop stands soil water transport models. It estimates value traits for in environments species. The flexible design allows...
Root cortical senescence (RCS) in Triticeae reduces nutrient uptake, content, respiration, and radial hydraulic conductance of root tissue. We used the functional-structural model SimRoot to evaluate functional implications RCS barley (Hordeum vulgare) under suboptimal nitrate, phosphorus, potassium availability. The utility was evaluated using sensitivity analyses contrasting regimes. At flowering (80 d), increased simulated plant growth by up 52%, 73%, 41% nitrate-, phosphorus-,...
Abstract Background The rhizosphere is the influence-sphere of root. It a local ecosystem with complex functions that determine nutrient uptake, cycling resources, and plant health. Mathematical models can quantitatively explain help to understand complexity. To interpret model predictions relevance processes, we require understanding underlying concepts. Conceptualization processes bridges mathematical modeling experimental work thus key rhizosphere. Scope We review concepts assumptions...
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 trait-based selection for further improvement. We present a novel model, which correctly simulates the uptake by P-efficient genotype measured over 48 days of growth. model represents morphology at local rhizosphere scale, including hairs fine S-type...
Abstract Functional-structural root architecture models have evolved as tools for the design of improved agricultural management practices and selection optimal traits. In order to test their accuracy reliability, we present first benchmarking water uptake from soil using five well-established functional-structural models: DuMux, CPlantBox, R-SWMS, OpenSimRoot SRI. The benchmark scenarios include basic tests flow in roots well advanced coupled soil-root system. reference solutions different...
Plant growth and high yields are secured by intensive use of nitrogen (N) fertilizer, which, however, pollutes the environment, especially when N is in form nitrate. Ammonium oxidized to nitrate nitrifiers, but roots can release biological nitrification inhibitors (BNIs). Under what conditions does root-exudation BNIs facilitate uptake reduce pollution loss environment? We modeled spatial-temporal dynamics ammonium, nitrate, around a root simulated net rhizosphere over plant's life cycle....
To answer long-standing questions about how plants use and regulate water, an affordable, noninvasive way to determine local root water uptake (RWU) is required. Here, we present a sensor, the soil profiler (SWaP), which can content (θ) with precision of 6.10−5 cm3 ⋅ cm−3, accuracy 0.002 temporal resolution 24 min, one-dimensional spatial 1 cm. The sensor comprises two copper sheets, integrated into sleeve connected coil, form resonant circuit. A vector network analyzer, inductively coupled...
ABSTRACT Does root-exudation of biological nitrification inhibitors (BNIs) facilitate nitrogen (N) uptake and reduce pollution by N loss to the environment? We modeled spatial-temporal dynamics nitrifiers, ammonium, nitrate, BNIs around a root simulated net rhizosphere over plant’s life cycle. determined sensitivity variation in parameters, testing broad range soil-plant-microbial conditions. An increase BNI exudation reduces and, under most conditions, plant uptake. decrease case (1) low...
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 trait-based selection for further improvement. We present a novel model, which correctly simulates the uptake by P-efficient genotype measured over 48 days of growth. model represents morphology at local rhizosphere scale, including hairs fine S-type...
Schnepf et al., (2020) defined benchmark scenarios for root growth models, soil water flow and in the coupled soil-root system. All benchmarks corresponding reference solutions were published form of Jupyter Notebooks on GitHub repository https://github.com/RSAbenchmarks/collaborative-comparison. Several groups functional-structural model developers have joined this benchmarking activity provided results their individual implementations different scenarios. The focus contribution is uptake...
<p>3D models of root growth, architecture and function are becoming important tools to aid the design agricultural management schemes selection beneficial traits. While benchmarking is common for water solute transport in soil, 3D root-soil interaction have not yet been systematically analysed. Several interacting processes might induce disagreement between models: sink term definitions uptake representation rhizosphere. Schnepf et al. (2020) proposed a framework quantitatively...