Research

A Functional-structural Model of 3D Root Hair Growth With Collision Detection Based on X-ray CT Data

Link to paper The rhizosphere is a zone of fundamental importance for understanding the dynamics of nutrient acquisition by plant roots. The canonical difficulty of experimentally investigating the rhizosphere led long ago to the adoption of mathematical models, the most sophisticated of which now incorporate explicit representations of root hairs and rhizosphere soil. Mathematical upscaling …

Synchrotron CT Imaging with Volume and Object Correlation of 4D Soil Displacements Around Plant Roots

Link to paper This study applied time lapse (four-dimensional) synchrotron X-ray computed tomography to observe micro-scale interactions between plant roots and soil. Functionally contrasting maize root tips were repeatedly imaged during ingress into soil columns of varying water content and compaction. This yielded sequences of three-dimensional densiometric data, representing time-resolved geometric soil and root configurations …

3D Tracking of Soil Deformation Around Plant Roots using X-ray CT and DVC

Link to paper The mechanical impedance of soils inhibits the growth of plant roots, often being the most significant physical limitation to root system development. Non-invasive imaging techniques have recently been used to investigate the development of root system architecture over time, but the relationship with soil deformation is usually neglected. Correlative mapping approaches parameterised using 2D and 3D …

Use of Contrast Media for X-ray CT of Plant Roots

Link to paper The use of in vivo X-ray microcomputed tomography (╬╝CT) to study plant root systems has become routine, but is often hampered by poor contrast between roots, soil, soil water, and soil organic matter. In clinical radiology, imaging of poorly contrasting regions is frequently aided by the use of radio-opaque contrast media. In this study, …