Interactions between plants and their environment shape terrestrial fluxes, biochemical cycles, and agro-ecosystem productivity. However, we still lack detailed knowledge of how these interactions impact plant access to soil resources and, hence, plant growth, particularly under deficit conditions. The main challenge arises from the complexity inherent to biophysical and biochemical processes in soil and plants across multiple scales. To address these knowledge gaps, an improved understanding of soil-plant-related transfer processes is needed.

Quantitative approaches that integrate across disciplines and scales constitute stepping-stones to foster our understanding of fundamental biophysical processes at the interface between soil and plants. This session targets research investigating soil-plant-related resource transfer processes across different scales (from the rhizosphere to the global scale) and welcomes scientists from multiple disciplines encompassing soil and plant sciences across natural as well as agricultural systems. We are specifically inviting contributions on the following topics:

- Hot topics 2027: Heat and drought interactions, hybrid process-based and data-driven models
- Bridging the gap between biologically and physically oriented research in soil and plant sciences
- Measuring and modeling of soil-plant hydraulics and gas exchange, water, solute, and carbon fluxes through the soil-plant-atmosphere continuum across scales
- Identification of plant strategies to better access and use resources from the soil, including under abiotic stress(es)
- Experimental techniques such as non-invasive imaging and three-dimensional root system modeling tools
- Novel experimental and modeling techniques assessing belowground processes such as root growth, root water, and nutrient uptake, root exudation, microbial interactions, and soil aggregation
- Mechanistic understanding of plant water use and gas exchange regulation under drought and their implementation across scales (from cell to organ to single plant to agro- ecosystems, Earth system)