Nutrient exchange in arbuscular mycorrhizal symbiosis from a thermodynamic point of view

• DOI: 10.1111/nph.15646
• Publication Date: 2018-12-19T06:50:14Z
• Authors: Ingo Dreyer; Olivia Spitz; Kerstin Kanonenberg; Karolin Montag; Maria R. Handrich; Sabahuddin Ahmad; Stephan Schott‐Ve...; Carlos Navarro‐Re...; María E. Rubio‐Me...; Judith L. Gomez‐P...; Janin Riedelsberger; Marco A. Molina‐M...; Antonella Succurro; Alga Zuccaro; Sven B. Gould; Petra Bauer; Lutz Schmitt; Holger Gohlke
• Keywords: 0303 health sciences; 03 medical and health sciences; Nitrogen; Research; Mycorrhizae; Cell Membrane; info:eu-repo/classification/ddc/580; Thermodynamics; Biological Transport; Phosphorus; Symbiosis; Models, Biological

Summary To obtain insights into the dynamics of nutrient exchange in arbuscular mycorrhizal ( AM ) symbiosis, we modelled mathematically two‐membrane system at plant–fungus interface and simulated its dynamics. In computational cell biology experiments, full range transport pathways was tested for their ability to phosphorus (P)/carbon (C)/nitrogen (N) sources. As a result, obtained thermodynamically justified, independent comprehensive model contact zone. The predicted optimal transporter network coincides with set independently confirmed wet‐laboratory experiments previously, indicating that all essential types have been discovered. thermodynamic analyses suggest phosphate is released from fungus via proton‐coupled transporters rather than anion channels. Optimal pathways, such as cation channels or symporters, shuttle nutrients together positive charge across membranes. Only exceptional cases does electroneutral diffusion facilitators appear be plausible. models presented here can generalized adapted other forms mycorrhiza open door future studies combining simulations deeper understanding investigated phenomena.