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@INPROCEEDINGS{Heck:1053949,
      author       = {Heck, Anna and Schnepf, Andrea and Pagel, Holger},
      title        = {{M}athematical {M}odelling of the
                      {S}oil-{R}oot-{M}ycorrhiza {S}ystem},
      reportid     = {FZJ-2026-01626},
      year         = {2025},
      abstract     = {Arbuscular mycorrhizal fungi (AMF) are widespread symbiotic
                      partners of mostterrestrial plants and form close
                      associations with their roots. While their role inenhancing
                      nutrient uptake, particularly phosphorus, has been well
                      studied, their effectson soil structure and plant water
                      uptake have not been studied as broadly.We have developed a
                      model describing AMF colonization and the growth of
                      extraradicalmycelium in the soil, with a particular focus on
                      their impact on plant drought tolerance.Plants in symbiosis
                      with AMF have been observed to extend their root system to
                      largersoil volumes and under nutrient limiting conditions
                      AMF facilitate nutrient uptake. Weexplore how AMF change the
                      root surrounding soil and how this aides root
                      growth.Additionally, we observe how the modified soil
                      affects water uptake as it has beensuggested that AMF hyphae
                      do not contribute significantly to water uptake.The model is
                      an extension of CPlantBox, a structural-functional model for
                      water andcarbon processes at the whole-plant level. By
                      integrating AMF infection, in silicoinvestigation of the
                      interaction between plant fungi and soil under varying
                      environmentalconditions becomes possible.Model
                      parameterization is based on experimental data from project
                      partners. Thisincludes information on root architecture,
                      spatial distribution of root length density inthe soil, and
                      AMF infection rates and locations in tomato plants. The
                      plants were grownin sandy and loamy soils under both drought
                      and well-watered conditions. Two differentAMF species were
                      used to reflect variation in symbiotic efficiency and
                      fungaldevelopment.The model will be used to assess the
                      contribution of AMF to plant water uptake,especially under
                      drought conditions. The objective is to improve our
                      understanding ofhow AMF contribute to plant resilience in
                      changing soil and climate environments.},
      month         = {Jun},
      date          = {2025-06-15},
      organization  = {Rhizosphere 6, Edinburgh (UK), 15 Jun
                       2025 - 19 Jun 2025},
      cin          = {IBG-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217) / DFG project G:(GEPRIS)516052611 -
                      Mykorrhiza-induzierte Trockentoleranz von Pflanzen und deren
                      Abhängigkeit von der Bodentextur (516052611)},
      pid          = {G:(DE-HGF)POF4-2173 / G:(GEPRIS)516052611},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/1053949},
}