## Grigolon2018 - Responses to auxin signals

Model Identifier
MODEL2003060002
Short description
Plants depend on the signalling of the phytohormone auxin for their development and for responding to environmental perturbations. The associated biomolecular signalling network involves a negative feedback on Aux/IAA proteins which mediate the influence of auxin (the signal) on the auxin response factor (ARF) transcription factors (the drivers of the response). To probe the role of this feedback, we consider alternative in silico signalling networks implementing different operating principles. By a comparative analysis, we find that the presence of a negative feedback allows the system to have a far larger sensitivity in its dynamical response to auxin and that this sensitivity does not prevent the system from being highly resilient. Given this insight, we build a new biomolecular signalling model for quantitatively describing such Aux/IAA and ARF responses.
Format
SBML (L2V4)
Related Publication
• Responses to auxin signals: an operating principle for dynamical sensitivity yet high resilience.
• Grigolon S, Bravi B, Martin OC
• Royal Society open science , 1/ 2018 , Volume 5 , Issue 1 , pages: 172098 , PubMed ID: 29410878
• LPTMS, Université Paris-Sud XI-Université Paris-Saclay, 15, Rue Georges Clémenceau, 91405 Orsay, France.
• Plants depend on the signalling of the phytohormone auxin for their development and for responding to environmental perturbations. The associated biomolecular signalling network involves a negative feedback on Aux/IAA proteins which mediate the influence of auxin (the signal) on the auxin response factor (ARF) transcription factors (the drivers of the response). To probe the role of this feedback, we consider alternative in silico signalling networks implementing different operating principles. By a comparative analysis, we find that the presence of a negative feedback allows the system to have a far larger sensitivity in its dynamical response to auxin and that this sensitivity does not prevent the system from being highly resilient. Given this insight, we build a new biomolecular signalling model for quantitatively describing such Aux/IAA and ARF responses.
Contributors
Submitter of the first revision: Ahmad Zyoud
Submitter of this revision: Tung Nguyen
Modellers:
Others: Tung Nguyen

hasProperty
Mathematical Modelling Ontology Ordinary differential equation model
26158
0011910
occursIn
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isDescribedBy

Curation status
Non-curated

Modelling approach(es)

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### Model files

Grigolon2018.xml SBML L2V4 file Grigolon2018-Responses to auxin signals_ Orignal_ Annotated 28.85 KB Preview | Download

Grigolon2018.cps COPASI version 4.27 (Build 217) Grigolon2018-Responses to auxin signals_ Annotated 56.93 KB Preview | Download
• Model originally submitted by : Ahmad Zyoud
• Submitted: Mar 6, 2020 11:05:39 AM