Abstract
In this paper we consider the high–affinity nitrate acquisition in plant roots. This process is governed by a mechanism including two loops of opposite signs we call Incoherent FeedBack (IFB) loop. A positive feedback loop acting in the short term, increases the intake when the roots are exposed to nitrate. An additional negative loop drastically reduces the acquisition in the long run by inhibiting the synthesis of transporters. We propose a model that fits nicely the experimental data. We investigate about the robustness of the model proving its structural stability, namely, stability for all possible parameters under some technical assumptions. We compare our model to the well known Incoherent FeedForward (IFF) loop which is a very popular network motif.
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Claims 5
Claim · model-written summary
High-affinity nitrate acquisition in plant roots is governed by two feedback loops of opposite signs, termed the Incoherent FeedBack loop.
Verbatim
t0“Nitrate Acquisition in Plant Roots”
e0“nitrate acquisition in plant roots”
e1“This process is governed by a mechanism including two loops of opposite signs we call Incoherent FeedBack (IFB) loop”
Claim · model-written summary
The positive feedback loop acting in the short term increases nitrate intake when roots are exposed to nitrate.
Verbatim
t0“Nitrate Acquisition in Plant Roots”
e2“A positive feedback loop acting in the short term, increases the intake when the roots are exposed to nitrate”
Claim · model-written summary
The negative feedback loop reduces nitrate acquisition in the long run by inhibiting transporter synthesis.
Verbatim
t0“Nitrate Acquisition in Plant Roots”
e3“An additional negative loop drastically reduces the acquisition in the long run by inhibiting the synthesis of transporters”
Claim · model-written summary
The proposed model fits the experimental data well.
Verbatim
e4“We propose a model that fits nicely the experimental data”
Claim · model-written summary
The model is structurally stable for all possible parameters under some technical assumptions.
Verbatim
e5“proving its structural stability, namely, stability for all possible parameters under some technical assumptions”