Modelling the emergence of polarity patterns for the intercellular transport of auxin in plants.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25977961.
- Also identified by DOI 10.1098/rsif.2014.1223 and PMC identifier 4424666.
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Abstract
The hormone auxin is actively transported throughout plants via protein machineries including the dedicated transporter known as PIN. The associated transport is ordered with nearby cells driving auxin flux in similar directions. Here, we provide a model of both the auxin transport and of the dynamics of cellular polarization based on flux sensing. Our main findings are: (i) spontaneous intracellular PIN polarization arises if PIN recycling dynamics are sufficiently nonlinear, (ii) there is no need for an auxin concentration gradient and (iii) ordered multi-cellular patterns of PIN polarization are favoured by molecular noise.
Medical subject headings
- Arabidopsis
- Arabidopsis Proteins
- Cell Communication
- Indoleacetic Acids
- Membrane Transport Proteins
- Models, Biological