Identification of the Trichome Patterning Core Network Using Data from Weak ttg1 Alleles to Constrain the Model Space
- Journal Article
The regular distribution of trichomes on leaves in Arabidopsis is a well-understood model system for two-dimensional pattern formation. It involves more than 10 genes and is governed by two patterning principles, the activator-inhibitor (AI) and the activator-depletion (AD) mechanisms, though their relative contributions are unknown. The complexity of gene interactions, protein interactions, and intra- and intercellular mobility of proteins makes it very challenging to understand which aspects are relevant for pattern formation. In this study, we use global mathematical methods combined with a constraining of data to identify the structure of the underlying network. To constrain the model, we perform a genetic, cell biological, and biochemical study of weak ttg1 alleles. We find that the core of trichome patterning is a combination of AI and AD mechanisms differentiating between two pathways activating the long-range inhibitor CPC and the short-range inhibitor TRY. Show more
Journal / seriesCell Reports
Pages / Article No.
SubjectMathematical modelling; Trichomes; Gene regulatory network; Arabidopsis thaliana; Patterning
Organisational unit03921 - Khammash, Mustafa / Khammash, Mustafa
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