Research Topic

Shoot branching at the meristem, plant, and population scales: which processes and which models to simulate plant plasticity?

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Plant plasticity is the ability of plants to adapt to changing environments. One lever of this plasticity is the shoot branching. Shoot branching results from axis initiation at the meristematic level, activation of these buds and expansion of the ramification. All these processes are driven by internal ...

Plant plasticity is the ability of plants to adapt to changing environments. One lever of this plasticity is the shoot branching. Shoot branching results from axis initiation at the meristematic level, activation of these buds and expansion of the ramification. All these processes are driven by internal factors such as hormones (auxin, cytokinin, strigolactone), sugar signals, and mechanical constraints. These factors may be modulated by environmental variables such as temperature, irradiance, light quality, nitrogen.

Plant growth and development result from the integration of these local processes at the cellular, organ, and population scales. The generated plant structure will modify organ local environment and hence signals received by plant cells. Likewise, plant-to-plant interactions modify the individual plant environment and alter plant morphogenesis among others at the level of shoot branching.

At present, there is a challenge in understanding and up scaling interactions between branching processes. Models allowing the integration from one scale to another are interesting to understand the regulation of alive systems as complex as the plants. A wide range of models is developed, each of them being adapted to a specific scale and/or questions, applications. Among them, models explaining the interactions between the structure and its functioning in relation with the environment are of particular interest to apprehend plant or organ plasticity.

The scope of this research topic is to gather and illustrate different integrative modelling approaches considering different scales and factors. We welcome you to participate in this Frontiers program with original research articles, method articles, reviews, mini-reviews or perspective articles.

Key words
- Physiology
- Ecophysioogy
- Modeling
- Structure-function
- Organ initiatiojn
- Meristematic development
- Ramification, branching
- Hormonal regulation of the ramification
- Signal control, photoregulation, trophic control
- Molecular biology
- Source/sink relationships


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