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Updated: Jul 18, 2026

Design and Operation of a Continuous 13C and 15N Labeling Chamber for Uniform or Differential, Metabolic and Structural, Plant Isotope Labeling
Published on: January 16, 2014
Storage and recall of environmental signals in a plant: modelling by use of a differential (continuous) formulation
Jacques Demongeot1, Michel Thellier, René Thomas
1TIMC-IMAG UMR CNRS 5525, Faculté de Médecine, Université Joseph-Fourier, Grenoble, 38700 La Tronche, France. Jacques.Demongeot@imag.fr
Abstract:
The breaking of the symmetry of bud growth in Bidens seedlings involves a sort of plant 'memory'. An asymmetrical stimulus (e.g., the pricking of one of the seedling cotyledons) stores a 'symmetry-breaking' signal within the plants (function STO). Depending on other stimuli received by the seedlings, the stored signal may remain silent or be recalled (RCL function) and take effect in the seedling morphogenesis (asymmetry of the growth of the cotyledonary buds, with a statistical advantage to the bud at the axil of the non-stimulated cotyledon). We show that this memory mechanism can be interpreted by a model taking into account a genetic control exerted on a non-linear enzymatic system that is able to choose trajectories going to different attractors, depending on the stimulation intensity.
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