Related Experiment Video
Updated: Aug 7, 2026

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response
Published on: April 17, 2016
Creating phyllotaxis: the dislodgement model
1University of Technology/PTHN, Eindhoven, Holland.
Abstract:
Assuming that neither the Fibonacci sequence nor any numerical ratio or angular deflection is specified in the genetic material of a plant cell, there must be an arranging mechanism effecting the sequence mentioned. Considering the ubiquity of the Fibonacci numbers in nature, embracing many species of flora, we expect a very simple geometrical law to be responsible. Success in finding such a law does not constitute a proof, but it is at the least an indication that we should look here with mathematical rather than biological eyes. The idea may seem self-evident. However, in the literature it has not yet been honored as the basis for constructing the phyllotaxis in centric, planar models. It is shown here that for the construction of a phyllotactic structure, no special angles or distances need be defined; natural growth functions can be used; planar, cylindrical, conical, and paraboloid constructions are possible within the same model; and constructions leading to accessory sequences and multijugate sequences can also be carried out.
Related Concept Videos
Morphogenesis
Phloem and Sugar Transport
Determining the Plane of Cell Division
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division starting...
The Phragmoplast
The...
Mechanism of Filopodia Formation
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
The Phragmoplast
The...

