In botany, phyllotaxis (from Ancient Greek φύλλον (phúllon) 'leaf' and τάξις (táxis) 'arrangement') [1] or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature .

Feb 7, 2021 · Phyllotaxis (phyllotaxy) is the arrangement of repeated plant organs. The word “phyllotaxis” itself was coined by Carl Friedrich Schimper (), a botanist and naturalist from Mannheim, Germany.It is a combination of two Greek words: phullon (leaf) and taxis (arrangement). In a narrow sense, it is the arrangement of vegetative leaves on a stem (Fig. 1a).

Phyllotaxis. Cris Kuhlemeier, in Trends in Plant Science, 2007. Phyllotaxis, the regular arrangement of leaves or flowers around a plant stem, is an example of developmental pattern formation and organogenesis.Phyllotaxis is characterized by the divergence angles between the organs, the most common angle being 137.5°, the golden angle.

Sep 11, 2017 · Phyllotaxis is an inherently quantitative problem. But how can a small molecule in concert with its transporter induce organ formation at angles of 137°? Early computational models posited an inhibitor that is produced by pre-existing primordia and diffuses into the meristem. When the inhibitor decays with time and distance, patterns are produced.

What is Phyllotaxis? Many plants show regularly arranged rows of leaves, seeds, florets etc. The eye wants to join the neighboring elements into repeating curves – spirals around the center, or helices around the stem. These spirals, known as “parastichies”, usually come in two families, winding in opposite directions. These spirals may One central phenomenon … Continue …

This phenomenon, known as phyllotaxis, has long fascinated scientists from different disciplines. While we have an enriched body of knowledge on phyllotactic patterns, parameters, and transitions, only in the past 20 years, however, have we started to identify genes and elucidate genetic pathways that involved in phyllotaxis. In this review, I ...

Phyllotaxis The regular arrangement of lateral organs (leaves on a stem, scales on a cone axis, florets in a composite flower head) is an important aspect of plant form, known as phyllotaxis. The extensive literature generated by biologists’ and mathematicians’ interest in phyllotaxis is reviewed by Erickson [36] and Jean [78].

Other articles where phyllotaxis is discussed: number game: Fibonacci numbers: …the botanical phenomenon known as phyllotaxis. Thus, the arrangement of the whorls on a pinecone or pineapple, of petals on a sunflower, and of branches from some stems follows a sequence of Fibonacci numbers or the series of fractions

Phyllotaxis, the regular arrangement of leaves or flowers around a plant stem, is an example of developmental pattern formation and organogenesis. Phyllotaxis is characterized by the divergence angles between the organs, the most common angle being 137.5°, the golden angle. The quantitative aspects of phyllotaxis have stimulated research at the interface between …

Classification There are four main types of phyllotaxis, as shown below. They can be detected and further classified by the number of visible spirals (parastichies) they display. All of these patterns can be modeled by simple lattice-like mathematical structures. Other patterns may exist that are not as regular and therefore seldom mentioned by botanists. Spiral … Continue reading ...