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Updated: Jun 10, 2026

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

A plausible mechanism for auxin patterning along the developing root.

Victoria V Mironova¹, Nadezda A Omelyanchuk, Guy Yosiphon

¹Institute of Cytology and Genetics, SB RAS, Lavrentyeva 10, Novosibirsk, Russia.

BMC Systems Biology

|July 29, 2010

Summary

This summary is machine-generated.

A new reflected flow mechanism explains how auxin distribution creates root patterns. This model accounts for auxin maxima crucial for root development and lateral root initiation in plants.

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Published on: May 14, 2020

Area of Science:

Plant biology
Developmental biology
Biophysics

Background:

Auxin is essential for plant root development, controlling cell division, elongation, and meristem maintenance.
Auxin distribution in Arabidopsis roots features maxima at the root tip, basal meristem, and shoot/root junction, influencing stem cell niches and lateral root initiation.

Purpose of the Study:

To propose and validate a novel mechanism for auxin patterning in plant roots.
To explain the self-organization of auxin distribution and its role in root morphogenesis.

Main Methods:

Development of a mathematical model simulating auxin transport and its regulation of PIN auxin carriers.
Incorporation of cell division rules governed by auxin and a Division Factor (combining cytokinin and ethylene effects).

Main Results:

The reflected flow mechanism successfully models auxin maxima formation in the root apical meristem.
Simulations demonstrate self-organization of auxin patterns under various conditions.
The model explains root patterning along the central axis using positional information from auxin and Division Factor gradients.

Conclusions:

The reflected flow mechanism provides a plausible explanation for auxin patterning and distal maximum self-organization in developing roots.
Proximal maxima formation is linked to auxin flow from the shoot, potentially predetermining lateral root initiation patterns.
Differential inhibition of auxin transport may explain species-specific root architectures (taproot vs. fibrous).