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Related Experiment Video

Updated: May 15, 2026

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

The dicot root as a model system for studying organogenesis.

Julien Lavenus¹, Mikaël Lucas, Laurent Laplaze

¹Université Montpellier 2, UMR DIADE, IRD, Montpellier, France.

Methods in Molecular Biology (Clifton, N.J.)

|January 10, 2013

Summary

Plant organogenesis involves forming new organs from undifferentiated cells. Lateral root development offers a powerful model system to study plant organogenesis due to shared auxin dynamics with shoot development.

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Area of Science:

Plant developmental biology
Molecular genetics
Developmental signaling pathways

Background:

Organogenesis, the formation of organs from undifferentiated cells, is crucial for plant development.
In plants, organogenesis occurs during postembryonic development, with shoot lateral organs forming in the shoot apical meristem and lateral roots developing outside the root apical meristem.
Despite apparent differences, shoot and root lateral organ formation share underlying genetic mechanisms.

Purpose of the Study:

To highlight the parallels between shoot and root lateral organ formation in plants.
To propose lateral root development as an advantageous model system for studying plant organogenesis.
To emphasize the role of auxin in plant organogenesis.

Main Methods:

Review of recent genetic studies on plant organogenesis.
Comparative analysis of molecular mechanisms in shoot and root development.
Conceptual and technical evaluation of model systems for organogenesis research.

Main Results:

Dynamic auxin accumulation is a conserved mechanism acting as a morphogenetic trigger and morphogen in both shoot and root lateral organ formation.
Numerous genetic parallels exist between the development of shoot lateral organs and lateral roots.
Lateral root development presents significant conceptual and technical advantages as a model system.

Conclusions:

Lateral root development serves as an excellent model for studying plant organogenesis.
Understanding auxin's role in lateral root formation can provide insights into broader plant organ development.
Comparative studies reveal conserved pathways in plant organogenesis, facilitating model system selection.