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Updated: Jun 21, 2026

Lateral Root Inducible System in Arabidopsis and Maize
09:23

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Lateral root emergence: a difficult birth.

Benjamin Péret1, Antoine Larrieu, Malcolm J Bennett

  • 1Plant Sciences Division, School of Biosciences, University of Nottingham, Loughborough, UK. benjamin.peret@nottingham.ac.uk

Journal of Experimental Botany
|July 29, 2009
PubMed
Summary
This summary is machine-generated.

Lateral root emergence requires breaking through parental root tissues. Recent studies in Arabidopsis thaliana reveal a complex auxin-regulated signaling network controlling cell wall remodeling for this process.

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Area of Science:

  • Plant Biology
  • Developmental Biology
  • Molecular Biology

Background:

  • Lateral root initiation occurs deep within the parent root, necessitating primordia to penetrate overlying tissues.
  • While cellular aspects of lateral root emergence are known, the underlying molecular mechanisms were previously unclear.
  • Early hypotheses suggested enzyme-mediated modification of overlying cell walls by primordium cells.

Purpose of the Study:

  • To review early cell biology observations of lateral root formation and emergence.
  • To describe recent findings in Arabidopsis thaliana that elucidate the molecular regulation of lateral root emergence.
  • To detail the complex transcellular signaling network involved in controlling cell wall remodeling.

Main Methods:

  • Review of historical scientific literature on lateral root development.
  • Analysis of recent experimental data from the model plant Arabidopsis thaliana.
  • Focus on molecular and cellular mechanisms of cell wall modification.

Main Results:

  • Identification of a complex transcellular signaling network regulating lateral root emergence.
  • Demonstration that auxin is a key regulator of this signaling network.
  • Elucidation of the role of cell wall remodeling in overlying tissues.

Conclusions:

  • Auxin-mediated signaling is crucial for coordinating cell wall modifications during lateral root emergence.
  • Recent advances in Arabidopsis thaliana have uncovered the molecular basis of this developmental process.
  • Understanding these mechanisms provides insight into plant root system architecture.