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Trends Plant Sci. 2019 Sep;24(9):826-839. doi: 10.1016/j.tplants.2019.06.015. Epub 2019 Jul 27.

Lateral Root Formation in Arabidopsis: A Well-Ordered LRexit.

Author information

1
Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, UK.
2
Unité Mixte de Recherche (UMR) Diversité, Adaptation, et Developpement des Plantes (DIADE), Institut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France.
3
Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan.
4
Unité Mixte de Recherche (UMR) Diversité, Adaptation, et Developpement des Plantes (DIADE), Institut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France. Electronic address: laurent.laplaze@ird.fr.
5
Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, UK. Electronic address: mMalcolm.bennett@nottingham.ac.uk.

Abstract

Lateral roots (LRs) are crucial for increasing the surface area of root systems to explore heterogeneous soil environments. Major advances have recently been made in the model plant arabidopsis (Arabidopsis thaliana) to elucidate the cellular basis of LR development and the underlying gene regulatory networks (GRNs) that control the morphogenesis of the new root organ. This has provided a foundation for understanding the sophisticated adaptive mechanisms that regulate how plants pattern their root branching to match the spatial availability of resources such as water and nutrients in their external environment. We review new insights into the molecular, cellular, and environmental regulation of LR development in arabidopsis.

KEYWORDS:

auxin; biomechanics; cell fate; environmental patterning; live microscopy

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