Beyond the Barrier: Communication in the Root through the Endodermis

The root endodermis is characterized by the Casparian strip and by the suberin lamellae, two hydrophobic barriers that restrict the free diffusion of molecules between the inner cell layers of the root and the outer environment. The presence of these barriers and the position of the endodermis betwe...

Full description

Saved in:
Bibliographic Details
Published in:Plant physiology (Bethesda) 2014-10, Vol.166 (2), p.551-559
Main Authors: Robbins, Neil E., Trontin, Charlotte, Duan, Lina, Dinneny, José R.
Format: Article
Language:English
Subjects:
Auxins
Calcium
Calcium - metabolism
Cell membranes
Cell walls
Endodermis
Fungi - physiology
Molecules
Morphogenesis
Plant cells
Plant roots
Plant Roots - metabolism
Plant Roots - microbiology
Plant Roots - physiology
Plants
Signal Transduction
Solutes
Symbiosis
Update on Signaling and Response
UPDATES - FOCUS ISSUE
Water
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The root endodermis is characterized by the Casparian strip and by the suberin lamellae, two hydrophobic barriers that restrict the free diffusion of molecules between the inner cell layers of the root and the outer environment. The presence of these barriers and the position of the endodermis between the inner and outer parts of the root require that communication between these two domains acts through the endodermis. Recent work on hormone signaling, propagation of calcium waves, and plant-fungal symbiosis has provided evidence in support of the hypothesis that the endodermis acts as a signaling center. The endodermis is also a unique mechanical barrier to organogénesis, which must be overcome through chemical and mechanical cross talk between cell layers to allow for development of new lateral organs while maintaining its barrier functions. In this review, we discuss recent findings regarding these two important aspects of the endodermis.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.114.244871