Formation and separation of root border cells.
Plant roots release a large number of border cells into the rhizosphere, which are believed to play a key role in root development and health. The formation and loss of these cells from the root cap region is a developmentally regulated process that is also controlled by phytohormones and environmental factors. The separation of border cells involves the complete dissociation of individual cells from each other and from root tissue. This process requires the activity of cell wall-degrading enzymes that solubilize the cell wall connections between cells. We present and discuss the solubilization process with an emphasis on pectin-degrading enzymes as well as the recently discovered root border-like cells of Arabidopsis thaliana.
Driouich
Azeddine
A
UMR CNRS 6037, IFRMP 23, Plate-forme de Recherche en Imagerie Cellulaire de Haute-Normandie, Université de Rouen, F-76821 Mont-Saint-Aignan, Cedex, France. azeddine.driouich@univ-rouen.fr
Durand
Caroline
C
Vicré-Gibouin
Maïté
M
D017360:Arabidopsis / Q000166:cytology / Q000235:genetics; D002448:Cell Adhesion; D002468:Cell Physiological Phenomena; D018506:Gene Expression Regulation, Plant; D009154:Mutation / Q000235:genetics; D018517:Plant Roots / Q000166:cytology*