Cell adhesion in plants is under the control of putative O-fucosyltransferases.
Cell-to-cell adhesion in plants is mediated by the cell wall and the presence of a pectin-rich middle lamella. However, we know very little about how the plant actually controls and maintains cell adhesion during growth and development and how it deals with the dynamic cell wall remodeling that takes place. Here we investigate the molecular mechanisms that control cell adhesion in plants. We carried out a genetic suppressor screen and a genetic analysis of cell adhesion-defective Arabidopsis thaliana mutants. We identified a genetic suppressor of a cell adhesion defect affecting a putative O-fucosyltransferase. Furthermore, we show that the state of cell adhesion is not directly linked with pectin content in the cell wall but instead is associated with altered pectin-related signaling. Our results suggest that cell adhesion is under the control of a feedback signal from the state of the pectin in the cell wall. Such a mechanism could be necessary for the control and maintenance of cell adhesion during growth and development.
Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026 Versailles Cedex, France Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France.
Stéphane
S
Verger
Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026 Versailles Cedex, France.
Salem
S
Chabout
Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026 Versailles Cedex, France.
Emilie
E
Gineau
Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026 Versailles Cedex, France gregory.mouille@versailles.inra.fr.
Grégory
0000-0002-5493-754X
G
Mouille
D017360:Arabidopsis / Q000166:cytology* / Q000201:enzymology* / Q000235:genetics; D029681:Arabidopsis Proteins / Q000378:metabolism*; D002448:Cell Adhesion; D002473:Cell Wall / Q000378:metabolism; D005647:Fucosyltransferases / Q000378:metabolism*; D017343:Genes, Plant; D005820:Genetic Testing; D006056:Golgi Apparatus / Q000378:metabolism; D008954:Models, Biological; D009154:Mutation / Q000235:genetics; D010368:Pectins / Q000378:metabolism; D015398:Signal Transduction; D013379:Substrate Specificity; D013489:Suppression, Genetic
D029681:Arabidopsis Proteins; D010368:Pectins; D005647:Fucosyltransferases; C003181:polygalacturonic acid
Arabidopsis thaliana; Cell adhesion; Cell wall integrity; O-fucosyltransferases