Cell adhesion in plants is under the control of putative O-fucosyltransferases

Stéphane Verger (1, 2, 3) , Salem Chabout (2, 3) , Emilie Gineau (2, 3) , Grégory Mouille (2, 3)

1 RDP - Reproduction et développement des plantes
2 IJPB - Institut Jean-Pierre Bourgin
3 Université Paris-Saclay

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.

Mots clés: O-fucosyltransferases; Cell wall integrity; cell adhesion; cell wall

Mots clés: adhésion cellulaire; intégrité cellulaire; fucosyltransférase; paroi cellulaire; arabidopsis thaliana

Domaines: Sciences du Vivant [q-bio]

Stéphane Verger, Salem Chabout, Emilie Gineau, Grégory Mouille. Cell adhesion in plants is under the control of putative O-fucosyltransferases. Development (Cambridge, England), 2016, 143 (14), pp.2536-2540. ⟨10.1242/dev.132308⟩. ⟨hal-01602505⟩