title: Cellulose-binding domains: cellulose associated-defensive sensing partners?
abstract: The cellulose-binding domains (CBDs) in the Phytophthora cellulose-binding elicitor lectin (CBEL) are potent elicitors of plant defence responses. Induction of defence has also been reported in various cellulose-deficient mutants of Arabidopsis thaliana. Based on these observations, we propose a model linking cellulose alteration to defence induction. This integrates the fast increase in cytosolic calcium recorded in response to CBEL, mechano-stimulated calcium uptake mechanisms, and proteins that interact functionally with the cellulose synthase complex. In this context, CBDs emerge as new tools to decipher the signalling cascades that result from cell wall-cellulose perturbations.
authors.affiliation: Unité Mixte de Recherche 5546 Centre National de la Recherche Scientifique-Université Paul Sabatier Toulouse III, Pôle de Biotechnologie Végétale, 24 Chemin de Borde-Rouge, BP42617 Auzeville, 31326 Castanet-Tolosan, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Dumas
authors.forename: Arnaud
authors.initials: A
authors.lastname: Bottin
authors.forename: Elodie
authors.initials: E
authors.lastname: Gaulin
authors.forename: Marie-Thérèse
authors.initials: MT
authors.lastname: Esquerré-Tugayé
mesh_terms: D020418:Algal Proteins / Q000378:metabolism*; D001665:Binding Sites; D002473:Cell Wall / Q000378:metabolism / Q000382:microbiology; D002482:Cellulose / Q000378:metabolism*; D008954:Models, Biological; D010838:Phytophthora / Q000378:metabolism*; D010944:Plants / Q000378:metabolism / Q000382:microbiology; D011485:Protein Binding; D015398:Signal Transduction
chemical_list: D020418:Algal Proteins; D002482:Cellulose