Download or read book Function of Membrane Microdomains in Plasmodesmata Mediated Intercellular Communication written by Magalie Grison and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmodesmata pores sustain intercellular communication in plants. They act as specialized signalling hubs clustering receptor activities, and are capable of generating and relaying signalling from cell-to-cell. As key elements in intercellular communication, plasmodesmata coordinate processes related to plant growth, development and environmental stresses responses. In this study, we identified three PM-located Leucine Rich Repeat Receptor Like Kinases (LRR-RLKs) that are able to dynamically and conditionally relocate to plasmodesmata upon abiotic stress. Plasmodesmal association occurs within 2 minutes and is not a general behaviour of PM or microdomain-associated proteins. Focusing on SAK1 (SUCROSE ACTIVATED KINASE) we demonstrated that the plasmodesmal dynamic association is neither dependent of sterol or sphingolipid composition and nor driven by the protein phosphorylation status. Importantly, we identified a polybasic amino acid motif in the Juxtamembrane Domain (JMD) of SAK1 predicted to bind anionic lipids that is critical for conditional plasmodesmal association. Altogether our data indicate that changes in the membrane molecular signature of plasmodesmata specialized domains accompanies responses to external stimuli.