Intercellular trafficking via plasmodesmata: molecular layers of complexity
Language
EN
Article de revue
This item was published in
Cellular and Molecular Life Sciences. 2021, vol. 78, n° 3, p. 799-816
English Abstract
Abstract Plasmodesmata are intercellular pores connecting together most plant cells. These structures consist of a central constricted form of the endoplasmic reticulum, encircled by some cytoplasmic space, in turn delimited ...Read more >
Abstract Plasmodesmata are intercellular pores connecting together most plant cells. These structures consist of a central constricted form of the endoplasmic reticulum, encircled by some cytoplasmic space, in turn delimited by the plasma membrane, itself ultimately surrounded by the cell wall. The presence and structure of plasmodesmata create multiple routes for intercellular trafficking of a large spectrum of molecules (encompassing RNAs, proteins, hormones and metabolites) and also enable local signalling events. Movement across plasmodesmata is finely controlled in order to balance processes requiring communication with those necessitating symplastic isolation. Here, we describe the identities and roles of the molecular components (specific sets of lipids, proteins and wall polysaccharides) that shape and define plasmodesmata structural and functional domains. We highlight the extensive and dynamic interactions that exist between the plasma/endoplasmic reticulum membranes, cytoplasm and cell wall domains, binding them together to effectively define plasmodesmata shapes and purposes.Read less <
English Keywords
Cell wall
Cell–cell communication
ER–PM contacts
Nanodomains
Plants
Plasmodesmata
European Project
European Union’s Horizon 2020 research and innovation programme under grant agreement
ANR Project
CONTACTS MEMBRANAIRES ET LE CONTROLE DE LA COMMUNICATION INTERCELLULAIRE CHEZ LES PLANTES - ANR-18-CE13-0016