Intercellular trafficking via plasmodesmata: molecular layers of complexity.

Intercellular trafficking via plasmodesmata: molecular layers of complexity.
Cell Mol Life Sci. 2020 Sep 12;:
Authors: Li ZP, Paterlini A, Glavier M, Bayer EM
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.
PMID: 32920696 [PubMed - as supplied by publisher]

Source: Cellular and Molecular Life Sciences : CMLS - September 11, 2020 Category: Cytology Authors: Li ZP, Paterlini A, Glavier M, Bayer EM Tags: Cell Mol Life Sci Source Type: research