Journal
FRONTIERS IN PLANT SCIENCE
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2021.719453
Keywords
nuclear pore complex (NPC); nucleoporins (NUPs); nuclear transport receptors (NTRs); nucleocytoplasmic transport; plant development and immunity
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG) [WI 3208/8-1]
- DFG [IRTG 2172]
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Plant viability and responses to changing environments depend on spatial communication between the compartments separated by the nuclear envelope, involving bidirectional exchange of proteins and RNAs mediated by a sophisticated transport machinery.
The double membrane of the nuclear envelope (NE) constitutes a selective compartment barrier that separates nuclear from cytoplasmic processes. Plant viability and responses to a changing environment depend on the spatial communication between both compartments. This communication is based on the bidirectional exchange of proteins and RNAs and is regulated by a sophisticated transport machinery. Macromolecular traffic across the NE depends on nuclear transport receptors (NTRs) that mediate nuclear import (i.e. importins) or export (i.e. exportins), as well as on nuclear pore complexes (NPCs) that are composed of nucleoporin proteins (NUPs) and span the NE. In this review, we provide an overview of plant NPC- and NTR-directed cargo transport and we consider transport independent functions of NPCs and NE-associated proteins in regulating plant developmental processes and responses to environmental stresses.
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