RNA on the move: The plasmodesmata perspective.

Autor: Reagan BC; Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States., Ganusova EE; Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States., Fernandez JC; Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States., McCray TN; School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996, United States., Burch-Smith TM; Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States; School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996, United States. Electronic address: tburchsm@utk.edu.
Jazyk: angličtina
Zdroj: Plant science : an international journal of experimental plant biology [Plant Sci] 2018 Oct; Vol. 275, pp. 1-10. Date of Electronic Publication: 2018 Jul 06.
DOI: 10.1016/j.plantsci.2018.07.001
Abstrakt: It is now widely accepted that plant RNAs can have effects at sites far away from their sites of synthesis. Cellular mRNA transcripts, endogenous small RNAs and defense-related small RNAs all move from cell to cell via plasmodesmata (PD), and may even move long distances in the phloem. Despite their small size, PD have complicated substructures, and the area of the pore available for RNA trafficking can be remarkably small. The intent of this review is to bring into focus the role of PD in cell-to-cell and long distance communication in plants. We consider how cellular RNAs could move through the cell to the PD and thence through PD. The protein composition of PD and the possible roles of PD proteins in RNA trafficking are also discussed. Recent evidence for RNA metabolism in organelles acting as a factor in controlling PD flux is also presented, highlighting new aspects of plant intra- and intercellular communication. It is clear that while the phenomenon of RNA mobility is common and essential, many questions remain, and these have been highlighted throughout this review.
(Copyright © 2018 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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