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Curr Opin Plant Biol. 2003 Dec;6(6):596-602.

Symplasmic protein and RNA traffic: regulatory points and regulatory factors.

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  • 1Department of Plant Biology and Plant Biotechnology Center, 207 Rightmire Hall, The Ohio State University, 1060 Carmack Road, Columbus, Ohio 43210, USA.


Plasmodesmata and the phloem form a cytoplasmic network that permits direct cell-cell communication in plants. This network can mediate the trafficking of selective proteins and RNAs that may have important developmental functions. Recent work has provided evidence that protein and RNA traffic across specific interfaces of this network is regulated in a distinct manner. Progress has been made in identifying potential cellular factors that confer such regulation. These advances should promote further investigations into the mechanisms and functions of protein and RNA traffic using biochemical, cellular, genetic and molecular tools.

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