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Increase in Plasmodesmatal Permeability during Cell-to-Cell Spread of Tobacco Rattle Virus from Individually Inoculated Cells.

P. M. Derrick, H. Barker, K. J. Oparka
P. M. Derrick
Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, United Kingdom.
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H. Barker
Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, United Kingdom.
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K. J. Oparka
Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, United Kingdom.
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Published November 1992. DOI: https://doi.org/10.1105/tpc.4.11.1405

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Abstract

A microinjection technique was devised for inoculation of single Nicotiana clevelandii leaf trichome cells with virus particles. By removing inoculated trichomes at various times after microinjection, it was shown that at least 4 hr were required for tobacco rattle virus (TRV; tobravirus group) to move out of primarily inoculated cells. Effects of the early stages of TRV infection on plasmodesmatal permeability were examined by microinjection of fluorochrome-labeled molecules. Fluorescein-labeled insulin A chain (Mr, 2921) and fluorescein-labeled dextran (Mr, 4400) were observed to pass out of individual N. clevelandii trichome cells that had been inoculated with TRV by microinjection 5 hr previously. By contrast, Lucifer Yellow CH-labeled dextran (Mr, 10,000) was restricted to the inoculated cell. None of these fluorescent probes were able to move out of uninoculated cells or out of cells that had been inoculated with TRV only 2 hr previously. The movement of macromolecules through plasmodesmata, therefore, coincided with and probably resulted from cell-to-cell movement of TRV. The results are discussed with reference to the interaction of viruses and plasmodesmata and mechanisms of intercellular virus movement.

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Increase in Plasmodesmatal Permeability during Cell-to-Cell Spread of Tobacco Rattle Virus from Individually Inoculated Cells.
P. M. Derrick, H. Barker, K. J. Oparka
The Plant Cell Nov 1992, 4 (11) 1405-1412; DOI: 10.1105/tpc.4.11.1405

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Increase in Plasmodesmatal Permeability during Cell-to-Cell Spread of Tobacco Rattle Virus from Individually Inoculated Cells.
P. M. Derrick, H. Barker, K. J. Oparka
The Plant Cell Nov 1992, 4 (11) 1405-1412; DOI: 10.1105/tpc.4.11.1405
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