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Int. J. Mol. Sci. 2017, 18(12), 2733; doi:10.3390/ijms18122733

Molecular Biology of Prune Dwarf Virus—A Lesser Known Member of the Bromoviridae but a Vital Component in the Dynamic Virus–Host Cell Interaction Network

1
Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences—SGGW, Nowoursynowska Street 159, 02-776 Warsaw, Poland
2
Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115, USA
3
Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland
*
Authors to whom correspondence should be addressed.
Received: 17 October 2017 / Revised: 21 November 2017 / Accepted: 13 December 2017 / Published: 16 December 2017
(This article belongs to the Special Issue Plant Innate Immunity 2.0)
View Full-Text   |   Download PDF [10960 KB, uploaded 16 December 2017]   |  

Abstract

Prune dwarf virus (PDV) is one of the members of Bromoviridae family, genus Ilarvirus. Host components that participate in the regulation of viral replication or cell-to-cell movement via plasmodesmata are still unknown. In contrast, viral infections caused by some other Bromoviridae members are well characterized. Bromoviridae can be distinguished based on localization of their replication process in infected cells, cell-to-cell movement mechanisms, and plant-specific response reactions. Depending upon the genus, “genome activation” and viral replication are linked to various membranous structures ranging from endoplasmic reticulum, to tonoplast. In the case of PDV, there is still no evidence of natural resistance sources in the host plants susceptible to virus infection. Apparently, PDV has a great ability to overcome the natural defense responses in a wide spectrum of plant hosts. The first manifestations of PDV infection are specific cell membrane alterations, and the formation of replicase complexes that support PDV RNA replication inside the spherules. During each stage of its life cycle, the virus uses cell components to replicate and to spread in whole plants, within the largely suppressed cellular immunity environment. This work presents the above stages of the PDV life cycle in the context of current knowledge about other Bromoviridae members. View Full-Text
Keywords: Bromoviridae; plant–virus interactions; plant defense response; Prune dwarf virus; replication process; systemic and local movement Bromoviridae; plant–virus interactions; plant defense response; Prune dwarf virus; replication process; systemic and local movement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kozieł, E.; Bujarski, J.J.; Otulak, K. Molecular Biology of Prune Dwarf Virus—A Lesser Known Member of the Bromoviridae but a Vital Component in the Dynamic Virus–Host Cell Interaction Network. Int. J. Mol. Sci. 2017, 18, 2733.

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