Complementation of bipartite begomovirus movement functions by topocuviruses and curtoviruses

Complementation of bipartite begomovirus movement functions by topocuviruses and curtoviruses The DNA A components of bipartite species of the genus Begomovirus (family Geminiviridae ) encode all viral functions required for replication and encapsidation but require gene products encoded on DNA B for cell-to-cell movement in plants. We demonstrate that geminiviruses of the genera Curtovirus and Topocuvirus are able to trans -complement efficient movement of DNA A for two bipartite begomoviruses in the absence of their corresponding DNA B. It previously has been shown that DNA A can, at low efficiency and without inducing symptoms, spread in the absence of DNA B. The spread of DNA A independent of DNA B, following Agrobacterium -mediated inoculation, is shown to require coat protein whereas trans -complemented spread of DNA A can occur independent of the coat protein encoded on DNA A. The significance of these findings to our understanding of the geminiviral infection cycle is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Complementation of bipartite begomovirus movement functions by topocuviruses and curtoviruses

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Publisher
Springer-Verlag
Copyright
Copyright © 2001 by Springer-Verlag/Wien
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050170067
Publisher site
See Article on Publisher Site

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