Document Detail

Movement proteins (BC1 and BV1) of Abutilon mosaic geminivirus are cotransported in and between cells of sink but not of source leaves as detected by green fluorescent protein tagging.
MedLine Citation:
PMID:  11883189     Owner:  NLM     Status:  MEDLINE    
Two movement proteins (BV1 and BC1) facilitate the intra- and intercellular transport of begomoviruses in plants. In contrast to other geminiviruses the movement protein BC1 of Abutilon mosaic virus (AbMV) remained in the supernatant after centrifuging plant extracts at 20,000 g. To test whether this unusual behavior results from a distinct intracellular distribution of the protein, the BC1 gene has been fused to the gene of green fluorescent protein (GFP). The resulting plasmids were delivered into nonhost plants (Allium cepa) as well as into mature and immature cells of host plants (Nicotiana tabacum, N. benthamiana) by biolistic bombardment for transient expression in planta. BC1 directed GFP to two different cellular sites. In the majority of nonhost cells as well as in mature cells of host leaves, BC1 was mainly localized in small punctate flecks at the cell periphery or, to a lesser extent, around the nucleus. In sink leaves of host plants, GFP:BC1 additionally developed disc-like structures in the cell periphery. Cobombardment of GFP:BC1 with its cognate infectious DNA A and B did not change their subcellular distribution patterns in source leaves but led to the formation of peculiar needle-like structures in sink leaves. The nuclear shuttle protein (BV1) of AbMV accumulated mainly inside the nuclei as shown by immunohistochemical staining and GFP tagging. In sink cells of host plants it was mobilized to the plasma membrane and to the nucleus of the neighboring cell by coexpressed BC1, GFP:BC1, BC1:GFP, or after cobombardment with the cognate viral DNA. Only under these conditions were GFP:BC1 and BC1:GFP also found in the recipient cell.
S C Zhang; C Wege; H Jeske
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Virology     Volume:  290     ISSN:  0042-6822     ISO Abbreviation:  Virology     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2002-03-08     Completed Date:  2002-03-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0110674     Medline TA:  Virology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  249-60     Citation Subset:  IM    
Department of Molecular Biology and Plant Virology, Biological Institute, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany.
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MeSH Terms
Artificial Gene Fusion
Biological Transport
Cell Fractionation
DNA, Viral
Geminiviridae / genetics,  metabolism*
Genes, Reporter
Green Fluorescent Proteins
Luminescent Proteins / genetics,  metabolism
Plant Leaves
Plant Viral Movement Proteins
Subcellular Fractions
Viral Proteins / genetics,  metabolism*
Reg. No./Substance:
0/DNA, Viral; 0/Luminescent Proteins; 0/Plant Viral Movement Proteins; 0/Viral Proteins; 147336-22-9/Green Fluorescent Proteins

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