Document Detail

Identification of new Potato virus Y (PVY) molecular determinants for the induction of vein necrosis in tobacco.
MedLine Citation:
PMID:  22537230     Owner:  NLM     Status:  Publisher    
Two tobacco vein necrosis (TVN) determinants, the residues K(400) and E(419) , have been identified previously in the helper component-protease (HC-Pro) protein sequence of Potato virus Y (PVY). However, since their description, non-necrotic PVY isolates with both K(400) and E(419) necrotic determinants have been reported in the literature. This suggests the presence in the viral genome of other, as yet uncharacterized, TVN determinant(s). The identification of PVY(N) pathogenicity determinants was approached through the replacement of genomic regions of the necrotic PVY(N) -605 infectious clone by corresponding sequences from the non-necrotic PVY(O) -139 isolate. Series of PVY(N/O) chimeras and site-directed PVY mutants were constructed to test the involvement of different parts of the PVY genome (from nucleotide 421 to nucleotide 9629) in the induction of TVN symptoms. The analysis of both the genomic characteristics and biological properties of these mutants made it possible to highlight the involvement, in addition to residues K(400) and E(419) , of the residue N(339) of the HC-Pro protein and two regions in the cytoplasmic inclusion (CI) protein to nuclear inclusion protein a-protease (NIa-Pro) sequence (nucleotides 5496-5932 and 6233-6444) in the induction of vein necrosis in tobacco infected by PVY isolates.
Florence Faurez; Thomas Baldwin; Michel Tribodet; Emmanuel Jacquot
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-27
Journal Detail:
Title:  Molecular plant pathology     Volume:  -     ISSN:  1364-3703     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954969     Medline TA:  Mol Plant Pathol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
INRA-Agrocampus Ouest-Université Rennes1, UMR1099 BiO3P (Biology of Organisms and Populations Applied to Plant Protection), F-35653 Le Rheu, France FNPPPT (Fédération Nationale des Producteurs de Plants de Pomme de Terre), 43-45 rue de Naples, F-75008 Paris, France.
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