Virus Genes (2007) 34, 367-371

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Dirk Janssen, Leonardo Velasco, Germán Martín, Eduardo Segundo and Isabel Maria Cuadrado (2007)
Low genetic diversity among Cucumber vein yellowing virus isolates from Spain
Virus Genes 34 (3), 367-371
Abstract: The population structure and genetic diversity of Cucumber vein yellowing virus (CVYV) from Spain were estimated by analyses of partial nucleotide sequences of the P1-proteinase (P1-Pro), P3 protein (P3), and the coat protein (CP) coding regions. Analysis of 56 CVYV Spanish field isolates collected from 2001 to 2005 showed low genetic diversity (0.0026, 0.0013, and 0.0012 for the P1-Pro, P3, and CP regions, respectively). The ratio between nonsynonymous and synonymous substitutions was among the lowest found in a plant virus, indicating a strong negative selective pressure in the regions analyzed. Nonsynonymous nucleotide substitutions were only found within the P1-Pro regions, although these do not appear to have been selected with time. The results support the hypothesis that the Spanish CVYV population could derive from a single origin of recent introduction.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Dirk Janssen, Eduardo Segundo, Leonardo Velasco (IFAPA)

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Cucumber vein yellowing virus Spain (continental)