Virus Genes (2015) 51, 283-289

Yazmín M. Landeo-Ríos, Jesús Navas-Castillo, Enrique Moriones and M. Carmen Cañizares (2015)
Genetic diversity and silencing suppression activity of the p22 protein of Tomato chlorosis virus isolates from tomato and sweet pepper
Virus Genes 51 (2), 283-289
Abstract: As for other bipartite criniviruses (genus Crinivirus, family Closteroviridae), the genome of Tomato chlorosis virus encodes an RNA silencing suppressor, the protein p22, in the 3'-proximal region of RNA1. This protein has been reported as having one of the longest lasting local suppressor activities when transiently expressed in Nicotiana benthamiana. Here, we examined the genetic diversity of the p22 gene in ToCV isolates from tomato and sweet pepper. The p22 gene sequences clearly grouped into two separated clades. However, functional analysis of both types of p22 proteins indicated no evident differences in suppressor activity. Our findings provide experimental evidence that the presence of a "strong" silencing suppressor is a conserved feature of ToCV isolates.
(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): Jesús Navas-Castillo

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tomato chlorosis virus	Green pepper/chilli (Capsicum)	Spain (continental)
	Tomato chlorosis virus	Tomato (Solanum lycopersicum)	Spain (continental)