Columnea latent viroid

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Columnea latent viroid (CLVd)

This viroid has been originally described from symptomless Columnea erythrophaea plants in North America. It has been also reported from Europe and Africa as infecting tomatoes and other ornamentals. On tomatoes, the symptoms include leaf deformation, discolouration, necrosis and stunting. In tomatoes, a disease incidence of around 50% has been reported from a site in the U.K.

Most stable structure of Columnea latent viroid (CLVd). The nucleotides in black denote those of low SHAPE reactivities (0–0.40). Those in orange are of intermediate reactivities (0.40–0.85) and those in red are highly reactive (>0.85). The different regions are approximated by dashed lines, and the presence the A-motif is noted (click on image to enlarge it).
Author(s): Tamara Giguère, Charith Raj Adkar-Purushothama, Jean-Pierre Perreault
Source: PLoS ONE (2014) 9, e98655