Grapevine yellow speckle viroid 2

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Grapevine yellow speckle viroid 2 (GYSVd-2)

This viroid is widespread and closely related to GYSVd-1. Both viroids often do not cause any symptoms, but yellow speckle symptoms might develop along the veins. If both viroids occur together in a plant, mottling and vein banding symptoms can appear.

secondary structure of Grapevine yellow speckle viroid 2, black nucleotides are of low reactivity, orange ones of intermediate and red ones of high reactivity, for more details see the original publication (click on image to enlarge it)
Author(s): Tamara Giguère and Jean-Pierre Perreault
Source: PLoS ONE (2017) 12, e0182536