Chrysanthemum chlorotic mottle viroid

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Secondary structure of Chrysanthemum chlorotic mottle viroid, plus and minus self-cleavage domains are delimited by flags, residues conserved in most natural hammerhead structures are boxed, and the self-cleavage sites are indicated by arrows. Light-blue shading and light-red shading in flags, boxes, and arrows refer to plus and minus polarities, respectively. The light-yellow square demarcates the domain that alternatively can form a kissing-loop interaction (click on image to enlarge it)
Author(s): Won Kyong Cho, Yeonhwa Jo, Kyoung-Min Jo and Kook-Hyung Kim
Source: Viruses (2013) 5, p.1102

Chrysanthemum chlorotic mottle viroid (CChMVd)

The viroid replicates in the host chloroplast and infects chrysanthemums in Asia. It has been also reported from Europe and North America.

The infected plants show yellow-green mottling, chlorosis and stunting. The viroid is transmitted by contaminated tools. The circular RNA molecule contains around 400 nucleotides and has a branched secondary structure.

For a review see Cho et al., 2013.