Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Dahlia latent viroid and Potato spindle tuber viroid in dahlia plants in the UK.

Abstract

In 2017, routine viroid testing on 4 dahlia lines from 3 cultivars was done at a tissue culture facility in the UK and found Dahlia latent viroid (DLVd) and Potato spindle tuber viroid (PSTVd) in different cultivars. The initial investigation for viroid was performed using a digoxigenin (DIG) labelled full-length PSTVd RNA probe that can detect all known pospiviroids. The infected dahlia cultivars showed no obvious symptoms with either viroid; although the growth rate in tissue culture was observed to be slower than other dahlia cultivars, particularly the PSTVd-infected lines. This is thought to be the first report of DLVd in the UK and PSTVd in dahlia in the UK.