Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Rose spring dwarf-associated virus in Rosa spp. in United Kingdom.

Abstract

In July 2019, a sample of Rosa spp. was submitted to Fera Science Ltd. via the Royal Horticultural Society gardening advice service. The sample (ID220) was sent in following the appearance of unknown symptoms including mottling, yellow/white patching, thin texture and a pink colour in the leaves. Based on molecular investigations (including RT-qPCR and high throughput sequencing), the causal agent was identified as rose spring dwarf-associated virus (RSDaV). To assess the spread of RSDaV in the UK, 171 roses were analysed using the RT-PCR assay. Samples were collected as part of a survey of rose viruses in the UK and both asymptomatic and symptomatic leaf samples, consistent with virus infections symptoms (mottling, yellow veining, distortion, and ringspots) were included. Only one sample (ID140) resulted positive for RSDaV, and no symptoms were identified. Previous analysis showed this sample was positive for Arabis mosaic virus by ELISA and RT-qPCR. This is thought to be the first report of RSDaV in Europe.