Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Onion yellow dwarf virus, Leek yellow stripe virus, and Garlic common latent virus on garlic in Croatia.

Abstract

Vegetative propagation of garlic often leads to mixed virus infections that cause significant yield and quality reduction. Onion yellow dwarf virus (OYDV), Leek yellow stripe virus (LYSV) and Garlic common latent virus (GCLV) are the most common viruses in Allium species in the Mediterranean region. They are all transmitted by aphids in a nonpersistant manner. Among these three viruses only OYDV has been previously known to occur in Croatia; however, that report concerned onion infections. At the beginning of 2015, symptoms of yellowing and reduced growth were observed on autochthonous garlic cultivars in commercial fields in Zadar County (northern Dalmatia) and in an experimental field in Zagreb (planting material originating from eastern part of Croatia). A total of 213 symptomatic samples (95 from Zadar County and 118 from Zagreb) were collected and analysed. Based on the results of ELISA tests, PCR assays and BLAST analysis of the nucleotide sequences, the garlic cultivars were found to be infected with OYDV, LYSV, and GCLV. This is thought to be the first report of OYDV, LYSV, and GCLV on garlic in Croatia.