Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: November 23, 2004
Publication Date: February 1, 2005
Citation: Hanu, R.P., Hellier, B.C., Dugan, F.M. 2005. First report of onion yellow dwarf virus, leek yellow stripe virus and garlic common latent virus in garlic in washington state. Plant Disease. V. 89. P. 205. Interpretive Summary: The Western Regional Plant Introduction Station (part of the USDA-ARS National Plant Germplasm System) in Pullman, Washington, maintains and distributes accessions of garlic to breeders and researchers world-wide. Although Washington State ranks fourth in the country in garlic production, information regarding virus diseases of garlic in Washington is scanty. A team of USDA-ARS and Washington State University scientists, examining garlic from the 2004 season, have for the first time reported three viruses as occurring in Washington State: Onion yellow dwarf virus, Leek yellow stripe virus and Garlic common latent virus. The incidence of these viruses, and the threat posed by another virus, Iris yellow spot virus (not detected in this survey), suggest a need for evaluating garlic accessions for virus infection.
Technical Abstract: Washington State ranks fourth in the United States in terms of garlic (Allium sativum) production, but little specific documentation is available for specific viruses infecting garlic. Virus-like symptoms appeared in June, 2004, in several varieties of garlic grown by the USDA-ARS Western Regional Plant Introduction Station (WRPIS) at Pullman, WA. Onion yellow dwarf virus, Leek yellow stripe virus and Garlic common latent virus were diagnosed on the basis of symptoms, and with PCR primers and GenBank sequences specific to each virus. ELISA and PCR primers failed to confirm the presence of Iris yellow spot virus in garlic from the WRPIS Pullman facility. This is the first report of Onion yellow dwarf virus, Leek yellow stripe virus and Garlic common latent virus in Washington State.