Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of barley yellow dwarf virus-PAV infecting oats (Avena sativa) in Taiwan.

Abstract

In April 2017, yellowing, V-shape reddening, and purple symptoms were observed on 7.9% of the mature leaves of the oat plants grown in the experimental field of National Taiwan University (NTU) in Taipei city, Taiwan. A total of 37 leaf samples were collected, with suspected virus-infection symptoms in the experimental field for virus screening. The samples were expressing varying degrees of yellowing, browning, or typical barley yellow dwarf virus (BYDV)-associated V-shape reddening and purple symptoms. An additional five samples with no symptoms were also collected. These 37 samples belong to 22 oat lines, including two registered cultivars and 20 unreleased breeding lines. Based on the phylogenetic analysis of coat protein (CP) gene sequences, the causal agent was identified as Barley Yellow Dwarf Virus-PAV (BYDV-PAV). This is thought to be the first report of BYDV-PAV in Taiwan.