Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of melon yellow spot virus in broad beans (Vicia faba) in China.

Abstract

Melon yellow spot orthotospovirus (MYSV, genus Orthotospovirus, family Tospoviridae) is naturally transmitted by Thrips palmi. It was initially identified from a melon (Cucumis melo) plant in Shizuoka Prefecture, Japan. To date, MYSV has been identified to infect several cucurbits such as watermelon, melon, balsam pear, cucumber, pumpkin, wax gourd, and luffa. The virus has also been detected in pepper. In May 2018, a viral-like disease was observed on broad beans (Vicia faba) in a ~0.4-ha field in Shangyu County, Zhejiang Province, China. Diseased plants were dwarf, and numerous necrotic spots appeared on the upper leaves. To identify viral agents potentially associated with this disease, a sRNA library from a symptomatic sample was generated and sequenced. Based on the results of molecular investigations, the causal agent was identified as MYSV. This is thought to be the first report of MYSV infecting broad bean.