First report of citrus viroid V and citrus viroid VI in Australia infecting citrus.
Citrus viroid V (CVd-V) and citrus viroid VI (CVd-VI) are members of the Apscaviroid genus found in citrus growing areas worldwide but previously unreported from Australia. Other viroids, including the pathogenic Citrus exocortis viroid and Hop stunt viroid, have previously been reported in Australian citrus orchards. A Citrus reticulata field sample was submitted for routine pathogen screening. The presence of CVd-V and CVd-VI were detected based on various molecular analyses. This is thought to be the first detection of CVd-V and CVd-VI in Australia.