Nepovirus myrtilli
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Author(s): Annemiek Schilder, Michigan State University
Source: Viruses (2012), 4, p. 2834
Nepovirus myrtilli
Assigned virus:
• blueberry leaf mottle virus (BLMoV)
The blueberry leaf mottle virus was first described from blueberries in Michigan, U.S. in 1977 and until 2016, its distribution appeared to be confined to parts of north-eastern North America (Martin et al., 2012). However, in 2016 it was also reported to infect grapevine in Korea (Kwak et al.). Infected blueberry bushes are stunted with smaller, distorted leaves, leaf mottling and poor yield. Especially northern highbush blueberry cultivars show severe symptoms. In grapevine, infections result in delayed bud break, pale green foliage, and irregular fruit clusters with elongated fruits.
BLMoV is closely related to the cherry leaf roll virus, assigned to Nepovirus avii, and like that virus is transmitted through pollen and seeds. Many nepoviruses are transmitted by nematodes, but attempts to demonstrate this also for BLMoV have been unsuccessful (Martin et al., 2012).
