Cucumovirus (genus)

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Cucumber mosaic virus particles - (a) Negative-contrast electron micrograph (courtesy of A. De Stradis, IPSP-CNR, Bari, Italy) and (b) reconstruction (courtesy of Dr K.L. Perry, Cornell University, Ithaca, NY, USA, Dr T. Smith, University of Texas, Galveston, Texas, USA and A. Paredes, NCTR/ORA, Arkansas USA) - Bar, 50 nm (click on image to enlarge it)
Source: Journal of General Virology (2019), 100, p. 1207

Cucumovirus (genus)

The genus includes viruses similar to the Cucumber mosaic virus, a very common plant virus with many hosts. The viruses cause mosaic symptoms and are transmitted by aphids or through sap.

They have small isometric particles (29 nm) with a tripartite, single stranded RNA plus sense genome (RNA1 with 3300-3400 nt, RNA2 with ~3000 nt, RNA3 with 2100-2200 nt). The ssRNA is translated into double stranded RNA.

Currently, the following species have been entered into the system: