grapevine chrome mosaic virus grapevine chrome mosaic virus grapevine chrome mosaic virus (gcmv) is a plant pathogenic virus of the family secoviridae. grapevine chrome mosaic virus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: pisuviricota class: pisoniviricetes order: picornavirales family: secoviridae genus: nepovirus species: grapevine chrome mosaic virus synonyms hungarian chrome mosaic virus