oat necrotic mottle virus oat necrotic mottle virus oat necrotic mottle virus (onmv) is a plant pathogenic virus of the family potyviridae. oat necrotic mottle virus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: pisuviricota class: stelpaviricetes order: patatavirales family: potyviridae genus: tritimovirus species: oat necrotic mottle virus