Barley yellow dwarf is a plant disease caused by the barley yellow dwarf virus, and is the most widely distributed viral disease of cereals. It affects the economically important crop species barley, oats, wheat, maize, triticale and rice. Barley yellow dwarf virus (BYDV) is a positive sense single-stranded RNA virus; the viron is not enveloped in a lipid coating. The virus is transmitted by aphids, and the taxonomy of the virus is based on genome organisation, serotype differences and on the primary aphid vector of each isolate.
The isolates and their major vectors (in parentheses) are:
- Subgroup I
MAV, a less severe strain carried by aphids (Grain aphid, Sitobion avenae), SGV (Schizaphis graminum), and PAV, a less severe strain carried by aphids (bird-cherry aphid, Rhopalosiphum padi, grain aphid, S. avenae, and others including Rose-grain aphid, Metopolophium dirhodum).
- Subgroup II, called Cereal Yellow Dwarf Virus, however CYDV is now recognised as a separate species belonging to the Polerovirus genus of the Luteoviridae family
RPV, the most severe strain carried by aphids (Bird-cherry aphid, Rhopalosiphum padi), RMV (Rhopalosiphum maidis)
BYDV-PAV; Barley yellow dwarf virus - PAV; IL8; interleukin 8; interleukin-8; 3 10C; alveolar macrophage chemotactic factor I; AMCF I; b ENAP; beta endothelial cell derived neutrophil activating peptide; chemokine (C X C motif) ligand 8; CXCL8; GCP 1; GCP1; granulocyte chemotactic protein 1; IL 8; K60; LECT; LUCT; lung giant cell carcinoma derived chemotactic protein; lymphocyte derived neutrophil activating peptide; LYNAP; MDNCF; MONAP; monocyte derived neutrophil chemotactic factor; monocyte derived neutrophil activating peptide; NAF; NAP 1; NAP1; neutrophil activating peptide 1; SCYB8; TSG 1; tumor necrosis factor induced gene 1; emoctakin; T-cell chemotactic factor; neutrophil-activating peptide 1; chemokine (C-X-C motif) ligand 8; beta-thromboglobulin-like protein; tumor necrosis factor-induced gene 1; monocyte-derived neutrophil chemotactic factor; monocyte-derived neutrophil-activating peptide; small inducible cytokine subfamily B, member 8; lung giant cell carcinoma-derived chemotactic protein; beta endothelial cell-derived neutrophil activating peptide; GCP-1; NAP-1