Chrysanthemum stem necrosis caused by a possible novel tospovirus . Detection of a novel tospovirus in chrysanthemum . Affected plants showed boat and spoon-shaped leaves, dwarfing and small fruit size. Electron microscopy of purified preparations showed the presence of two different types of filamentous particles, one virus was identified as being citrus tristeza closterovirus. It was provisionally called citrus seed-borne virus.
Citrus is a very important crop in the Mediterranean area.
Data is lacking on the impact of this virus on citrus production. Properties and incidence of a previously unreported seed-borne filamentous virus infecting citrus in New Zealand. The experimental host range appears to be restricted to Cucurbitaceae. Plants are reported to be seriously affected in Spain. Epidemic levels are mentioned in the Middle East since 1985.