Diseases associated with this genus include: stunting, yellow to orange leaf discoloration with fewer tillers.

[1][2] Tungro means 'degenerated growth' in a Filipino dialect[2] and the virus was first observed in the Philippines 1975.

The virus exits the host cell by nuclear pore export, and tubule-guided viral movement.

The panicles are often poorly developed and the grains are also often covered with dark brown blotches and are lighter weight than those of healthy plants.

[4] Oryza officinalis in Sukhothai Province, Thailand was reported in 1990 to be highly resistant to tungro and already in use in several cultivars.