Description
A virus with filamentous particles about 445 x 13 nm, known to occur naturally only in Dioscorea composita and D. floribunda in Central America. It has no known vector but is readily transmissible by inoculation of sap to species in six families.
The virus alone causes no obvious symptoms in Dioscorea composita and D. floribunda, its only known natural hosts, but it often occurs together with dioscorea green banding virus which induces mosaic and green-banding leaf symptoms