The virus world of fig mosaic disease.

Fig mosaic disease (FMD) is a cosmopolitan disease of fig (Ficus carica) characterized by various patterns of discolouration (mosaic, chlorotic mottling and blotching, vein banding, ringspots, line patterns) and malformation (twisting, puckering, rosetting) of the leaves. Infected plants have reduced vigour and may bear small mottled fruits. FMD has a viral aetiology but its causal agents are still under scrutiny.