Plum pox show no symptoms on leaves or fruit. Not all infection in "Prunus" are characterized by a ring symptom on leaves. Several cultivars show yellowing line patterns and blotches, or necrotic ring symptoms on expanded leaves. Leaf distortion has also been observed. Infected fruit can develop yellow rings or blotches, or brown rings, and some plum and apricot fruit can be severely deformed and bumpy. The seed of many infected apricots and some plums show rings. Many non-"Prunus" species, in at least nine plant families, have been infected artificially with one or more strains of the plum pox virus, and in
Smoked plum in pharmacologic experiments. Smoked plum Smoked plum is the smoked fruit of Asian plums, used in East Asian cuisine and medicine. It is called wūméi (; ) in Chinese, omae (; ) in Korean, and ubai (; ) in Japanese. Smoked plums, matte black to dark brown, with a rugged surface, have a unique flavor with a sour taste. The fruit is spherical or oblate, around long and in diameter. The surface is wrinkled, with the round stem-end underside. The fruit kernel is hard, olate, yellowish brown, long, wide, and thick, with a dotted surface. The seed is flat obloid