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
Mirabelle plum from Lorraine, France, making true Mirabelle Plums almost impossible to get in the US. Mirabelle plum Mirabelle plum, also known as mirabelle prune or cherry plum (Prunus domestica" subsp. "syriaca), is a cultivar group of plum trees of the genus "Prunus". It is believed that the plum was cultivated from a wild fruit grown in Anatolia. The mirabelle is identified by its small, oval shape, smooth-textured flesh, and especially by its red, or dark yellow colour which becomes flecked in appearance. They are known for being sweet and full of flavour. The fruit is primarily used in fruit preserves and