Symptoms Jonathan spot originates at the lenticels. The pattern of affected tissues may vary as much within certain varieties as it does among them. Two distinct types of spots may occur on the Jonathan variety. These spots penetrate the flesh somewhat below the surface of the skin. This is deeper than other types observed.
Affected lenticels are darker than the surrounding brown skin and are only slightly sunken.
The surrounding brown skin may be slightly sunken, depending on how long the condition has been present. Next to Jonathan, Rome Beauty is about as susceptible to Jonathan spot as any variety on the market. A full range of symptoms has been observed on Rome Beauty. Often only the lenticel was sunken. In the most severely affected fruits, the discolored lenticels were so near together that the surrounding brown skin coalesced, making a large brown area on the skin.