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Summary
Plum fruit crinkle, a virus disease of plums, has been found in New Zealand on three trees of the Japanese plum variety Sultan.
It causes crinkling and internal necrosis of fruits and transient mottling and faint chlorotic line patterns on leaves. In many respects symptoms resemble those of the serious virus disease known as plum pox in Europe.
It is possible that plum pox and plum fruit crinkle are caused by the same disease and that variations in symptoms are the result of host, virus strain, or climatic differences.
Plum fruit crinkle has been transmitted experimentally from Sultan to Sultan, George Wilson, and Shiro plum trees.
An attempt is being made to eradicate the disease from New Zealand.