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Virus diseases
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GLRaV-1
GLRaV-3
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Cherry Twisted Leaf Virus
(ChTLV)


Discovered in the USA and Canada on cherry, ChTLV is so far unknown in Europe and does not seem epidemic. Several other Prunus species are receptive but tolerant, including peach and some plums.

The disease manifests itself on the foliage of sweet cherry, Prunus avium, in spring. After 4 - 5 almost normal leaves, subsequent leaves are folded downwards and become twisted. The symptoms resemble those induced by a severe aphid attack.

Fruits are mottled, deformed and riped delayed. Interestingly, trees recover, when the temperatures rise in June.

Indexing seems the only reliable detection method so far. Typical symptoms of twisted leaf from most, but not all isolates can be obtained on the cherry cultivar ´Bing´ by graft inoculation.


Isolates in the Vienna Collection

Detection methods



last updated October 8, 2001 by Siegfried.Huss