IAM Plant Biotech Unit Plant Pathology Webpages

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Cherry Necrotic Rusty Mottle Virus (CNRMV) CNRMV is responsible for a group of diseases described in the USA, including Lambert mottle, mild rusty mottle and necrotic rusty mottle, of which only necrotic rusty mottle is known in Europe. The usual host of CNRMV is sweet cherry. The virus causes dark, irregular mottles on young leaves that spread over the whole foliage in June. Later the mottles become necrotic and perforate the leaf. After a strong attack also necrosis of the bark appear and buds do not break in the following spring. Cool springs followed by a hot summer favour the disease. Other cherries, apricot and peach may be receptive, but infection remains latent with no visible symptoms. About 10 % of cherry cultivars and rootstocks are contaminated with the pathogen. Natural spread was never observed. Sequence Info (NCBI database) Isolates in the Vienna Collection Detection methods