|CONVERSE, RICHARD - Former ARS Employee|
Submitted to: Compendium of Blackberry and Raspberry Diseases and Insects
Publication Type: Book / Chapter
Publication Acceptance Date: 2/22/2010
Publication Date: 6/28/2017
Citation: Converse, R.H., Martin, R.R. 2017. Apple mosaic virus. In: Martin, R.R., Ellis, M.A., Williamson, B., Williams, R.N., editors. Compendium of Raspberry and Blackberry Diseases and Pests. 2nd edition. St. Paul, MN: APS Press. p. 78.
Technical Abstract: Apple mosaic virus (ApMV), a member of the ilarvirus group, naturally infects Betula, Aesculus, Humulus, and several crop genera in the family Rosaceae (Malus, Prunus, Rosa and Rubus). ApMV was first reported in Rubus in several blackberry and raspberry cultivars in the United States and subsequently in red raspberry cultivars in Germany and in R. parviflorus (thimbleberry) in British Columbia. To date, there have been no studies of the effects of ApMV on fruit yield in Rubus. Infected Rubus plants are often symptomless and generally appear to produce fruit of normal yield and quality. In the red raspberry cultivar Schoenemann naturally infected in Germany, ApMV caused bright yellow-white leaf mosaic and sometimes pale green foliar rings and spots but no fruit symptoms. The virus is readily detected using serological (ELISA) or molecular (RT-PCR) assays. The means of natural spread is unknown, though root grafting and pollen transmission have been suggested. The virus is of minor importance in Rubus species.