ISHS Acta Horticulturae 656: X International Symposium on Small Fruit Virus Diseases
FURTHER STUDIES ON THE MOLECULAR BIOLOGY OF RASPBERRY BUSHY DWARF VIRUS AND THE DEVELOPMENT OF RESISTANCE TO IT IN PLANTS |
| Authors: | M.R. MacLeod, N.T. Wood, J.A. Sinclair, M.A. Mayo, W.J. McGavin, L. Jorgensen, A.T. Jones |
| Abstract:
The pollen-borne Raspberry bushy dwarf virus (RBDV; genus Idaeovirus) is a serious pathogen of Rubus worldwide and it is proving difficult to control its spread and effects in crops. Of several distinct isolates of RBDV, we have completely sequenced and studied in detail isolates D200 (the Scottish type isolate), RB (a natural variant able to overcome the RBDV resistance gene, Bu) and Can-S (a laboratory variant that produces severe symptoms in herbaceous test plants). We report sequence comparisons between these three isolates. In approaches to produce red raspberry cultivars resistant to RBDV, especially RBDV-RB isolates, four viral gene constructs under the control of a novel promoter derived from Strawberry vein banding virus have been used in Agrobacterium-mediated transformations. We also report apparent resistance to RBDV-RB in an infectible raspberry cultivar, due possibly to somaclonal variation. | |
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