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Characterising resistance to Turnip mosaic virus (TuMV) in Turnip (Brassica rapa rapa)

By Amin A. Haj Kassem and John A. Walsh


A Brassica rapa rapa L. line has been identified with high resistance to seven isolates of Turnip mosaic virus (TuMV) (including UK 1, CHN 5, CZE 1, CDN 1, GBR 6, POL 1 and UK 4) representing the major pathotypes of the virus. Resistant plants showed no symptoms following mechanical inoculation with TuMV and no virus was detected in the plants by ELISA. A cross was made between the rapid-cycling Brassica rapa line R-o-18 (which has been found to be susceptible to all the TuMV isolates) and a plant from the resistant B. rapa rapa line. The small amount of the F1 generation seed available from this cross has been grown and inoculated with the seven TuMV isolates. F1 plants were uniformly resistant to the UK 1 isolate of TuMV, uniformly susceptible to the CHN 5 isolate (only 2 plants inoculated) and segregated for resistance and susceptibility to the other five TuMV isolates. This suggested that the parent B. rapa rapa plant used in the cross was probably homozygous for one, or more dominant resistance genes to the UK 1 isolate of TuMV and heterozygous for one, or more dominant resistance genes to the other TuMV isolates. When self seed (S1) from the parent plant from the resistant line was inoculated with the TuMV isolates GBR 6 and UK 4, the segregation for the former isolate was not significantly different from 3 resistant to 1 susceptible, whereas for the latter isolate, the segregation was 4 resistant to 9 susceptible, suggesting resistance to GBR 6 is controlled by a single dominant gene, whereas resistance to UK 4 is controlled by two or more dominant resistance genes. The putative resistance genes appear to confer hitherto unknown dominant TuMV resistance specificities, and in combination have the exciting potential of providing durable resistance to TuMV

Topics: QR355, SB
Publisher: Arab Society for Plant Protection
Year: 2008
OAI identifier: oai:wrap.warwick.ac.uk:726

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  1. (1962). A conspectus of aphids as vectors of plant viruses.
  2. (1990). A study on TuMV strain differentiation of cruciferous vegetables from ten provinces in China.
  3. (1999). Characterisation of resistance to turnip mosaic virus in oilseed rape (Brassica napus) and genetic mapping of TuRB01.Theoretical and doi
  4. (2002). Different classes of resistance to turnip mosaic virus in Brassica rapa. doi
  5. (1987). Epidemiology and control of virus diseases of vegetables. doi
  6. (1980). Evaluation of Chinese cabbage cultivars from Japan and the People’s Republic of China for resistance to turnip mosaic virus and cauliflower mosaic virus.
  7. (2007). Genetic control of broad-spectrum resistance to turnip mosaic virus in Brassica rapa (Chinese cabbage). doi
  8. (1989). Genetic control of immunity to turnip mosaic virus in winter oilseed rape (Brassica napus ssp. oleifera) and the effect of foreign isolates of the virus. doi
  9. (1994). Genetic mapping of turnip mosaic virus resistance in Lactuca sativa. doi
  10. (1995). Genetics of resistance to five strains of turnip mosaic virus in Chinese cabbage. doi
  11. (1993). Inheritance of resistance to turnip mosaic virus in Chinese cabbage. doi
  12. (1957). Investigation of virus diseases of brassica crops. doi
  13. (1996). Pathotypic variation in turnip mosaic virus with special reference to European isolates. doi
  14. (1999). Serotypic variation in turnip mosaic virus. doi
  15. (1992). The biology, epidemiology and control of turnip mosaic virus. doi
  16. (2000). The cylindrical inclusion gene of turnip mosaic virus encodes a pathogenic determinant to the Brassica resistance gene TuRB01. Molecular Plant-Microbe Interactions, doi
  17. (2003). The dual role of the potyvirus P3 protein of Turnip mosaic virus as a symptom and avirulence determinant in brassicas. Molecular Plant-Microbe Interactio ns, doi
  18. (2000). The genetic control of resistance to turnip mosaic virus (TuMV) in Brassica. PhD Thesis, doi
  19. (1994). The Potyviridae. doi
  20. (1991). The Potyvirus Group. doi
  21. (2002). Turnip mosaic virus and the quest for durable resistance. doi
  22. (1985). Turnip mosaic virus strains in cruciferous hosts in Taiwan. doi
  23. (1989). Turnip mosaic virus strains in southern Ontario, doi
  24. (1985). Viruses infecting winter oilseed rape (Brassica napus ssp. oleifera). doi

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