Archives of Virology

, Volume 140, Issue 1, pp 65–74

Effect of temperature on cucumber mosaic virus satellite-induced lethal tomato necrosis is helper virus strain dependent

  • J. M. Kaper
  • L. M. Geletka
  • G. S. Wu
  • M. E. Tousignant
Original Papers

DOI: 10.1007/BF01309724

Cite this article as:
Kaper, J.M., Geletka, L.M., Wu, G.S. et al. Archives of Virology (1995) 140: 65. doi:10.1007/BF01309724

Summary

The effect of temperature on the response of tomato (Lycopersicon esculentum Mill. cv. Rutgers) to infections with the necrogenic cucumber mosaic virus (CMV) satellite D-CARNA 5 was investigated with each of four CMV strains D, 1, Y and S functioning as helper virus. At 24 °C lethal necrosis was observed in all infections. However, at 32 °C the response varied from total absence or reduction of necrosis with some strains to accelerated lethal necrosis with others. The total lack of necrotic response with CMV-S and the aggravated necrosis with CMV-Y at the higher temperature both turned out to be independent of the coinfecting satellite, and rather to correlate with the changing rate of viral RNA accumulation in tomato, which probably was responsible for the changes in pathogenic response. However, when CMV-D was helper virus, satellite accumulation decreased, while with CMV-1 it increased, respectively, while viral RNA accumulations were not seriously affected. Although these profound effects of temperature seem to link the necrotic response of tomato to the competitive replication dynamics of the infecting virus/satellite combination in the case of CMV-D/D-CARNA 5, temperature effects at other levels of disease induction probably play an important role as well.

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • J. M. Kaper
    • 1
  • L. M. Geletka
    • 1
  • G. S. Wu
    • 1
  • M. E. Tousignant
    • 1
  1. 1.Molecular Plant Pathology Laboratory, Plant Sciences Institute, Agricultural Research Service, U.S. Department of AgricultureBeltsvilleUSA

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