Phytopathology (1996) 86, p. S73 (Hughes et al.)

P.L. Hughes and J.F. Mrufy (1996)
Response of pepper plants to inoculation with Cucumber mosaic virus (CMV), Potato virus Y (PVY) and Tobacco etch virus (TEV) alone and in all combinations
Phytopathology 86 (11 suppl.), S73-S73
Abstract: Since 1992, a multiviral epidemic has devastated fresh market tomato crops in North Alabama. Five viruses were detected in tomato samples from the affected area, although CMV, PVY, and TEV occurred most frequently with CMV clearly being the predominant virus. Interestingly, pepper plants grown adjacent to severely affected tomatoes showed no sign of infection. This study was initiated to examine the response of pepper plants to inoculation with CMV, PVY, and TEV as single and mixed inocula under greenhouse conditions. Early Calwonder pepper plants inoculated at the 5-6 true leaf stage were more severely affected by the CMV-PVY combination than by other combinations of viral inocula. The margins became necrotic. Plants inoculated with the CMV-PVY-TEV combination were also severely affected but less than that observed in plants inoculated with the CMV-PVY combination. Inoculation of plants with a CMV-TEV or with PVY-TEV inoculum resulted in only mild systemic mosaic symptoms with no apparent stunting. When plants were inoculated at the 11-12 true leaf stage only mild systemic symptoms developed, regardless of the virus or the combination of viruses used as inoculum.

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Potato virus Y	Green pepper/chilli (Capsicum)
	Potato virus Y	Tomato (Solanum lycopersicum)
	Cucumber mosaic virus	Green pepper/chilli (Capsicum)
	Cucumber mosaic virus	Tomato (Solanum lycopersicum)
	Tobacco etch virus	Tomato (Solanum lycopersicum)