Phytopathology (1996) 86, p. S72 (Sanchez-Cuevas et al.)

M.C. Sanchez-Cuevas and S.T. Nameth (1996)
Viruses associated with mosaic virus and white leaf in double petunia
Phytopathology 86 (11 suppl.), S72-S72
Abstract: Double petunia (Petunia hybrida) plants showing mild to severe mosaic, leaf puckering and white leaf symptoms were analyzed to determine the causal agent. Electron microscopy of leaf-dip and purified virus preparations indicated the presence of a rigid rod-shaped virus with physical properties similar to those of tobacco mosaic virus (TMV). Viral-associated,. double-stranded RNA analysis, enzyme-linked immunosorbent assay (ELISA), and indicator host analysis. on symptomatic plants confirmed the presence of TMV Electron microscopy of leaf-dip preparations also revealed the presence of a second virus. This virus was a semi-flexuous rod with physical properties similar to those of potato virus X (PVX). Host range analysis also suggested that a virus similar to PVX was present in the symptomatic petunia plants. To date, all double petunias analyzed, both from commercial green-houses and garden centers, have tested positive for the presence of these two viruses.

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.
	Tobacco mosaic virus	Petunia (crop)