VIEW ARTICLE

A Morphological Comparison of Inclusions Induced by Tobacco Etch and Potato Y Viruses. D. E. Purcifull, Associate Virologist, Plant Pathology Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32601; J. R. Edwardson(2), and S. R. Christie(3). (2)Agronomist, Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32601; (3)Electron Microscope Technician, Plant Pathology Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville 32601. Phytopathology 60:779-782. Accepted for publication 26 November 1969. DOI: 10.1094/Phyto-60-779.

Striated inclusions were found in negatively stained leaf extracts from plants infected with either potato Y virus (PVY) or tobacco etch virus (TEV). As viewed in an electron microscope, the PVY-induced inclusions were generally quadrangular, but triangles were never observed. By contrast, the TEV-induced inclusions were characteristically triangular, although quadrangles were also observed. Characteristic shape of the inclusions was tested as a basis for distinguishing TEV from PVY by identifying coded samples.