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Cytology and Histology

Potyvirus Cylindrical Inclusions- Subdivision-IV. J. R. Edwardson, Agronomist, University of Florida, Institute of Food and Agricultural Sciences, Agronomy and Plant Pathology Departments, Plant Virus Laboratory, Gainesville 32611; R. G. Christie(2), and N. J. Ko(3). (2)(3)Biological scientist, and graduate student, respectively, University of Florida, Institute of Food and Agricultural Sciences, Agronomy and Plant Pathology Departments, Plant Virus Laboratory, Gainesville 32611. Phytopathology 74:1111-1114. Accepted for publication 27 February 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/Phyto-74-1111.

Subdivision-IV cytoplasmic cylindrical inclusions consisting of pinwheels, scrolls, and short curved laminated aggregates are induced by 17 potyviruses. Five of these viruses infect primarily monocots; 12 infect primarily dicots. Although most isolates of potato virus Y induce subdivision-IV cylindrical inclusions, at least one isolate induces subdivision-I cylindrical inclusions, pinwheels, and scrolls. Viruses inducing scrolls and short curved laminated aggregate inclusions are assigned to subdivision-IV.