Antigenic Relationship between Puerto Rican Pepper-Mosaic Virus and a Strain of Potato Virus Y

Abstract

Antisera were prepared against the Puerto Rican pepper-mosaic virus (P.R.P.M.) and a typical strain of potato virus Y by inoculating rabbits with clarified sap from tobacco plants infected separately with each virus. All the four sera thus prepared reacted with both antigens. Cross-absorption tests showed that the P.R.P.M. virus possessed a minor antigenic component not found in the Y virus.