Alfalfa Mosaic Virus Isolated from Buddleia davidii Compared with Other Strains. B. Walter, Station de Pathologie Végétale, I.N.R.A., 68021 Colmar. J. Kuszala, Station de Pathologie Végétale, I.N.R.A., 68021 Colmar, and M. Ravelonandro and L. Pinck, Laboratoire de Virologie, Institut de Biologie Moléculaire et Cellulaire, 15, rue Descartes, 67084 Strasbourg, France. Plant Dis. 69:266-267. Accepted for publication 13 August 1984. Copyright 1985 The American Phytopathological Society. DOI: 10.1094/PD-69-266.

Alfalfa mosaic virus (AIMV) was isolated from Buddleia davidii in the south of France. Symptoms induced on different hosts by this isolate are reported; they differ from the symptoms described for AIMV isolated from B. davidii in East Germany in 1970. The isolate described in this report (AIMV-B) shows symptoms, RNA structure, and serological properties analogous to those of strain 425 from red clover. Strains S and B differ in their relative amounts of RNA 1 and 3.