Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Concurrent presence of cucumber mosaic virus serotypes in certain tomato growing areas of Iran.

Abstract

During the growing season of 1991-1992, a total of 462 leaf samples from mosaic affected tomato plants were collected from major tomato growing areas of Iran. 67 samples were found to be infected with cucumber mosaic cucumovirus (CMV). Ten CMV isolates were selected for characterization. Antisera were produced in rabbits against 4 isolates. In serological double diffusion tests the 10 isolates fell into 2 groups, based on reciprocal spur formation. Serogroup 1 was represented by only 1 isolate whereas the second group was composed of the remaining 9. Purified preparations of the selected CMV isolates contained isometric particles measuring 28.5-29 nm in diameter. Spur formation was not evident when degraded virus particles of the 2 serogroups were compared by agar double diffusion tests; therefore the antigenic differences were suspected to be due to the neotypes of the virus particles. Both serotypes were present in Mazandaran concurrently.