Numbers of Inclusion Bodies Produced by Mild and Severe Strains of Citrus Tristeza Virus in Seven Citrus Hosts. R. H. Brlansky, University of Florida, IFAS, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850. R. F. Lee, University of Florida, IFAS, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850. Plant Dis. 74:297-299. Accepted for publication 1 November 1989. Copyright 1990 The American Phytopathological Society. DOI: 10.1094/PD-74-0297.

Inclusion bodies produced by citrus tristeza virus (CTV) in seven citrus hosts (Citrus aurantifolia, C. aurantium, C. excelsa, C. hystrix, C. limon, C. paradisi, and C. sinensis) infected with five biologically different isolates were stained with azure A and enumerated. Over all citrus hosts, the number of the inclusion bodies was positively related to strain severity and to virus titer as determined by ELISA. This trend was most evident in the more susceptible C. aurantifolia, C. excelsa, C. hystrix, and C. sinensis and least apparent in the less susceptible C. aurantium, C. limon, and C. paradisi. No differences were noted in the types of inclusions produced in the various hosts.