Host Range of Rhizomonas suberifaciens, the Causal Agent of Corky Root of Lettuce

Abstract

(...) R.s. induced corky root symptoms on endive, common sowthistle, and prickly lettuce of the Compositae but not on safflower and sunflower. The pathogen was reisolated from each of the susceptible hosts, and the reisolated strains were similar to the original strain in affinity to polyclonal antibodies and pathogenicity on lettuce. Inoculation of species of the Chenopodiaceae, Cruciferae, Cucurbitaceae, Gramineae, Leguminosae, Solanaceae, and Umbelifferae with R.s. did not result in visible symptoms, except for a hybrid carrot cultivar that reacted with root proliferation and orange-brown discoloration of feeder roots