Consequences ofSporidiobolus pararoseus killer toxin action on sensitive cells

Sensitive cells of Rhodotorula araucariae treated with killer toxin produced by two strains of the red basidiomycetous yeast Sporidiobolus pararoseus were stained with methylene blue and released UV absorbing material into the growth medium. They also behaved as permeabilized cells in a high-frequency field. All these phenomena indicate permeabilization of the sensitive cells.