Transmission of virus-like particles from the infected hypovirulent strain of Cercospora beticola into virulent healthy strains was observed. The joint cultivation of the light poorly sporulating hypovirulent strain C61 containing virus-like particles and dsRNK with dark virulent intensively sporulating C26, C34 and C42 strains without virus-like particles and dsRNA resulted in the rich anastomosis connection between coloured thicker hyphae of virulent strains and thinner hyaline hyphae of the hypovirulent strain. Transmission of virus-like particles and dsRNA via anastomosis from the hypovirulent strain into virulent ones has been proved biochemically by the UV spectra and polyacrylamide gel electrophoresis. Besides, the originally healthy virulent strains have converted and gained the properties of the hypovirulent strain thus demonstrating not only the transfer of virus agent but also its infectivity.
Pospíšil J., Otčenášek M., Postupa J., Vejbora O., Šteiner I. (1989): Trichosporon capitatum as a little known opportunistic mycotic agent in man. – Česká Mykologie 43(3): 149–154.
