Reverse transcription of turnip yellow mosaic virus RNA primed with calf-thymus DNA hydrolysate: characterization of the purified cDNA product.

Complementary DNA was transcribed from turnip yellow mosaic virus RNA, using the method of Taylor et al. (1). The purified cDNA thus obtained sedimented between 2 and 4 S and was a mostly uniform transcript of template RNA. It hybridized with a sharp transition to homologous TYMV-RNA (Crt 1/2 = 2.7 x 10(-2)), but showed a low level of hybridization (less than 5%) to the RNAs of two other tymoviruses, namely Andean potato latent virus and eggplant mosaic virus.