Potato spindle tuber viroid
Concept
Viroids are single-stranded covalently closed circular RNA molecules existing as highly base-paired rod-like structures.
1976 · Heinz L. Sänger, Günther Klotz, et al. · Proceedings of the National Academy of Sciences
RNA-directed de novo methylation of genomic sequences in plants
1994 · Michael Wassenegger, Sabine Heimes, et al. · Cell
Nucleotide sequence and secondary structure of potato spindle tuber viroid
1978 · Hans Groß, Horst Domdey, et al. · Nature