@article{mbs:/content/journal/jgv/10.1099/0022-1317-82-4-941, author = "Canto, Tomas and Choi, Seung Kook and Palukaitis, Peter", title = "A subpopulation of RNA 1 of Cucumber mosaic virus contains 3′ termini originating from RNAs 2 or 3", journal= "Journal of General Virology", year = "2001", volume = "82", number = "4", pages = "941-945", doi = "https://doi.org/10.1099/0022-1317-82-4-941", url = "https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-82-4-941", publisher = "Microbiology Society", issn = "1465-2099", type = "Journal Article", abstract = "Tobacco plants transgenic for RNA 1 of Cucumber mosaic virus and inoculated with transcript of RNAs 2 and 3 regenerated viral RNA 1 from the transgenic mRNA, and the plants became systemically infected by the reconstituted virus. cDNA fragments corresponding to the 3′ non-coding region (NCR) of viral RNA 1 were amplified, cloned and sequenced. In some clones the termini of the 3′ NCR corresponded to those of viral RNAs 2 or 3. This suggested that in some cases RNA 1 may have been regenerated during replication by a template switching mechanism between the inoculated transcript RNAs and the mRNA. However, encapsidated, recombinant RNA 1 with the 3′ NCR ends originating from RNAs 2 or 3 also was found in virus samples that had been passaged exclusively through non-transgenic plants. Thus, these chimeras occur naturally due to recombination between wild-type viral RNAs, and they are found encapsidated in low, but detectable amounts.", }