| Literature DB >> 6314259 |
D E Cress, M C Kiefer, R A Owens.
Abstract
Contiguous restriction fragments from two cloned partial-length potato spindle tuber viroid (PSTV) cDNAs were used to construct recombinant DNAs containing full-length monomeric and dimeric PSTV cDNA. When five different PSTV cDNA plasmids and RNA isolated from E. coli cells harboring these plasmids were tested for infectivity on tomato, plasmid DNAs containing PSTV cDNA dimers were infectious. RNA transcripts containing the sequence of PSTV from these plasmids were also infectious. The sequences of the viroid progeny and the cloned DNA were identical. In vitro mutagenesis of infectious PSTV cDNAs will allow systematic investigation of the role of specific sequences in viroid replication and pathogenesis.Entities:
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Year: 1983 PMID: 6314259 PMCID: PMC326416 DOI: 10.1093/nar/11.19.6821
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971