1887

Abstract

Full-length biologically active cDNAs of brome mosaic virus genomic RNAs 1, 2 and 3 were constructed by joining cDNA fragments. The cDNAs were constructed so that, at the 5′ ends, unique BI sites were present at the site of initiation of transcription. The cDNAs were inserted between a modified cauliflower mosaic virus (CaMV) 35 RNA promoter and terminator regions derived from CaMV DNA, and cloned into pUC18. When a mixture of the plasmid DNAs was inoculated onto leaves, local lesions appeared 5 to 6 days later. However, no symptoms appeared in similarly inoculated barley plants. Plasmid cDNAs with extra sequences at the 5′ end were infectious but RNAs transcribed from cDNAs with similar sequences were not.

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/content/journal/jgv/10.1099/0022-1317-72-2-243
1991-02-01
2021-09-24
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