Summary
Plasmids containing various fragments of the β-glucuronidase (GUS) gene were placed in antisense orientation downstream of the cauliflower mosaic virus 35S promoter and cotransfected with a 35S-gus construct into tobacco mesophyll protoplasts. None of the partial-length sequences were as effective as the full-length sequence in reducing GUS activity. The presence of a polyadenylation sequence downstream of the antisense sequence had an enhancing effect. The activity of the antisense sequence was largely affected by the incubation temperature of the transfected protoplasts. The chloramphenicol acetyltransferase (CAT) gene was fused to the gus coding sequence. When this construct was cotransfected with an antisense sequence directed against CAT, GUS activity was reduced. The implications of these results for the design and uses of antisense sequences are discussed.
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Communicated by M. R. Davey
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Guerineau, F., Waugh, R. & Brown, J.W.S. Parameters affecting the activity of antisense RNA sequences in tobacco protoplasts. Plant Cell Reports 13, 703–708 (1994). https://doi.org/10.1007/BF00231628
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DOI: https://doi.org/10.1007/BF00231628