Activation of latent transgenes in Arabidopsis using a hybrid transcription factor

Dave Guyer, Ann Tuttle, Sabrina Rouse, Sandra Volrath, Marie Johnson, Sharon Potter, Jörn Görlach, Steve Goff, Lyle Crossland, Eric Ward

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


A hybrid transcription factor comprising a fusion of the DNA-binding domain of Saccharomyces cerevisiae GAL4 and the transcription activation domain of maize Cl was expressed in stably transformed Arabidopsis. Additional transgenic lines were created containing test genes controlled by a synthetic promoter consisting of concatemeric copies of the cis-acting site recognized by GAL4 (UAS (g)) fused to a minimal promoter. The GAL4/Cl effector line was crossed to two lines containing a synthetic promoter/GUS fusion. Both histochemical staining and GUS activity assays indicate strong activation of GUS expression was achieved only after crossing. The GAL4/C1 effector line was also crossed to 15 lines containing a synthetic promoter/antisense adenylosuccinate synthetase gene. Severely retarded growth, and in some cases lethality, was observed in 40% of the F1 lines. This system of activation by crossing is generally useful for activating expression of test transgenes.

Original languageEnglish (US)
Pages (from-to)633-639
Number of pages7
Issue number2
StatePublished - Jun 1998

ASJC Scopus subject areas

  • Genetics


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