Syngenta Corporation

Kay V Riddell

Wolfgang Walter Schuch

Andrew James Greenland

Arthur B Tomsett

Mark X Caddick

The invention relates to a chemically-inducible plant gene expression cassette and to plant cells transformed therewith. The expression cassette is suitable for use in any dicotyledonous or monocotyledonous plant. It comprises a first promoter operatively linked to a regulator sequence which encodes a regulator protein, and an inducible promoter operatively linked to a target gene, the inducible promoter being activated by the regulator protein in the presence of an effective exogenous inducer whereby application of the inducer causes expression of the target gene. The regulator sequence may be derived from the alcR gene, and the inducible promoter may be derived from the alcA gene promoter (both obtainable from ). A chimeric promoter comprising an upstream regulatory region and a heterologous downstream transcription initiation region is also disclosed. The regulatory sequence may be derived from the alcA gene promoter.

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West Lothian, United Kingdom

Kay V Riddell