Pioneer Hi-bred International, Inc.

Norbert Brugière

Dwight T Tomes

Xiaomu Niu

Haiyin Wang

Sabine Susanne Hantke

The present invention provides compositions and methods for regulating expression of nucleotide sequences in a plant. Compositions and methods include expression cassettes and transformed plants and provide for downregulation of cytokinin oxidase in a plant.

Cytokinin oxidase promoter from maize

The present invention provides compositions and methods for regulating expression of nucleotide sequences in a plant. Compositions may comprise a novel nucleic acid sequence for a promoter with tissue specificity and/or cytokinin inducibility. A method for expressing a heterologous nucleotide sequence in a plant using the promoter sequence is also provided. The method comprises transforming a plant cell to contain a heterologous nucleotide sequence operably linked to the promoter of the present invention and regenerating a stably transformed plant from the transformed plant cell. Other methods provide for downregulation of cytokinin oxidase in a plant.

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Johnston, IA, United States of America

Norbert Brugière