Pioneer Hi-Bred International, Inc.

The United States of America as Represented by the Department of

Rod Townsend

Jon Duvick

Bradley Allen Roth

Michael D McMullen

Debra Blair

Methods and materials are provided to isolate the coat protein genes from maize chlorotic dwarf virus. One or more of these genes (MCDV-CP.sub.1, MCDV-CP.sub.2 or MCDV-CP.sub.3) is then incorporated in an expression cassette designed for suitable expression in a plant cell system. The resulting transformation vector is then introduced into maize to provide cross-protection to MCDV or related viral infections.

Maize chlorotic dwarf virus and resistance thereto

In the present invention, methods and materials are provided to isolate the coat protein gene from Maize Dwarf Mosaic Virus--Strain A (MDMVA). This gene (MDMVA-CP) is then incorporated in an expression cassette designed for suitable expression in a plant cell system. The resulting transformation vector is then introduced into maize callus to provide cross-protection to MDMV or related viral infections.

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Des Moines, IA, United States of America

Rod Townsend