Cloning of a rice [Oryza sativa] cDNA encoding a transcription factor homologous to barley [Hordeum vulgare] GAMyb

A cDNA clone, OsGAmyb, which encodes a homologue to the barley Myb-like transcription factor, HvGAMyb, was isolated from a rice endosperm cDNA library. The clone was used to show that expression of the OsCAmyb gene in aleurone cells was stimulated by gibberellic acid and the gene product was shown to transactivate an amylase gene promoter in transient expression analyses.