The introduction of dwarf varieties of cereals was fundamental to the green revolution, but in the post-genomic era, the manipulation of plant morphology could be more sophisticated. A recent publication by Tahar Ait-ali et al. describes the use of the ethanol-inducible transgene expression system to re-examine plant architecture, and the genes that determine it. Their findings have implications for the manipulation of plant height and yield, and demonstrate the efficacy of regulated transgene expression for functional genomics.
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