Plant leaf structure is classified as either simple or compound. A simple leaf is a single leaf, whereas a compound leaf is composed of several leaflets emerging from a single compound leaf primordia. Liangliang He, Yu Liu and colleagues have identified a regulator of compound leaf formation in Medicago truncatula, leading to the discovery of an undefined class of eudicot-specific BEL1-like homeodomain proteins and a molecular framework controlling trifoliate leaf patterning.
- Liangliang He
- Yu Liu
- Jianghua Chen
