A spatiotemporally regulated transcriptional complex underlies heteroblastic development of leaf hairs in Arabidopsis thaliana
Full PDF link Synopsis Age‐dependent development of leaf hairs (trichomes) on the abaxial (lower) leaf surface in Arabidopsis is regulated by integration of positional and temporal cues via a transcriptional complex comprising the leaf abaxial fate determinant KAN1 and the AP2‐like transcription factor TOE1 acting as a developmental timer. AP2‐like proteins, including TOE1, repress abaxial trichome formation in juvenile leaves. TOE1 forms a repressive complex with KAN1. KAN1‐ complex binds to the 3′ downstream sequence of GL1, a master regulator of leaf trichome production.