GL1 — Arabidopsis thaliana

Summary

AT3G27920, known as GL1 (GLABRA 1) or MYB0 in Arabidopsis thaliana, encodes a MYB-domain transcription factor with promoter-specific chromatin binding, transcription coactivator activity, and DNA binding functions. GL1 is associated with trichome differentiation and cell type specification, and is linked to chromatin looping, stem cell development, lateral inhibition, and regulation of trichome spacing and morphogenesis. It is associated with diverse traits including leaf lamina area, trichome density, seed color, stem length, root epidermal cell length, plant cell shape, male sterility, iron concentration, and biotic stress responses. The gene product localizes to the nucleus, cytoplasm, and root hairs, and is associated with hormone signaling pathways including gibberellin and jasmonic acid. Related genes in other species link the GL1 family to root epidermal patterning, anthocyanin production, and stomatal formation.