GL2 — Arabidopsis thaliana

Summary

AT1G79840, designated GL2 (GLABRA2) in Arabidopsis thaliana, encodes a homeodomain-leucine zipper (HD-Zip IV) transcription factor with a START lipid-binding domain. The protein localises to the nucleus and exhibits DNA-binding and transcription factor activity. GL2 is associated with epidermal cell fate specification, trichome development and spacing, root hair patterning, and seed coat mucilage synthesis. It is linked to the regulation of cell differentiation, lateral inhibition, and G1 phase progression. The gene is associated with leaf trichome density and morphology, seed size, shape, colour, and oil content, root and lateral root length, fruit size, germination rate, stem elongation, and leaf lamina area. Additional associations include fatty acid elongation, ceramide and sterol biosynthesis, and osmotic stress and auxin responses.