GLK1 — Arabidopsis thaliana

Summary

AT2G20570 (GLK1, GOLDEN2-LIKE 1) in Arabidopsis thaliana encodes a MYB-domain transcription factor that binds sequence-specific DNA and is localized in the nucleus. The gene is associated with the regulation of chlorophyll biosynthesis and photosynthesis, as well as anthocyanin metabolism and plastid gene expression. GLK1 has been linked to traits including photosynthetic ability, chloroplast development, seed weight, carotenoid content, submergence tolerance, heterosis, salt response, and resistance to Fusarium graminearum. It is also connected to leaf and stem senescence, cotyledon opening, anther morphology, and responses to abscisic acid and ethylene. Studies of related genes in other species link the family to fruit ripening, fruit quality, chloroplast development, and disease resistance.