LHY — Medicago truncatula

Summary

MTR_7G118330, designated MtLHY (also known as MtCCA1), encodes a Myb/SANT-domain transcription factor with DNA-binding transcription activator activity, RNA polymerase II binding, histone H3K9 acetyltransferase activity, and protein kinase regulator activity. In barrel medic, MtLHY is associated with circadian regulation of gene expression, both upregulation and downregulation of circadian rhythm, temperature compensation of the circadian clock, positive regulation of photomorphogenesis and anthocyanin metabolism, negative regulation of leaf senescence, starch metabolism, and responses to UV-C and gamma radiation. The gene is linked to numerous agronomic traits including photoperiod-sensitive flowering time, leaf area, leaf number, vegetative vigor, root system morphology, fruit set, seed viability, cadmium and iron concentration, phosphorus uptake, brassinosteroid and gibberellin biosynthesis, and responses to aphids, temperature stress, and light quality. Related genes in other species are linked to circadian rhythm, photoperiod-dependent flowering, light signaling, biomass, and drought escape.