LHY — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0699010 (LHY, also known as CCA1) on barley chromosome 7H encodes a Myb/SANT domain-containing protein with RNA polymerase II-specific DNA-binding transcription activator activity, protein kinase regulator activity, and histone H3K9 acetyltransferase activity. The gene is associated with circadian rhythm regulation, photoperiodism, and photomorphogenesis, including both upregulation and downregulation of these processes. It is linked to flowering time, leaf senescence, anthocyanin metabolism, and temperature compensation of the circadian clock. Associations extend to agronomic traits including photoperiod-sensitive flowering, spot blotch response, vegetative vigor, leaf area, root morphology, shoot growth angle, starch grain synthesis, and responses to light quality, temperature stress, and nutrient availability. The gene product localizes to the nucleus, cytosol, and other cellular compartments.