LHY — Phaseolus vulgaris

Summary

PHAVU_009G259650, designated PvLHY (also known as PvCCA1), encodes a Myb/SANT domain-containing DNA-binding transcription activator with RNA polymerase II-specific activity, protein kinase regulator activity, and histone H3K9 acetyltransferase activity. This French bean gene on chromosome 9 is associated with circadian regulation of gene expression, including both upregulation and downregulation of the circadian clock, temperature compensation, and starch metabolism. It is linked to negative regulation of leaf senescence, positive regulation of photomorphogenesis and anthocyanin metabolism, and responses to UV-C and gamma radiation. PvLHY is associated with numerous agronomic traits including photoperiod-sensitive flowering time, fruit set, leaf area, vegetative vigor, root system morphology, seed viability, cadmium concentration, iron concentration, phosphorus uptake, brassinosteroid and gibberellin biosynthesis, and responses to aphids, temperature stress, and light quality. Related genes in other species link the family to circadian rhythm, photoperiod-dependent flowering, and light signaling.