PHYC — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0511090, designated HvPHYC on chromosome 5H, encodes a phytochrome C photoreceptor with red/far-red light photoreceptor activity, histidine kinase activity, and promoter-specific chromatin binding. The gene is associated with photoperiodism, vernalization response, circadian regulation, de-etiolation, chloroplast avoidance movement, and regulation of photosynthesis and plant organ morphogenesis. It is linked to anthocyanin and abscisic acid metabolism, hydrogen peroxide-mediated signaling, and responses to water-immersion restraint stress and low-fluence red light. Associations with agronomic traits include photoperiod-sensitive flowering time, phyllochron, leaf area, chlorophyll ratio, photosynthetic ability, starch grain synthesis, phosphorus uptake, glyphosate sensitivity, and responses to viral disease, temperature stress, and submergence. The protein localizes to the nucleus, cytosol, and plasmalemma, and is part of nuclear ubiquitin ligase complexes. Studies of related genes in other species link the phytochrome C family to photoperiod-dependent flowering, circadian clock regulation, and leaf expansion.