HY3 — Solanum lycopersicum

Summary

SOLYC05G053410.4 (HY3, also known as SlPHYB) on tomato chromosome 5 encodes a protein with domains of the phytochrome A-E family, including a phytochrome chromophore attachment domain, GAF, PAS, and histidine kinase domains, and is annotated with tetrapyrrole binding activity. This gene is associated with the regulation of response to red or far-red light, positive regulation of the phytochrome signaling pathway, and phytochrome chromophore anabolism. It has been linked to a wide range of agronomic traits including grain yield, fruit set, fruit ripening, flower diameter, panicle number, specific leaf area, plant dry weight, vegetative vigor, photoperiod sensitivity, and light quality response. Additional associations include lycopene content, anthocyanin synthesis, salinity tolerance, drought stress response, disease resistance, and herbivore defense.