HY8 — Cicer arietinum

Summary

CaHY8 (LOC101506511) on chickpea chromosome 4 encodes a protein with phytochrome family domains including GAF, PAS, and histidine kinase. The gene is associated with photoreceptor activity, tetrapyrrole binding, and DNA-binding transcription activator activity. CaHY8 has been linked to a wide range of traits including grain yield, seed set, photoperiod sensitivity, vegetative vigor, leaf area, branch angle, flower diameter, and fruit set. It is also associated with responses to far-red light, water-immersion restraint stress, and glyphosate sensitivity. The gene is associated with chloroplast-nucleus signaling, positive regulation of thermomorphogenesis, and chromatin organization. Studies of related genes in other species link the family to phytochrome A nuclear accumulation and import, far-red light signaling, flowering, thermotolerance, and pathogen defense.