CYR1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.2HG0095480 (HvCYR1) on barley chromosome 2H encodes a protein containing Znf_SUZ12, EMF2-like_DUF7651 and VEFS-Box domains, with annotated GTP cyclohydrolase II activity, histone H3K27 trimethylase activity, and DNA-binding transcription factor activity. The gene is associated with photoperiodism, regulation of long-day flowering, and cellular response to cold. It is linked to reproductive processes including endosperm development, seed coat development, and epigenetic programming in the endosperm. Associations with leaf morphology, plant morphology, inflorescence development, and days to flowering have been observed. The gene is also connected to abscisic acid and cytokinin sensitivity, and chlorophyll accumulation. Studies of related genes in other species link the family to shoot development, floral meristem identity, and pathogen susceptibility.