CYR1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0472220 (HvCYR1) on barley chromosome 5H encodes a protein containing Znf_SUZ12, EMF2-like DUF7651 and VEFS-Box domains, with annotated histone H3K27 trimethylase activity and DNA-binding transcription factor activity. It is associated with photoperiodism, regulation of long-day flowering, cellular response to cold, epigenetic programming in the endosperm, seed coat development, and reproductive processes. The gene is linked to yield, days to flowering, photoperiod sensitivity, leaf and inflorescence morphology, endosperm morphology, vegetative-to-reproductive phase transition, and traits including leaf flexibility, sulfur content, oleic acid content, and aphid response. It localises to PcG and chromatin silencing complexes, euchromatin and heterochromatin. Studies of related genes in other species link the family to shoot development and plant architecture, and to floral meristem and pollen development.