CYR1 — Brachypodium distachyon

Summary

BRADI_4G11608V3 (CYR1) in Brachypodium distachyon encodes a Polycomb-group protein containing Znf_SUZ12, EMF2-like_DUF7651 and VEFS-Box domains, with annotated histone H3K27 trimethylase activity, GTP cyclohydrolase II activity, transcription corepressor binding, chromatin DNA binding, and DNA-binding transcription factor activity. This gene is associated with photoperiodism, regulation of long-day flowering, cellular response to cold, epigenetic programming in the endosperm, seed coat development, shoot morphogenesis, and reproductive processes. It localizes to PcG protein complexes, chromatin silencing complexes, euchromatin, and heterochromatin. CYR1 is linked to yield, days to flowering, leaf morphology, flower development, endosperm morphology, photoperiod sensitivity, vegetative to reproductive phase transition, and responses to aphids, ethylene, auxin, and cold. Studies of related genes in other species connect the family to grain number, grain weight, spikelet number, cold tolerance, and root architecture.