CYR1 — triticum aestivum

Summary

TRAESCS5D02G184200 (TaCYR1, also known as TaVRN2-5D) on bread wheat chromosome 5D 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 the vegetative-to-reproductive phase transition. It is linked to yield traits, days to flowering, and wheat stripe rust disease response. Associations also include endosperm and seed development, embryo development, leaf and floral organ morphology, root system architecture, auxin and cytokinin content and sensitivity, and, via related genes in other species, grain number and size, spikelet number, salt response, and hypoxia tolerance. The protein localizes to Polycomb repressive complexes, euchromatin, and heterochromatin, and is connected to epigenetic gene silencing via H3K27me3.