CCR2 — Arabidopsis thaliana

Summary

AT2G21660 (CCR2, also known as AtGRP7) encodes an RRM domain-containing protein, annotated as an RNA folding chaperone with siRNA, miRNA and mRNA binding activities, as well as histone acetyltransferase activity. In Arabidopsis, CCR2 is associated with circadian rhythm regulation, alternative splicing, miRNA processing, and responses to abiotic stresses including freezing, heat, salt and osmotic stress. The gene is linked to seed germination, seedling growth, stem length, and flowering time, particularly the thermosensory flowering response. It has been connected to pathogen defence, including resistance to Botrytis cinerea and Pectobacterium carotovorum, and to immunity. Associations with grain yield, water use efficiency, polysaccharide and cellulose content, leaf and petiole length, and stomatal resistance have also been reported. Related genes in other species are linked to grain yield and drought tolerance in rice, and to disease resistance in tomato.